add sanitizers dependencies

75 files changed, 12196 insertions, 0 deletions

diff --git a/contrib/libs/clang14-rt/lib/scudo/.yandex_meta/licenses.list.txt b/contrib/libs/clang14-rt/lib/scudo/.yandex_meta/licenses.list.txt
new file mode 100644
index 0000000000..0dd5fc5a3c
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/.yandex_meta/licenses.list.txt
@@ -0,0 +1,377 @@
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+    InitCache(c);
+    TransferBatch *b = allocator->AllocateBatch(&stats_, this, class_id);
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+====================COPYRIGHT====================
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+    if (UNLIKELY(!B))
+
+
+====================COPYRIGHT====================
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+const char *getEnv(const char *Name) { return getenv(Name); }
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+
+
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+
+N: Craig van Vliet
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+D: Code style and Readability fixes.
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+N: Edward O'Callaghan
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+N: Matt Thomas
+E: matt@NetBSD.org
+D: ARM improvements.
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+
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diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_allocator.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_allocator.cpp
new file mode 100644
index 0000000000..6a6b577ab0
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_allocator.cpp
@@ -0,0 +1,831 @@
+//===-- scudo_allocator.cpp -------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo Hardened Allocator implementation.
+/// It uses the sanitizer_common allocator as a base and aims at mitigating
+/// heap corruption vulnerabilities. It provides a checksum-guarded chunk
+/// header, a delayed free list, and additional sanity checks.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_allocator.h"
+#include "scudo_crc32.h"
+#include "scudo_errors.h"
+#include "scudo_flags.h"
+#include "scudo_interface_internal.h"
+#include "scudo_tsd.h"
+#include "scudo_utils.h"
+
+#include "sanitizer_common/sanitizer_allocator_checks.h"
+#include "sanitizer_common/sanitizer_allocator_interface.h"
+#include "sanitizer_common/sanitizer_quarantine.h"
+
+#ifdef GWP_ASAN_HOOKS
+# include "gwp_asan/guarded_pool_allocator.h"
+# include "gwp_asan/optional/backtrace.h"
+# include "gwp_asan/optional/options_parser.h"
+#include "gwp_asan/optional/segv_handler.h"
+#endif // GWP_ASAN_HOOKS
+
+#include <errno.h>
+#include <string.h>
+
+namespace __scudo {
+
+// Global static cookie, initialized at start-up.
+static u32 Cookie;
+
+// We default to software CRC32 if the alternatives are not supported, either
+// at compilation or at runtime.
+static atomic_uint8_t HashAlgorithm = { CRC32Software };
+
+inline u32 computeCRC32(u32 Crc, uptr Value, uptr *Array, uptr ArraySize) {
+  // If the hardware CRC32 feature is defined here, it was enabled everywhere,
+  // as opposed to only for scudo_crc32.cpp. This means that other hardware
+  // specific instructions were likely emitted at other places, and as a
+  // result there is no reason to not use it here.
+#if defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+  Crc = CRC32_INTRINSIC(Crc, Value);
+  for (uptr i = 0; i < ArraySize; i++)
+    Crc = CRC32_INTRINSIC(Crc, Array[i]);
+  return Crc;
+#else
+  if (atomic_load_relaxed(&HashAlgorithm) == CRC32Hardware) {
+    Crc = computeHardwareCRC32(Crc, Value);
+    for (uptr i = 0; i < ArraySize; i++)
+      Crc = computeHardwareCRC32(Crc, Array[i]);
+    return Crc;
+  }
+  Crc = computeSoftwareCRC32(Crc, Value);
+  for (uptr i = 0; i < ArraySize; i++)
+    Crc = computeSoftwareCRC32(Crc, Array[i]);
+  return Crc;
+#endif  // defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+}
+
+static BackendT &getBackend();
+
+namespace Chunk {
+  static inline AtomicPackedHeader *getAtomicHeader(void *Ptr) {
+    return reinterpret_cast<AtomicPackedHeader *>(reinterpret_cast<uptr>(Ptr) -
+        getHeaderSize());
+  }
+  static inline
+  const AtomicPackedHeader *getConstAtomicHeader(const void *Ptr) {
+    return reinterpret_cast<const AtomicPackedHeader *>(
+        reinterpret_cast<uptr>(Ptr) - getHeaderSize());
+  }
+
+  static inline bool isAligned(const void *Ptr) {
+    return IsAligned(reinterpret_cast<uptr>(Ptr), MinAlignment);
+  }
+
+  // We can't use the offset member of the chunk itself, as we would double
+  // fetch it without any warranty that it wouldn't have been tampered. To
+  // prevent this, we work with a local copy of the header.
+  static inline void *getBackendPtr(const void *Ptr, UnpackedHeader *Header) {
+    return reinterpret_cast<void *>(reinterpret_cast<uptr>(Ptr) -
+        getHeaderSize() - (Header->Offset << MinAlignmentLog));
+  }
+
+  // Returns the usable size for a chunk, meaning the amount of bytes from the
+  // beginning of the user data to the end of the backend allocated chunk.
+  static inline uptr getUsableSize(const void *Ptr, UnpackedHeader *Header) {
+    const uptr ClassId = Header->ClassId;
+    if (ClassId)
+      return PrimaryT::ClassIdToSize(ClassId) - getHeaderSize() -
+          (Header->Offset << MinAlignmentLog);
+    return SecondaryT::GetActuallyAllocatedSize(
+        getBackendPtr(Ptr, Header)) - getHeaderSize();
+  }
+
+  // Returns the size the user requested when allocating the chunk.
+  static inline uptr getSize(const void *Ptr, UnpackedHeader *Header) {
+    const uptr SizeOrUnusedBytes = Header->SizeOrUnusedBytes;
+    if (Header->ClassId)
+      return SizeOrUnusedBytes;
+    return SecondaryT::GetActuallyAllocatedSize(
+        getBackendPtr(Ptr, Header)) - getHeaderSize() - SizeOrUnusedBytes;
+  }
+
+  // Compute the checksum of the chunk pointer and its header.
+  static inline u16 computeChecksum(const void *Ptr, UnpackedHeader *Header) {
+    UnpackedHeader ZeroChecksumHeader = *Header;
+    ZeroChecksumHeader.Checksum = 0;
+    uptr HeaderHolder[sizeof(UnpackedHeader) / sizeof(uptr)];
+    memcpy(&HeaderHolder, &ZeroChecksumHeader, sizeof(HeaderHolder));
+    const u32 Crc = computeCRC32(Cookie, reinterpret_cast<uptr>(Ptr),
+                                 HeaderHolder, ARRAY_SIZE(HeaderHolder));
+    return static_cast<u16>(Crc);
+  }
+
+  // Checks the validity of a chunk by verifying its checksum. It doesn't
+  // incur termination in the event of an invalid chunk.
+  static inline bool isValid(const void *Ptr) {
+    PackedHeader NewPackedHeader =
+        atomic_load_relaxed(getConstAtomicHeader(Ptr));
+    UnpackedHeader NewUnpackedHeader =
+        bit_cast<UnpackedHeader>(NewPackedHeader);
+    return (NewUnpackedHeader.Checksum ==
+            computeChecksum(Ptr, &NewUnpackedHeader));
+  }
+
+  // Ensure that ChunkAvailable is 0, so that if a 0 checksum is ever valid
+  // for a fully nulled out header, its state will be available anyway.
+  COMPILER_CHECK(ChunkAvailable == 0);
+
+  // Loads and unpacks the header, verifying the checksum in the process.
+  static inline
+  void loadHeader(const void *Ptr, UnpackedHeader *NewUnpackedHeader) {
+    PackedHeader NewPackedHeader =
+        atomic_load_relaxed(getConstAtomicHeader(Ptr));
+    *NewUnpackedHeader = bit_cast<UnpackedHeader>(NewPackedHeader);
+    if (UNLIKELY(NewUnpackedHeader->Checksum !=
+        computeChecksum(Ptr, NewUnpackedHeader)))
+      dieWithMessage("corrupted chunk header at address %p\n", Ptr);
+  }
+
+  // Packs and stores the header, computing the checksum in the process.
+  static inline void storeHeader(void *Ptr, UnpackedHeader *NewUnpackedHeader) {
+    NewUnpackedHeader->Checksum = computeChecksum(Ptr, NewUnpackedHeader);
+    PackedHeader NewPackedHeader = bit_cast<PackedHeader>(*NewUnpackedHeader);
+    atomic_store_relaxed(getAtomicHeader(Ptr), NewPackedHeader);
+  }
+
+  // Packs and stores the header, computing the checksum in the process. We
+  // compare the current header with the expected provided one to ensure that
+  // we are not being raced by a corruption occurring in another thread.
+  static inline void compareExchangeHeader(void *Ptr,
+                                           UnpackedHeader *NewUnpackedHeader,
+                                           UnpackedHeader *OldUnpackedHeader) {
+    NewUnpackedHeader->Checksum = computeChecksum(Ptr, NewUnpackedHeader);
+    PackedHeader NewPackedHeader = bit_cast<PackedHeader>(*NewUnpackedHeader);
+    PackedHeader OldPackedHeader = bit_cast<PackedHeader>(*OldUnpackedHeader);
+    if (UNLIKELY(!atomic_compare_exchange_strong(
+            getAtomicHeader(Ptr), &OldPackedHeader, NewPackedHeader,
+            memory_order_relaxed)))
+      dieWithMessage("race on chunk header at address %p\n", Ptr);
+  }
+}  // namespace Chunk
+
+struct QuarantineCallback {
+  explicit QuarantineCallback(AllocatorCacheT *Cache)
+    : Cache_(Cache) {}
+
+  // Chunk recycling function, returns a quarantined chunk to the backend,
+  // first making sure it hasn't been tampered with.
+  void Recycle(void *Ptr) {
+    UnpackedHeader Header;
+    Chunk::loadHeader(Ptr, &Header);
+    if (UNLIKELY(Header.State != ChunkQuarantine))
+      dieWithMessage("invalid chunk state when recycling address %p\n", Ptr);
+    UnpackedHeader NewHeader = Header;
+    NewHeader.State = ChunkAvailable;
+    Chunk::compareExchangeHeader(Ptr, &NewHeader, &Header);
+    void *BackendPtr = Chunk::getBackendPtr(Ptr, &Header);
+    if (Header.ClassId)
+      getBackend().deallocatePrimary(Cache_, BackendPtr, Header.ClassId);
+    else
+      getBackend().deallocateSecondary(BackendPtr);
+  }
+
+  // Internal quarantine allocation and deallocation functions. We first check
+  // that the batches are indeed serviced by the Primary.
+  // TODO(kostyak): figure out the best way to protect the batches.
+  void *Allocate(uptr Size) {
+    const uptr BatchClassId = SizeClassMap::ClassID(sizeof(QuarantineBatch));
+    return getBackend().allocatePrimary(Cache_, BatchClassId);
+  }
+
+  void Deallocate(void *Ptr) {
+    const uptr BatchClassId = SizeClassMap::ClassID(sizeof(QuarantineBatch));
+    getBackend().deallocatePrimary(Cache_, Ptr, BatchClassId);
+  }
+
+  AllocatorCacheT *Cache_;
+  COMPILER_CHECK(sizeof(QuarantineBatch) < SizeClassMap::kMaxSize);
+};
+
+typedef Quarantine<QuarantineCallback, void> QuarantineT;
+typedef QuarantineT::Cache QuarantineCacheT;
+COMPILER_CHECK(sizeof(QuarantineCacheT) <=
+               sizeof(ScudoTSD::QuarantineCachePlaceHolder));
+
+QuarantineCacheT *getQuarantineCache(ScudoTSD *TSD) {
+  return reinterpret_cast<QuarantineCacheT *>(TSD->QuarantineCachePlaceHolder);
+}
+
+#ifdef GWP_ASAN_HOOKS
+static gwp_asan::GuardedPoolAllocator GuardedAlloc;
+#endif // GWP_ASAN_HOOKS
+
+struct Allocator {
+  static const uptr MaxAllowedMallocSize =
+      FIRST_32_SECOND_64(2UL << 30, 1ULL << 40);
+
+  BackendT Backend;
+  QuarantineT Quarantine;
+
+  u32 QuarantineChunksUpToSize;
+
+  bool DeallocationTypeMismatch;
+  bool ZeroContents;
+  bool DeleteSizeMismatch;
+
+  bool CheckRssLimit;
+  uptr HardRssLimitMb;
+  uptr SoftRssLimitMb;
+  atomic_uint8_t RssLimitExceeded;
+  atomic_uint64_t RssLastCheckedAtNS;
+
+  explicit Allocator(LinkerInitialized)
+    : Quarantine(LINKER_INITIALIZED) {}
+
+  NOINLINE void performSanityChecks();
+
+  void init() {
+    SanitizerToolName = "Scudo";
+    PrimaryAllocatorName = "ScudoPrimary";
+    SecondaryAllocatorName = "ScudoSecondary";
+
+    initFlags();
+
+    performSanityChecks();
+
+    // Check if hardware CRC32 is supported in the binary and by the platform,
+    // if so, opt for the CRC32 hardware version of the checksum.
+    if (&computeHardwareCRC32 && hasHardwareCRC32())
+      atomic_store_relaxed(&HashAlgorithm, CRC32Hardware);
+
+    SetAllocatorMayReturnNull(common_flags()->allocator_may_return_null);
+    Backend.init(common_flags()->allocator_release_to_os_interval_ms);
+    HardRssLimitMb = common_flags()->hard_rss_limit_mb;
+    SoftRssLimitMb = common_flags()->soft_rss_limit_mb;
+    Quarantine.Init(
+        static_cast<uptr>(getFlags()->QuarantineSizeKb) << 10,
+        static_cast<uptr>(getFlags()->ThreadLocalQuarantineSizeKb) << 10);
+    QuarantineChunksUpToSize = (Quarantine.GetCacheSize() == 0) ? 0 :
+        getFlags()->QuarantineChunksUpToSize;
+    DeallocationTypeMismatch = getFlags()->DeallocationTypeMismatch;
+    DeleteSizeMismatch = getFlags()->DeleteSizeMismatch;
+    ZeroContents = getFlags()->ZeroContents;
+
+    if (UNLIKELY(!GetRandom(reinterpret_cast<void *>(&Cookie), sizeof(Cookie),
+                            /*blocking=*/false))) {
+      Cookie = static_cast<u32>((NanoTime() >> 12) ^
+                                (reinterpret_cast<uptr>(this) >> 4));
+    }
+
+    CheckRssLimit = HardRssLimitMb || SoftRssLimitMb;
+    if (CheckRssLimit)
+      atomic_store_relaxed(&RssLastCheckedAtNS, MonotonicNanoTime());
+  }
+
+  // Helper function that checks for a valid Scudo chunk. nullptr isn't.
+  bool isValidPointer(const void *Ptr) {
+    initThreadMaybe();
+    if (UNLIKELY(!Ptr))
+      return false;
+    if (!Chunk::isAligned(Ptr))
+      return false;
+    return Chunk::isValid(Ptr);
+  }
+
+  NOINLINE bool isRssLimitExceeded();
+
+  // Allocates a chunk.
+  void *
+  allocate(uptr Size, uptr Alignment, AllocType Type,
+           bool ForceZeroContents = false) SANITIZER_NO_THREAD_SAFETY_ANALYSIS {
+    initThreadMaybe();
+
+    if (UNLIKELY(Alignment > MaxAlignment)) {
+      if (AllocatorMayReturnNull())
+        return nullptr;
+      reportAllocationAlignmentTooBig(Alignment, MaxAlignment);
+    }
+    if (UNLIKELY(Alignment < MinAlignment))
+      Alignment = MinAlignment;
+
+#ifdef GWP_ASAN_HOOKS
+    if (UNLIKELY(GuardedAlloc.shouldSample())) {
+      if (void *Ptr = GuardedAlloc.allocate(Size, Alignment)) {
+        if (SCUDO_CAN_USE_HOOKS && &__sanitizer_malloc_hook)
+          __sanitizer_malloc_hook(Ptr, Size);
+        return Ptr;
+      }
+    }
+#endif // GWP_ASAN_HOOKS
+
+    const uptr NeededSize = RoundUpTo(Size ? Size : 1, MinAlignment) +
+        Chunk::getHeaderSize();
+    const uptr AlignedSize = (Alignment > MinAlignment) ?
+        NeededSize + (Alignment - Chunk::getHeaderSize()) : NeededSize;
+    if (UNLIKELY(Size >= MaxAllowedMallocSize) ||
+        UNLIKELY(AlignedSize >= MaxAllowedMallocSize)) {
+      if (AllocatorMayReturnNull())
+        return nullptr;
+      reportAllocationSizeTooBig(Size, AlignedSize, MaxAllowedMallocSize);
+    }
+
+    if (CheckRssLimit && UNLIKELY(isRssLimitExceeded())) {
+      if (AllocatorMayReturnNull())
+        return nullptr;
+      reportRssLimitExceeded();
+    }
+
+    // Primary and Secondary backed allocations have a different treatment. We
+    // deal with alignment requirements of Primary serviced allocations here,
+    // but the Secondary will take care of its own alignment needs.
+    void *BackendPtr;
+    uptr BackendSize;
+    u8 ClassId;
+    if (PrimaryT::CanAllocate(AlignedSize, MinAlignment)) {
+      BackendSize = AlignedSize;
+      ClassId = SizeClassMap::ClassID(BackendSize);
+      bool UnlockRequired;
+      ScudoTSD *TSD = getTSDAndLock(&UnlockRequired);
+      BackendPtr = Backend.allocatePrimary(&TSD->Cache, ClassId);
+      if (UnlockRequired)
+        TSD->unlock();
+    } else {
+      BackendSize = NeededSize;
+      ClassId = 0;
+      BackendPtr = Backend.allocateSecondary(BackendSize, Alignment);
+    }
+    if (UNLIKELY(!BackendPtr)) {
+      SetAllocatorOutOfMemory();
+      if (AllocatorMayReturnNull())
+        return nullptr;
+      reportOutOfMemory(Size);
+    }
+
+    // If requested, we will zero out the entire contents of the returned chunk.
+    if ((ForceZeroContents || ZeroContents) && ClassId)
+      memset(BackendPtr, 0, PrimaryT::ClassIdToSize(ClassId));
+
+    UnpackedHeader Header = {};
+    uptr UserPtr = reinterpret_cast<uptr>(BackendPtr) + Chunk::getHeaderSize();
+    if (UNLIKELY(!IsAligned(UserPtr, Alignment))) {
+      // Since the Secondary takes care of alignment, a non-aligned pointer
+      // means it is from the Primary. It is also the only case where the offset
+      // field of the header would be non-zero.
+      DCHECK(ClassId);
+      const uptr AlignedUserPtr = RoundUpTo(UserPtr, Alignment);
+      Header.Offset = (AlignedUserPtr - UserPtr) >> MinAlignmentLog;
+      UserPtr = AlignedUserPtr;
+    }
+    DCHECK_LE(UserPtr + Size, reinterpret_cast<uptr>(BackendPtr) + BackendSize);
+    Header.State = ChunkAllocated;
+    Header.AllocType = Type;
+    if (ClassId) {
+      Header.ClassId = ClassId;
+      Header.SizeOrUnusedBytes = Size;
+    } else {
+      // The secondary fits the allocations to a page, so the amount of unused
+      // bytes is the difference between the end of the user allocation and the
+      // next page boundary.
+      const uptr PageSize = GetPageSizeCached();
+      const uptr TrailingBytes = (UserPtr + Size) & (PageSize - 1);
+      if (TrailingBytes)
+        Header.SizeOrUnusedBytes = PageSize - TrailingBytes;
+    }
+    void *Ptr = reinterpret_cast<void *>(UserPtr);
+    Chunk::storeHeader(Ptr, &Header);
+    if (SCUDO_CAN_USE_HOOKS && &__sanitizer_malloc_hook)
+      __sanitizer_malloc_hook(Ptr, Size);
+    return Ptr;
+  }
+
+  // Place a chunk in the quarantine or directly deallocate it in the event of
+  // a zero-sized quarantine, or if the size of the chunk is greater than the
+  // quarantine chunk size threshold.
+  void quarantineOrDeallocateChunk(void *Ptr, UnpackedHeader *Header, uptr Size)
+      SANITIZER_NO_THREAD_SAFETY_ANALYSIS {
+    const bool BypassQuarantine = !Size || (Size > QuarantineChunksUpToSize);
+    if (BypassQuarantine) {
+      UnpackedHeader NewHeader = *Header;
+      NewHeader.State = ChunkAvailable;
+      Chunk::compareExchangeHeader(Ptr, &NewHeader, Header);
+      void *BackendPtr = Chunk::getBackendPtr(Ptr, Header);
+      if (Header->ClassId) {
+        bool UnlockRequired;
+        ScudoTSD *TSD = getTSDAndLock(&UnlockRequired);
+        getBackend().deallocatePrimary(&TSD->Cache, BackendPtr,
+                                       Header->ClassId);
+        if (UnlockRequired)
+          TSD->unlock();
+      } else {
+        getBackend().deallocateSecondary(BackendPtr);
+      }
+    } else {
+      // If a small memory amount was allocated with a larger alignment, we want
+      // to take that into account. Otherwise the Quarantine would be filled
+      // with tiny chunks, taking a lot of VA memory. This is an approximation
+      // of the usable size, that allows us to not call
+      // GetActuallyAllocatedSize.
+      const uptr EstimatedSize = Size + (Header->Offset << MinAlignmentLog);
+      UnpackedHeader NewHeader = *Header;
+      NewHeader.State = ChunkQuarantine;
+      Chunk::compareExchangeHeader(Ptr, &NewHeader, Header);
+      bool UnlockRequired;
+      ScudoTSD *TSD = getTSDAndLock(&UnlockRequired);
+      Quarantine.Put(getQuarantineCache(TSD), QuarantineCallback(&TSD->Cache),
+                     Ptr, EstimatedSize);
+      if (UnlockRequired)
+        TSD->unlock();
+    }
+  }
+
+  // Deallocates a Chunk, which means either adding it to the quarantine or
+  // directly returning it to the backend if criteria are met.
+  void deallocate(void *Ptr, uptr DeleteSize, uptr DeleteAlignment,
+                  AllocType Type) {
+    // For a deallocation, we only ensure minimal initialization, meaning thread
+    // local data will be left uninitialized for now (when using ELF TLS). The
+    // fallback cache will be used instead. This is a workaround for a situation
+    // where the only heap operation performed in a thread would be a free past
+    // the TLS destructors, ending up in initialized thread specific data never
+    // being destroyed properly. Any other heap operation will do a full init.
+    initThreadMaybe(/*MinimalInit=*/true);
+    if (SCUDO_CAN_USE_HOOKS && &__sanitizer_free_hook)
+      __sanitizer_free_hook(Ptr);
+    if (UNLIKELY(!Ptr))
+      return;
+
+#ifdef GWP_ASAN_HOOKS
+    if (UNLIKELY(GuardedAlloc.pointerIsMine(Ptr))) {
+      GuardedAlloc.deallocate(Ptr);
+      return;
+    }
+#endif // GWP_ASAN_HOOKS
+
+    if (UNLIKELY(!Chunk::isAligned(Ptr)))
+      dieWithMessage("misaligned pointer when deallocating address %p\n", Ptr);
+    UnpackedHeader Header;
+    Chunk::loadHeader(Ptr, &Header);
+    if (UNLIKELY(Header.State != ChunkAllocated))
+      dieWithMessage("invalid chunk state when deallocating address %p\n", Ptr);
+    if (DeallocationTypeMismatch) {
+      // The deallocation type has to match the allocation one.
+      if (Header.AllocType != Type) {
+        // With the exception of memalign'd Chunks, that can be still be free'd.
+        if (Header.AllocType != FromMemalign || Type != FromMalloc)
+          dieWithMessage("allocation type mismatch when deallocating address "
+                         "%p\n", Ptr);
+      }
+    }
+    const uptr Size = Chunk::getSize(Ptr, &Header);
+    if (DeleteSizeMismatch) {
+      if (DeleteSize && DeleteSize != Size)
+        dieWithMessage("invalid sized delete when deallocating address %p\n",
+                       Ptr);
+    }
+    (void)DeleteAlignment;  // TODO(kostyak): verify that the alignment matches.
+    quarantineOrDeallocateChunk(Ptr, &Header, Size);
+  }
+
+  // Reallocates a chunk. We can save on a new allocation if the new requested
+  // size still fits in the chunk.
+  void *reallocate(void *OldPtr, uptr NewSize) {
+    initThreadMaybe();
+
+#ifdef GWP_ASAN_HOOKS
+    if (UNLIKELY(GuardedAlloc.pointerIsMine(OldPtr))) {
+      size_t OldSize = GuardedAlloc.getSize(OldPtr);
+      void *NewPtr = allocate(NewSize, MinAlignment, FromMalloc);
+      if (NewPtr)
+        memcpy(NewPtr, OldPtr, (NewSize < OldSize) ? NewSize : OldSize);
+      GuardedAlloc.deallocate(OldPtr);
+      return NewPtr;
+    }
+#endif // GWP_ASAN_HOOKS
+
+    if (UNLIKELY(!Chunk::isAligned(OldPtr)))
+      dieWithMessage("misaligned address when reallocating address %p\n",
+                     OldPtr);
+    UnpackedHeader OldHeader;
+    Chunk::loadHeader(OldPtr, &OldHeader);
+    if (UNLIKELY(OldHeader.State != ChunkAllocated))
+      dieWithMessage("invalid chunk state when reallocating address %p\n",
+                     OldPtr);
+    if (DeallocationTypeMismatch) {
+      if (UNLIKELY(OldHeader.AllocType != FromMalloc))
+        dieWithMessage("allocation type mismatch when reallocating address "
+                       "%p\n", OldPtr);
+    }
+    const uptr UsableSize = Chunk::getUsableSize(OldPtr, &OldHeader);
+    // The new size still fits in the current chunk, and the size difference
+    // is reasonable.
+    if (NewSize <= UsableSize &&
+        (UsableSize - NewSize) < (SizeClassMap::kMaxSize / 2)) {
+      UnpackedHeader NewHeader = OldHeader;
+      NewHeader.SizeOrUnusedBytes =
+          OldHeader.ClassId ? NewSize : UsableSize - NewSize;
+      Chunk::compareExchangeHeader(OldPtr, &NewHeader, &OldHeader);
+      return OldPtr;
+    }
+    // Otherwise, we have to allocate a new chunk and copy the contents of the
+    // old one.
+    void *NewPtr = allocate(NewSize, MinAlignment, FromMalloc);
+    if (NewPtr) {
+      const uptr OldSize = OldHeader.ClassId ? OldHeader.SizeOrUnusedBytes :
+          UsableSize - OldHeader.SizeOrUnusedBytes;
+      memcpy(NewPtr, OldPtr, Min(NewSize, UsableSize));
+      quarantineOrDeallocateChunk(OldPtr, &OldHeader, OldSize);
+    }
+    return NewPtr;
+  }
+
+  // Helper function that returns the actual usable size of a chunk.
+  uptr getUsableSize(const void *Ptr) {
+    initThreadMaybe();
+    if (UNLIKELY(!Ptr))
+      return 0;
+
+#ifdef GWP_ASAN_HOOKS
+    if (UNLIKELY(GuardedAlloc.pointerIsMine(Ptr)))
+      return GuardedAlloc.getSize(Ptr);
+#endif // GWP_ASAN_HOOKS
+
+    UnpackedHeader Header;
+    Chunk::loadHeader(Ptr, &Header);
+    // Getting the usable size of a chunk only makes sense if it's allocated.
+    if (UNLIKELY(Header.State != ChunkAllocated))
+      dieWithMessage("invalid chunk state when sizing address %p\n", Ptr);
+    return Chunk::getUsableSize(Ptr, &Header);
+  }
+
+  void *calloc(uptr NMemB, uptr Size) {
+    initThreadMaybe();
+    if (UNLIKELY(CheckForCallocOverflow(NMemB, Size))) {
+      if (AllocatorMayReturnNull())
+        return nullptr;
+      reportCallocOverflow(NMemB, Size);
+    }
+    return allocate(NMemB * Size, MinAlignment, FromMalloc, true);
+  }
+
+  void commitBack(ScudoTSD *TSD) {
+    Quarantine.Drain(getQuarantineCache(TSD), QuarantineCallback(&TSD->Cache));
+    Backend.destroyCache(&TSD->Cache);
+  }
+
+  uptr getStats(AllocatorStat StatType) {
+    initThreadMaybe();
+    uptr stats[AllocatorStatCount];
+    Backend.getStats(stats);
+    return stats[StatType];
+  }
+
+  bool canReturnNull() {
+    initThreadMaybe();
+    return AllocatorMayReturnNull();
+  }
+
+  void setRssLimit(uptr LimitMb, bool HardLimit) {
+    if (HardLimit)
+      HardRssLimitMb = LimitMb;
+    else
+      SoftRssLimitMb = LimitMb;
+    CheckRssLimit = HardRssLimitMb || SoftRssLimitMb;
+  }
+
+  void printStats() {
+    initThreadMaybe();
+    Backend.printStats();
+  }
+};
+
+NOINLINE void Allocator::performSanityChecks() {
+  // Verify that the header offset field can hold the maximum offset. In the
+  // case of the Secondary allocator, it takes care of alignment and the
+  // offset will always be 0. In the case of the Primary, the worst case
+  // scenario happens in the last size class, when the backend allocation
+  // would already be aligned on the requested alignment, which would happen
+  // to be the maximum alignment that would fit in that size class. As a
+  // result, the maximum offset will be at most the maximum alignment for the
+  // last size class minus the header size, in multiples of MinAlignment.
+  UnpackedHeader Header = {};
+  const uptr MaxPrimaryAlignment =
+      1 << MostSignificantSetBitIndex(SizeClassMap::kMaxSize - MinAlignment);
+  const uptr MaxOffset =
+      (MaxPrimaryAlignment - Chunk::getHeaderSize()) >> MinAlignmentLog;
+  Header.Offset = MaxOffset;
+  if (Header.Offset != MaxOffset)
+    dieWithMessage("maximum possible offset doesn't fit in header\n");
+  // Verify that we can fit the maximum size or amount of unused bytes in the
+  // header. Given that the Secondary fits the allocation to a page, the worst
+  // case scenario happens in the Primary. It will depend on the second to
+  // last and last class sizes, as well as the dynamic base for the Primary.
+  // The following is an over-approximation that works for our needs.
+  const uptr MaxSizeOrUnusedBytes = SizeClassMap::kMaxSize - 1;
+  Header.SizeOrUnusedBytes = MaxSizeOrUnusedBytes;
+  if (Header.SizeOrUnusedBytes != MaxSizeOrUnusedBytes)
+    dieWithMessage("maximum possible unused bytes doesn't fit in header\n");
+
+  const uptr LargestClassId = SizeClassMap::kLargestClassID;
+  Header.ClassId = LargestClassId;
+  if (Header.ClassId != LargestClassId)
+    dieWithMessage("largest class ID doesn't fit in header\n");
+}
+
+// Opportunistic RSS limit check. This will update the RSS limit status, if
+// it can, every 250ms, otherwise it will just return the current one.
+NOINLINE bool Allocator::isRssLimitExceeded() {
+  u64 LastCheck = atomic_load_relaxed(&RssLastCheckedAtNS);
+  const u64 CurrentCheck = MonotonicNanoTime();
+  if (LIKELY(CurrentCheck < LastCheck + (250ULL * 1000000ULL)))
+    return atomic_load_relaxed(&RssLimitExceeded);
+  if (!atomic_compare_exchange_weak(&RssLastCheckedAtNS, &LastCheck,
+                                    CurrentCheck, memory_order_relaxed))
+    return atomic_load_relaxed(&RssLimitExceeded);
+  // TODO(kostyak): We currently use sanitizer_common's GetRSS which reads the
+  //                RSS from /proc/self/statm by default. We might want to
+  //                call getrusage directly, even if it's less accurate.
+  const uptr CurrentRssMb = GetRSS() >> 20;
+  if (HardRssLimitMb && UNLIKELY(HardRssLimitMb < CurrentRssMb))
+    dieWithMessage("hard RSS limit exhausted (%zdMb vs %zdMb)\n",
+                   HardRssLimitMb, CurrentRssMb);
+  if (SoftRssLimitMb) {
+    if (atomic_load_relaxed(&RssLimitExceeded)) {
+      if (CurrentRssMb <= SoftRssLimitMb)
+        atomic_store_relaxed(&RssLimitExceeded, false);
+    } else {
+      if (CurrentRssMb > SoftRssLimitMb) {
+        atomic_store_relaxed(&RssLimitExceeded, true);
+        Printf("Scudo INFO: soft RSS limit exhausted (%zdMb vs %zdMb)\n",
+               SoftRssLimitMb, CurrentRssMb);
+      }
+    }
+  }
+  return atomic_load_relaxed(&RssLimitExceeded);
+}
+
+static Allocator Instance(LINKER_INITIALIZED);
+
+static BackendT &getBackend() {
+  return Instance.Backend;
+}
+
+void initScudo() {
+  Instance.init();
+#ifdef GWP_ASAN_HOOKS
+  gwp_asan::options::initOptions(__sanitizer::GetEnv("GWP_ASAN_OPTIONS"),
+                                 Printf);
+  gwp_asan::options::Options &Opts = gwp_asan::options::getOptions();
+  Opts.Backtrace = gwp_asan::backtrace::getBacktraceFunction();
+  GuardedAlloc.init(Opts);
+
+  if (Opts.InstallSignalHandlers)
+    gwp_asan::segv_handler::installSignalHandlers(
+        &GuardedAlloc, __sanitizer::Printf,
+        gwp_asan::backtrace::getPrintBacktraceFunction(),
+        gwp_asan::backtrace::getSegvBacktraceFunction());
+#endif // GWP_ASAN_HOOKS
+}
+
+void ScudoTSD::init() {
+  getBackend().initCache(&Cache);
+  memset(QuarantineCachePlaceHolder, 0, sizeof(QuarantineCachePlaceHolder));
+}
+
+void ScudoTSD::commitBack() {
+  Instance.commitBack(this);
+}
+
+void *scudoAllocate(uptr Size, uptr Alignment, AllocType Type) {
+  if (Alignment && UNLIKELY(!IsPowerOfTwo(Alignment))) {
+    errno = EINVAL;
+    if (Instance.canReturnNull())
+      return nullptr;
+    reportAllocationAlignmentNotPowerOfTwo(Alignment);
+  }
+  return SetErrnoOnNull(Instance.allocate(Size, Alignment, Type));
+}
+
+void scudoDeallocate(void *Ptr, uptr Size, uptr Alignment, AllocType Type) {
+  Instance.deallocate(Ptr, Size, Alignment, Type);
+}
+
+void *scudoRealloc(void *Ptr, uptr Size) {
+  if (!Ptr)
+    return SetErrnoOnNull(Instance.allocate(Size, MinAlignment, FromMalloc));
+  if (Size == 0) {
+    Instance.deallocate(Ptr, 0, 0, FromMalloc);
+    return nullptr;
+  }
+  return SetErrnoOnNull(Instance.reallocate(Ptr, Size));
+}
+
+void *scudoCalloc(uptr NMemB, uptr Size) {
+  return SetErrnoOnNull(Instance.calloc(NMemB, Size));
+}
+
+void *scudoValloc(uptr Size) {
+  return SetErrnoOnNull(
+      Instance.allocate(Size, GetPageSizeCached(), FromMemalign));
+}
+
+void *scudoPvalloc(uptr Size) {
+  const uptr PageSize = GetPageSizeCached();
+  if (UNLIKELY(CheckForPvallocOverflow(Size, PageSize))) {
+    errno = ENOMEM;
+    if (Instance.canReturnNull())
+      return nullptr;
+    reportPvallocOverflow(Size);
+  }
+  // pvalloc(0) should allocate one page.
+  Size = Size ? RoundUpTo(Size, PageSize) : PageSize;
+  return SetErrnoOnNull(Instance.allocate(Size, PageSize, FromMemalign));
+}
+
+int scudoPosixMemalign(void **MemPtr, uptr Alignment, uptr Size) {
+  if (UNLIKELY(!CheckPosixMemalignAlignment(Alignment))) {
+    if (!Instance.canReturnNull())
+      reportInvalidPosixMemalignAlignment(Alignment);
+    return EINVAL;
+  }
+  void *Ptr = Instance.allocate(Size, Alignment, FromMemalign);
+  if (UNLIKELY(!Ptr))
+    return ENOMEM;
+  *MemPtr = Ptr;
+  return 0;
+}
+
+void *scudoAlignedAlloc(uptr Alignment, uptr Size) {
+  if (UNLIKELY(!CheckAlignedAllocAlignmentAndSize(Alignment, Size))) {
+    errno = EINVAL;
+    if (Instance.canReturnNull())
+      return nullptr;
+    reportInvalidAlignedAllocAlignment(Size, Alignment);
+  }
+  return SetErrnoOnNull(Instance.allocate(Size, Alignment, FromMalloc));
+}
+
+uptr scudoMallocUsableSize(void *Ptr) {
+  return Instance.getUsableSize(Ptr);
+}
+
+}  // namespace __scudo
+
+using namespace __scudo;
+
+// MallocExtension helper functions
+
+uptr __sanitizer_get_current_allocated_bytes() {
+  return Instance.getStats(AllocatorStatAllocated);
+}
+
+uptr __sanitizer_get_heap_size() {
+  return Instance.getStats(AllocatorStatMapped);
+}
+
+uptr __sanitizer_get_free_bytes() {
+  return 1;
+}
+
+uptr __sanitizer_get_unmapped_bytes() {
+  return 1;
+}
+
+uptr __sanitizer_get_estimated_allocated_size(uptr Size) {
+  return Size;
+}
+
+int __sanitizer_get_ownership(const void *Ptr) {
+  return Instance.isValidPointer(Ptr);
+}
+
+uptr __sanitizer_get_allocated_size(const void *Ptr) {
+  return Instance.getUsableSize(Ptr);
+}
+
+#if !SANITIZER_SUPPORTS_WEAK_HOOKS
+SANITIZER_INTERFACE_WEAK_DEF(void, __sanitizer_malloc_hook,
+                             void *Ptr, uptr Size) {
+  (void)Ptr;
+  (void)Size;
+}
+
+SANITIZER_INTERFACE_WEAK_DEF(void, __sanitizer_free_hook, void *Ptr) {
+  (void)Ptr;
+}
+#endif
+
+// Interface functions
+
+void __scudo_set_rss_limit(uptr LimitMb, s32 HardLimit) {
+  if (!SCUDO_CAN_USE_PUBLIC_INTERFACE)
+    return;
+  Instance.setRssLimit(LimitMb, !!HardLimit);
+}
+
+void __scudo_print_stats() {
+  Instance.printStats();
+}
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_allocator.h b/contrib/libs/clang14-rt/lib/scudo/scudo_allocator.h
new file mode 100644
index 0000000000..0efa5c5202
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_allocator.h
@@ -0,0 +1,125 @@
+//===-- scudo_allocator.h ---------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Header for scudo_allocator.cpp.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_ALLOCATOR_H_
+#define SCUDO_ALLOCATOR_H_
+
+#include "scudo_platform.h"
+
+namespace __scudo {
+
+enum AllocType : u8 {
+  FromMalloc    = 0,  // Memory block came from malloc, realloc, calloc, etc.
+  FromNew       = 1,  // Memory block came from operator new.
+  FromNewArray  = 2,  // Memory block came from operator new [].
+  FromMemalign  = 3,  // Memory block came from memalign, posix_memalign, etc.
+};
+
+enum ChunkState : u8 {
+  ChunkAvailable  = 0,
+  ChunkAllocated  = 1,
+  ChunkQuarantine = 2
+};
+
+// Our header requires 64 bits of storage. Having the offset saves us from
+// using functions such as GetBlockBegin, that is fairly costly. Our first
+// implementation used the MetaData as well, which offers the advantage of
+// being stored away from the chunk itself, but accessing it was costly as
+// well. The header will be atomically loaded and stored.
+typedef u64 PackedHeader;
+struct UnpackedHeader {
+  u64 Checksum          : 16;
+  u64 ClassId           : 8;
+  u64 SizeOrUnusedBytes : 20;  // Size for Primary backed allocations, amount of
+                               // unused bytes in the chunk for Secondary ones.
+  u64 State             : 2;   // available, allocated, or quarantined
+  u64 AllocType         : 2;   // malloc, new, new[], or memalign
+  u64 Offset            : 16;  // Offset from the beginning of the backend
+                               // allocation to the beginning of the chunk
+                               // itself, in multiples of MinAlignment. See
+                               // comment about its maximum value and in init().
+};
+
+typedef atomic_uint64_t AtomicPackedHeader;
+COMPILER_CHECK(sizeof(UnpackedHeader) == sizeof(PackedHeader));
+
+// Minimum alignment of 8 bytes for 32-bit, 16 for 64-bit
+const uptr MinAlignmentLog = FIRST_32_SECOND_64(3, 4);
+const uptr MaxAlignmentLog = 24;  // 16 MB
+const uptr MinAlignment = 1 << MinAlignmentLog;
+const uptr MaxAlignment = 1 << MaxAlignmentLog;
+
+// constexpr version of __sanitizer::RoundUp without the extraneous CHECK.
+// This way we can use it in constexpr variables and functions declarations.
+constexpr uptr RoundUpTo(uptr Size, uptr Boundary) {
+  return (Size + Boundary - 1) & ~(Boundary - 1);
+}
+
+namespace Chunk {
+  constexpr uptr getHeaderSize() {
+    return RoundUpTo(sizeof(PackedHeader), MinAlignment);
+  }
+}
+
+#if SANITIZER_CAN_USE_ALLOCATOR64
+const uptr AllocatorSpace = ~0ULL;
+struct AP64 {
+  static const uptr kSpaceBeg = AllocatorSpace;
+  static const uptr kSpaceSize = AllocatorSize;
+  static const uptr kMetadataSize = 0;
+  typedef __scudo::SizeClassMap SizeClassMap;
+  typedef NoOpMapUnmapCallback MapUnmapCallback;
+  static const uptr kFlags =
+      SizeClassAllocator64FlagMasks::kRandomShuffleChunks;
+  using AddressSpaceView = LocalAddressSpaceView;
+};
+typedef SizeClassAllocator64<AP64> PrimaryT;
+#else
+struct AP32 {
+  static const uptr kSpaceBeg = 0;
+  static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE;
+  static const uptr kMetadataSize = 0;
+  typedef __scudo::SizeClassMap SizeClassMap;
+  static const uptr kRegionSizeLog = RegionSizeLog;
+  using AddressSpaceView = LocalAddressSpaceView;
+  typedef NoOpMapUnmapCallback MapUnmapCallback;
+  static const uptr kFlags =
+      SizeClassAllocator32FlagMasks::kRandomShuffleChunks |
+      SizeClassAllocator32FlagMasks::kUseSeparateSizeClassForBatch;
+};
+typedef SizeClassAllocator32<AP32> PrimaryT;
+#endif  // SANITIZER_CAN_USE_ALLOCATOR64
+
+#include "scudo_allocator_secondary.h"
+
+typedef LargeMmapAllocator SecondaryT;
+
+#include "scudo_allocator_combined.h"
+
+typedef CombinedAllocator BackendT;
+typedef CombinedAllocator::AllocatorCache AllocatorCacheT;
+
+void initScudo();
+
+void *scudoAllocate(uptr Size, uptr Alignment, AllocType Type);
+void scudoDeallocate(void *Ptr, uptr Size, uptr Alignment, AllocType Type);
+void *scudoRealloc(void *Ptr, uptr Size);
+void *scudoCalloc(uptr NMemB, uptr Size);
+void *scudoValloc(uptr Size);
+void *scudoPvalloc(uptr Size);
+int scudoPosixMemalign(void **MemPtr, uptr Alignment, uptr Size);
+void *scudoAlignedAlloc(uptr Alignment, uptr Size);
+uptr scudoMallocUsableSize(void *Ptr);
+
+}  // namespace __scudo
+
+#endif  // SCUDO_ALLOCATOR_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_allocator_combined.h b/contrib/libs/clang14-rt/lib/scudo/scudo_allocator_combined.h
new file mode 100644
index 0000000000..d61cc9ec1a
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_allocator_combined.h
@@ -0,0 +1,75 @@
+//===-- scudo_allocator_combined.h ------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo Combined Allocator, dispatches allocation & deallocation requests to
+/// the Primary or the Secondary backend allocators.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_ALLOCATOR_COMBINED_H_
+#define SCUDO_ALLOCATOR_COMBINED_H_
+
+#ifndef SCUDO_ALLOCATOR_H_
+# error "This file must be included inside scudo_allocator.h."
+#endif
+
+class CombinedAllocator {
+ public:
+  using PrimaryAllocator = PrimaryT;
+  using SecondaryAllocator = SecondaryT;
+  using AllocatorCache = typename PrimaryAllocator::AllocatorCache;
+  void init(s32 ReleaseToOSIntervalMs) {
+    Primary.Init(ReleaseToOSIntervalMs);
+    Secondary.Init();
+    Stats.Init();
+  }
+
+  // Primary allocations are always MinAlignment aligned, and as such do not
+  // require an Alignment parameter.
+  void *allocatePrimary(AllocatorCache *Cache, uptr ClassId) {
+    return Cache->Allocate(&Primary, ClassId);
+  }
+
+  // Secondary allocations do not require a Cache, but do require an Alignment
+  // parameter.
+  void *allocateSecondary(uptr Size, uptr Alignment) {
+    return Secondary.Allocate(&Stats, Size, Alignment);
+  }
+
+  void deallocatePrimary(AllocatorCache *Cache, void *Ptr, uptr ClassId) {
+    Cache->Deallocate(&Primary, ClassId, Ptr);
+  }
+
+  void deallocateSecondary(void *Ptr) {
+    Secondary.Deallocate(&Stats, Ptr);
+  }
+
+  void initCache(AllocatorCache *Cache) {
+    Cache->Init(&Stats);
+  }
+
+  void destroyCache(AllocatorCache *Cache) {
+    Cache->Destroy(&Primary, &Stats);
+  }
+
+  void getStats(AllocatorStatCounters StatType) const {
+    Stats.Get(StatType);
+  }
+
+  void printStats() {
+    Primary.PrintStats();
+    Secondary.PrintStats();
+  }
+
+ private:
+  PrimaryAllocator Primary;
+  SecondaryAllocator Secondary;
+  AllocatorGlobalStats Stats;
+};
+
+#endif  // SCUDO_ALLOCATOR_COMBINED_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_allocator_secondary.h b/contrib/libs/clang14-rt/lib/scudo/scudo_allocator_secondary.h
new file mode 100644
index 0000000000..80198c4aeb
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_allocator_secondary.h
@@ -0,0 +1,192 @@
+//===-- scudo_allocator_secondary.h -----------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo Secondary Allocator.
+/// This services allocation that are too large to be serviced by the Primary
+/// Allocator. It is directly backed by the memory mapping functions of the
+/// operating system.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_ALLOCATOR_SECONDARY_H_
+#define SCUDO_ALLOCATOR_SECONDARY_H_
+
+#ifndef SCUDO_ALLOCATOR_H_
+# error "This file must be included inside scudo_allocator.h."
+#endif
+
+// Secondary backed allocations are standalone chunks that contain extra
+// information stored in a LargeChunk::Header prior to the frontend's header.
+//
+// The secondary takes care of alignment requirements (so that it can release
+// unnecessary pages in the rare event of larger alignments), and as such must
+// know about the frontend's header size.
+//
+// Since Windows doesn't support partial releasing of a reserved memory region,
+// we have to keep track of both the reserved and the committed memory.
+//
+// The resulting chunk resembles the following:
+//
+//   +--------------------+
+//   | Guard page(s)      |
+//   +--------------------+
+//   | Unused space*      |
+//   +--------------------+
+//   | LargeChunk::Header |
+//   +--------------------+
+//   | {Unp,P}ackedHeader |
+//   +--------------------+
+//   | Data (aligned)     |
+//   +--------------------+
+//   | Unused space**     |
+//   +--------------------+
+//   | Guard page(s)      |
+//   +--------------------+
+
+namespace LargeChunk {
+struct Header {
+  ReservedAddressRange StoredRange;
+  uptr CommittedSize;
+  uptr Size;
+};
+constexpr uptr getHeaderSize() {
+  return RoundUpTo(sizeof(Header), MinAlignment);
+}
+static Header *getHeader(uptr Ptr) {
+  return reinterpret_cast<Header *>(Ptr - getHeaderSize());
+}
+static Header *getHeader(const void *Ptr) {
+  return getHeader(reinterpret_cast<uptr>(Ptr));
+}
+}  // namespace LargeChunk
+
+class LargeMmapAllocator {
+ public:
+  void Init() {
+    internal_memset(this, 0, sizeof(*this));
+  }
+
+  void *Allocate(AllocatorStats *Stats, uptr Size, uptr Alignment) {
+    const uptr UserSize = Size - Chunk::getHeaderSize();
+    // The Scudo frontend prevents us from allocating more than
+    // MaxAllowedMallocSize, so integer overflow checks would be superfluous.
+    uptr ReservedSize = Size + LargeChunk::getHeaderSize();
+    if (UNLIKELY(Alignment > MinAlignment))
+      ReservedSize += Alignment;
+    const uptr PageSize = GetPageSizeCached();
+    ReservedSize = RoundUpTo(ReservedSize, PageSize);
+    // Account for 2 guard pages, one before and one after the chunk.
+    ReservedSize += 2 * PageSize;
+
+    ReservedAddressRange AddressRange;
+    uptr ReservedBeg = AddressRange.Init(ReservedSize, SecondaryAllocatorName);
+    if (UNLIKELY(ReservedBeg == ~static_cast<uptr>(0)))
+      return nullptr;
+    // A page-aligned pointer is assumed after that, so check it now.
+    DCHECK(IsAligned(ReservedBeg, PageSize));
+    uptr ReservedEnd = ReservedBeg + ReservedSize;
+    // The beginning of the user area for that allocation comes after the
+    // initial guard page, and both headers. This is the pointer that has to
+    // abide by alignment requirements.
+    uptr CommittedBeg = ReservedBeg + PageSize;
+    uptr UserBeg = CommittedBeg + HeadersSize;
+    uptr UserEnd = UserBeg + UserSize;
+    uptr CommittedEnd = RoundUpTo(UserEnd, PageSize);
+
+    // In the rare event of larger alignments, we will attempt to fit the mmap
+    // area better and unmap extraneous memory. This will also ensure that the
+    // offset and unused bytes field of the header stay small.
+    if (UNLIKELY(Alignment > MinAlignment)) {
+      if (!IsAligned(UserBeg, Alignment)) {
+        UserBeg = RoundUpTo(UserBeg, Alignment);
+        CommittedBeg = RoundDownTo(UserBeg - HeadersSize, PageSize);
+        const uptr NewReservedBeg = CommittedBeg - PageSize;
+        DCHECK_GE(NewReservedBeg, ReservedBeg);
+        if (!SANITIZER_WINDOWS && NewReservedBeg != ReservedBeg) {
+          AddressRange.Unmap(ReservedBeg, NewReservedBeg - ReservedBeg);
+          ReservedBeg = NewReservedBeg;
+        }
+        UserEnd = UserBeg + UserSize;
+        CommittedEnd = RoundUpTo(UserEnd, PageSize);
+      }
+      const uptr NewReservedEnd = CommittedEnd + PageSize;
+      DCHECK_LE(NewReservedEnd, ReservedEnd);
+      if (!SANITIZER_WINDOWS && NewReservedEnd != ReservedEnd) {
+        AddressRange.Unmap(NewReservedEnd, ReservedEnd - NewReservedEnd);
+        ReservedEnd = NewReservedEnd;
+      }
+    }
+
+    DCHECK_LE(UserEnd, CommittedEnd);
+    const uptr CommittedSize = CommittedEnd - CommittedBeg;
+    // Actually mmap the memory, preserving the guard pages on either sides.
+    CHECK_EQ(CommittedBeg, AddressRange.Map(CommittedBeg, CommittedSize));
+    const uptr Ptr = UserBeg - Chunk::getHeaderSize();
+    LargeChunk::Header *H = LargeChunk::getHeader(Ptr);
+    H->StoredRange = AddressRange;
+    H->Size = CommittedEnd - Ptr;
+    H->CommittedSize = CommittedSize;
+
+    // The primary adds the whole class size to the stats when allocating a
+    // chunk, so we will do something similar here. But we will not account for
+    // the guard pages.
+    {
+      SpinMutexLock l(&StatsMutex);
+      Stats->Add(AllocatorStatAllocated, CommittedSize);
+      Stats->Add(AllocatorStatMapped, CommittedSize);
+      AllocatedBytes += CommittedSize;
+      if (LargestSize < CommittedSize)
+        LargestSize = CommittedSize;
+      NumberOfAllocs++;
+    }
+
+    return reinterpret_cast<void *>(Ptr);
+  }
+
+  void Deallocate(AllocatorStats *Stats, void *Ptr) {
+    LargeChunk::Header *H = LargeChunk::getHeader(Ptr);
+    // Since we're unmapping the entirety of where the ReservedAddressRange
+    // actually is, copy onto the stack.
+    ReservedAddressRange AddressRange = H->StoredRange;
+    const uptr Size = H->CommittedSize;
+    {
+      SpinMutexLock l(&StatsMutex);
+      Stats->Sub(AllocatorStatAllocated, Size);
+      Stats->Sub(AllocatorStatMapped, Size);
+      FreedBytes += Size;
+      NumberOfFrees++;
+    }
+    AddressRange.Unmap(reinterpret_cast<uptr>(AddressRange.base()),
+                       AddressRange.size());
+  }
+
+  static uptr GetActuallyAllocatedSize(void *Ptr) {
+    return LargeChunk::getHeader(Ptr)->Size;
+  }
+
+  void PrintStats() {
+    Printf("Stats: LargeMmapAllocator: allocated %zd times (%zd K), "
+           "freed %zd times (%zd K), remains %zd (%zd K) max %zd M\n",
+           NumberOfAllocs, AllocatedBytes >> 10, NumberOfFrees,
+           FreedBytes >> 10, NumberOfAllocs - NumberOfFrees,
+           (AllocatedBytes - FreedBytes) >> 10, LargestSize >> 20);
+  }
+
+ private:
+  static constexpr uptr HeadersSize =
+      LargeChunk::getHeaderSize() + Chunk::getHeaderSize();
+
+  StaticSpinMutex StatsMutex;
+  u32 NumberOfAllocs;
+  u32 NumberOfFrees;
+  uptr AllocatedBytes;
+  uptr FreedBytes;
+  uptr LargestSize;
+};
+
+#endif  // SCUDO_ALLOCATOR_SECONDARY_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_crc32.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_crc32.cpp
new file mode 100644
index 0000000000..137c44c5c1
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_crc32.cpp
@@ -0,0 +1,24 @@
+//===-- scudo_crc32.cpp -----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// CRC32 function leveraging hardware specific instructions. This has to be
+/// kept separated to restrict the use of compiler specific flags to this file.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_crc32.h"
+
+namespace __scudo {
+
+#if defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+u32 computeHardwareCRC32(u32 Crc, uptr Data) {
+  return CRC32_INTRINSIC(Crc, Data);
+}
+#endif  // defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+
+}  // namespace __scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_crc32.h b/contrib/libs/clang14-rt/lib/scudo/scudo_crc32.h
new file mode 100644
index 0000000000..4314d30e92
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_crc32.h
@@ -0,0 +1,104 @@
+//===-- scudo_crc32.h -------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo chunk header checksum related definitions.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_CRC32_H_
+#define SCUDO_CRC32_H_
+
+#include "sanitizer_common/sanitizer_internal_defs.h"
+
+// Hardware CRC32 is supported at compilation via the following:
+// - for i386 & x86_64: -mcrc32 (earlier: -msse4.2)
+// - for ARM & AArch64: -march=armv8-a+crc or -mcrc
+// An additional check must be performed at runtime as well to make sure the
+// emitted instructions are valid on the target host.
+
+#if defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+# if defined(__CRC32__)
+// NB: clang has <crc32intrin.h> but GCC does not
+#  include <smmintrin.h>
+#  define CRC32_INTRINSIC FIRST_32_SECOND_64(__builtin_ia32_crc32si, __builtin_ia32_crc32di)
+# elif defined(__SSE4_2__)
+#  include <smmintrin.h>
+#  define CRC32_INTRINSIC FIRST_32_SECOND_64(_mm_crc32_u32, _mm_crc32_u64)
+# endif
+# ifdef __ARM_FEATURE_CRC32
+#  include <arm_acle.h>
+#  define CRC32_INTRINSIC FIRST_32_SECOND_64(__crc32cw, __crc32cd)
+# endif
+#endif  // defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+
+namespace __scudo {
+
+enum : u8 {
+  CRC32Software = 0,
+  CRC32Hardware = 1,
+};
+
+static const u32 CRC32Table[] = {
+  0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
+  0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+  0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
+  0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+  0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+  0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+  0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
+  0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+  0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
+  0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+  0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
+  0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+  0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
+  0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+  0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+  0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+  0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
+  0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+  0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
+  0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+  0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
+  0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+  0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
+  0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+  0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+  0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+  0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
+  0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+  0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
+  0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+  0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
+  0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+  0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
+  0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+  0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+  0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+  0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
+  0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+  0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
+  0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+  0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
+  0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+  0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+};
+
+inline u32 computeSoftwareCRC32(u32 Crc, uptr Data) {
+  for (uptr i = 0; i < sizeof(Data); i++) {
+    Crc = CRC32Table[(Crc ^ Data) & 0xff] ^ (Crc >> 8);
+    Data >>= 8;
+  }
+  return Crc;
+}
+
+SANITIZER_WEAK_ATTRIBUTE u32 computeHardwareCRC32(u32 Crc, uptr Data);
+
+}  // namespace __scudo
+
+#endif  // SCUDO_CRC32_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_errors.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_errors.cpp
new file mode 100644
index 0000000000..4bea9ebc6a
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_errors.cpp
@@ -0,0 +1,77 @@
+//===-- scudo_errors.cpp ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Verbose termination functions.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_utils.h"
+
+#include "sanitizer_common/sanitizer_flags.h"
+
+namespace __scudo {
+
+void NORETURN reportCallocOverflow(uptr Count, uptr Size) {
+  dieWithMessage("calloc parameters overflow: count * size (%zd * %zd) cannot "
+      "be represented with type size_t\n", Count, Size);
+}
+
+void NORETURN reportPvallocOverflow(uptr Size) {
+  dieWithMessage("pvalloc parameters overflow: size 0x%zx rounded up to system "
+      "page size 0x%zx cannot be represented in type size_t\n", Size,
+      GetPageSizeCached());
+}
+
+void NORETURN reportAllocationAlignmentTooBig(uptr Alignment,
+                                              uptr MaxAlignment) {
+  dieWithMessage("invalid allocation alignment: %zd exceeds maximum supported "
+      "allocation of %zd\n", Alignment, MaxAlignment);
+}
+
+void NORETURN reportAllocationAlignmentNotPowerOfTwo(uptr Alignment) {
+  dieWithMessage("invalid allocation alignment: %zd, alignment must be a power "
+      "of two\n", Alignment);
+}
+
+void NORETURN reportInvalidPosixMemalignAlignment(uptr Alignment) {
+  dieWithMessage(
+      "invalid alignment requested in posix_memalign: %zd, alignment"
+      " must be a power of two and a multiple of sizeof(void *) == %zd\n",
+      Alignment, sizeof(void *));
+}
+
+void NORETURN reportInvalidAlignedAllocAlignment(uptr Size, uptr Alignment) {
+#if SANITIZER_POSIX
+  dieWithMessage("invalid alignment requested in aligned_alloc: %zd, alignment "
+      "must be a power of two and the requested size 0x%zx must be a multiple "
+      "of alignment\n", Alignment, Size);
+#else
+  dieWithMessage("invalid alignment requested in aligned_alloc: %zd, the "
+      "requested size 0x%zx must be a multiple of alignment\n", Alignment,
+      Size);
+#endif
+}
+
+void NORETURN reportAllocationSizeTooBig(uptr UserSize, uptr TotalSize,
+                                         uptr MaxSize) {
+  dieWithMessage("requested allocation size 0x%zx (0x%zx after adjustments) "
+      "exceeds maximum supported size of 0x%zx\n", UserSize, TotalSize,
+      MaxSize);
+}
+
+void NORETURN reportRssLimitExceeded() {
+  dieWithMessage("specified RSS limit exceeded, currently set to "
+      "soft_rss_limit_mb=%zd\n", common_flags()->soft_rss_limit_mb);
+}
+
+void NORETURN reportOutOfMemory(uptr RequestedSize) {
+  dieWithMessage("allocator is out of memory trying to allocate 0x%zx bytes\n",
+                 RequestedSize);
+}
+
+}  // namespace __scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_errors.h b/contrib/libs/clang14-rt/lib/scudo/scudo_errors.h
new file mode 100644
index 0000000000..258695c2c0
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_errors.h
@@ -0,0 +1,34 @@
+//===-- scudo_errors.h ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Header for scudo_errors.cpp.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_ERRORS_H_
+#define SCUDO_ERRORS_H_
+
+#include "sanitizer_common/sanitizer_internal_defs.h"
+
+namespace __scudo {
+
+void NORETURN reportCallocOverflow(uptr Count, uptr Size);
+void NORETURN reportPvallocOverflow(uptr Size);
+void NORETURN reportAllocationAlignmentTooBig(uptr Alignment,
+                                              uptr MaxAlignment);
+void NORETURN reportAllocationAlignmentNotPowerOfTwo(uptr Alignment);
+void NORETURN reportInvalidPosixMemalignAlignment(uptr Alignment);
+void NORETURN reportInvalidAlignedAllocAlignment(uptr Size, uptr Alignment);
+void NORETURN reportAllocationSizeTooBig(uptr UserSize, uptr TotalSize,
+                                         uptr MaxSize);
+void NORETURN reportRssLimitExceeded();
+void NORETURN reportOutOfMemory(uptr RequestedSize);
+
+}  // namespace __scudo
+
+#endif  // SCUDO_ERRORS_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_flags.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_flags.cpp
new file mode 100644
index 0000000000..c564e217b3
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_flags.cpp
@@ -0,0 +1,136 @@
+//===-- scudo_flags.cpp -----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Hardened Allocator flag parsing logic.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_flags.h"
+#include "scudo_interface_internal.h"
+#include "scudo_utils.h"
+
+#include "sanitizer_common/sanitizer_flags.h"
+#include "sanitizer_common/sanitizer_flag_parser.h"
+
+namespace __scudo {
+
+static Flags ScudoFlags;  // Use via getFlags().
+
+void Flags::setDefaults() {
+#define SCUDO_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
+#include "scudo_flags.inc"
+#undef SCUDO_FLAG
+}
+
+static void RegisterScudoFlags(FlagParser *parser, Flags *f) {
+#define SCUDO_FLAG(Type, Name, DefaultValue, Description) \
+  RegisterFlag(parser, #Name, Description, &f->Name);
+#include "scudo_flags.inc"
+#undef SCUDO_FLAG
+}
+
+static const char *getCompileDefinitionScudoDefaultOptions() {
+#ifdef SCUDO_DEFAULT_OPTIONS
+  return SANITIZER_STRINGIFY(SCUDO_DEFAULT_OPTIONS);
+#else
+  return "";
+#endif
+}
+
+static const char *getScudoDefaultOptions() {
+  return (&__scudo_default_options) ? __scudo_default_options() : "";
+}
+
+void initFlags() {
+  SetCommonFlagsDefaults();
+  {
+    CommonFlags cf;
+    cf.CopyFrom(*common_flags());
+    cf.exitcode = 1;
+    OverrideCommonFlags(cf);
+  }
+  Flags *f = getFlags();
+  f->setDefaults();
+
+  FlagParser ScudoParser;
+  RegisterScudoFlags(&ScudoParser, f);
+  RegisterCommonFlags(&ScudoParser);
+
+  // Override from compile definition.
+  ScudoParser.ParseString(getCompileDefinitionScudoDefaultOptions());
+
+  // Override from user-specified string.
+  ScudoParser.ParseString(getScudoDefaultOptions());
+
+  // Override from environment.
+  ScudoParser.ParseStringFromEnv("SCUDO_OPTIONS");
+
+  InitializeCommonFlags();
+
+  // Sanity checks and default settings for the Quarantine parameters.
+
+  if (f->QuarantineSizeMb >= 0) {
+    // Backward compatible logic if QuarantineSizeMb is set.
+    if (f->QuarantineSizeKb >= 0) {
+      dieWithMessage("ERROR: please use either QuarantineSizeMb (deprecated) "
+          "or QuarantineSizeKb, but not both\n");
+    }
+    if (f->QuarantineChunksUpToSize >= 0) {
+      dieWithMessage("ERROR: QuarantineChunksUpToSize cannot be used in "
+          " conjunction with the deprecated QuarantineSizeMb option\n");
+    }
+    // If everything is in order, update QuarantineSizeKb accordingly.
+    f->QuarantineSizeKb = f->QuarantineSizeMb * 1024;
+  } else {
+    // Otherwise proceed with the new options.
+    if (f->QuarantineSizeKb < 0) {
+      const int DefaultQuarantineSizeKb = FIRST_32_SECOND_64(64, 256);
+      f->QuarantineSizeKb = DefaultQuarantineSizeKb;
+    }
+    if (f->QuarantineChunksUpToSize < 0) {
+      const int DefaultQuarantineChunksUpToSize = FIRST_32_SECOND_64(512, 2048);
+      f->QuarantineChunksUpToSize = DefaultQuarantineChunksUpToSize;
+    }
+  }
+
+  // We enforce an upper limit for the chunk quarantine threshold of 4Mb.
+  if (f->QuarantineChunksUpToSize > (4 * 1024 * 1024)) {
+    dieWithMessage("ERROR: the chunk quarantine threshold is too large\n");
+  }
+
+  // We enforce an upper limit for the quarantine size of 32Mb.
+  if (f->QuarantineSizeKb > (32 * 1024)) {
+    dieWithMessage("ERROR: the quarantine size is too large\n");
+  }
+
+  if (f->ThreadLocalQuarantineSizeKb < 0) {
+    const int DefaultThreadLocalQuarantineSizeKb = FIRST_32_SECOND_64(16, 64);
+    f->ThreadLocalQuarantineSizeKb = DefaultThreadLocalQuarantineSizeKb;
+  }
+  // And an upper limit of 8Mb for the thread quarantine cache.
+  if (f->ThreadLocalQuarantineSizeKb > (8 * 1024)) {
+    dieWithMessage("ERROR: the per thread quarantine cache size is too "
+        "large\n");
+  }
+  if (f->ThreadLocalQuarantineSizeKb == 0 && f->QuarantineSizeKb > 0) {
+    dieWithMessage("ERROR: ThreadLocalQuarantineSizeKb can be set to 0 only "
+        "when QuarantineSizeKb is set to 0\n");
+  }
+}
+
+Flags *getFlags() {
+  return &ScudoFlags;
+}
+
+}  // namespace __scudo
+
+#if !SANITIZER_SUPPORTS_WEAK_HOOKS
+SANITIZER_INTERFACE_WEAK_DEF(const char*, __scudo_default_options, void) {
+  return "";
+}
+#endif
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_flags.h b/contrib/libs/clang14-rt/lib/scudo/scudo_flags.h
new file mode 100644
index 0000000000..483c79621c
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_flags.h
@@ -0,0 +1,32 @@
+//===-- scudo_flags.h -------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Header for scudo_flags.cpp.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_FLAGS_H_
+#define SCUDO_FLAGS_H_
+
+namespace __scudo {
+
+struct Flags {
+#define SCUDO_FLAG(Type, Name, DefaultValue, Description) Type Name;
+#include "scudo_flags.inc"
+#undef SCUDO_FLAG
+
+  void setDefaults();
+};
+
+Flags *getFlags();
+
+void initFlags();
+
+}  // namespace __scudo
+
+#endif  // SCUDO_FLAGS_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_flags.inc b/contrib/libs/clang14-rt/lib/scudo/scudo_flags.inc
new file mode 100644
index 0000000000..c124738c1f
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_flags.inc
@@ -0,0 +1,48 @@
+//===-- scudo_flags.inc -----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Hardened Allocator runtime flags.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_FLAG
+# error "Define SCUDO_FLAG prior to including this file!"
+#endif
+
+SCUDO_FLAG(int, QuarantineSizeMb, -1,
+           "Deprecated. Please use QuarantineSizeKb.")
+
+// Default value is set in scudo_flags.cpp based on architecture.
+SCUDO_FLAG(int, QuarantineSizeKb, -1,
+           "Size in KB of quarantine used to delay the actual deallocation of "
+           "chunks. Lower value may reduce memory usage but decrease the "
+           "effectiveness of the mitigation. Defaults to 64KB (32-bit) or "
+           "256KB (64-bit)")
+
+// Default value is set in scudo_flags.cpp based on architecture.
+SCUDO_FLAG(int, ThreadLocalQuarantineSizeKb, -1,
+          "Size in KB of per-thread cache used to offload the global "
+          "quarantine. Lower value may reduce memory usage but might increase "
+          "the contention on the global quarantine. Defaults to 16KB (32-bit) "
+          "or 64KB (64-bit)")
+
+// Default value is set in scudo_flags.cpp based on architecture.
+SCUDO_FLAG(int, QuarantineChunksUpToSize, -1,
+          "Size in bytes up to which chunks will be quarantined (if lower than"
+          "or equal to). Defaults to 256 (32-bit) or 2048 (64-bit)")
+
+// Disable the deallocation type check by default on Android, it causes too many
+// issues with third party libraries.
+SCUDO_FLAG(bool, DeallocationTypeMismatch, !SANITIZER_ANDROID,
+          "Report errors on malloc/delete, new/free, new/delete[], etc.")
+
+SCUDO_FLAG(bool, DeleteSizeMismatch, true,
+           "Report errors on mismatch between size of new and delete.")
+
+SCUDO_FLAG(bool, ZeroContents, false,
+          "Zero chunk contents on allocation and deallocation.")
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_interface_internal.h b/contrib/libs/clang14-rt/lib/scudo/scudo_interface_internal.h
new file mode 100644
index 0000000000..75c63aa6d4
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_interface_internal.h
@@ -0,0 +1,32 @@
+//===-- scudo_interface_internal.h ------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Private Scudo interface header.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_INTERFACE_INTERNAL_H_
+#define SCUDO_INTERFACE_INTERNAL_H_
+
+#include "sanitizer_common/sanitizer_internal_defs.h"
+
+using __sanitizer::uptr;
+using __sanitizer::s32;
+
+extern "C" {
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+const char* __scudo_default_options();
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void __scudo_set_rss_limit(uptr LimitMb, s32 HardLimit);
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void __scudo_print_stats();
+}  // extern "C"
+
+#endif  // SCUDO_INTERFACE_INTERNAL_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_malloc.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_malloc.cpp
new file mode 100644
index 0000000000..a72b861e28
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_malloc.cpp
@@ -0,0 +1,84 @@
+//===-- scudo_malloc.cpp ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Interceptors for malloc related functions.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_allocator.h"
+
+#include "interception/interception.h"
+#include "sanitizer_common/sanitizer_platform_interceptors.h"
+
+#include <stddef.h>
+
+using namespace __scudo;
+
+extern "C" {
+INTERCEPTOR_ATTRIBUTE void free(void *ptr) {
+  scudoDeallocate(ptr, 0, 0, FromMalloc);
+}
+
+INTERCEPTOR_ATTRIBUTE void *malloc(size_t size) {
+  return scudoAllocate(size, 0, FromMalloc);
+}
+
+INTERCEPTOR_ATTRIBUTE void *realloc(void *ptr, size_t size) {
+  return scudoRealloc(ptr, size);
+}
+
+INTERCEPTOR_ATTRIBUTE void *calloc(size_t nmemb, size_t size) {
+  return scudoCalloc(nmemb, size);
+}
+
+INTERCEPTOR_ATTRIBUTE void *valloc(size_t size) {
+  return scudoValloc(size);
+}
+
+INTERCEPTOR_ATTRIBUTE
+int posix_memalign(void **memptr, size_t alignment, size_t size) {
+  return scudoPosixMemalign(memptr, alignment, size);
+}
+
+#if SANITIZER_INTERCEPT_CFREE
+INTERCEPTOR_ATTRIBUTE void cfree(void *ptr) ALIAS("free");
+#endif
+
+#if SANITIZER_INTERCEPT_MEMALIGN
+INTERCEPTOR_ATTRIBUTE void *memalign(size_t alignment, size_t size) {
+  return scudoAllocate(size, alignment, FromMemalign);
+}
+
+INTERCEPTOR_ATTRIBUTE
+void *__libc_memalign(size_t alignment, size_t size) ALIAS("memalign");
+#endif
+
+#if SANITIZER_INTERCEPT_PVALLOC
+INTERCEPTOR_ATTRIBUTE void *pvalloc(size_t size) {
+  return scudoPvalloc(size);
+}
+#endif
+
+#if SANITIZER_INTERCEPT_ALIGNED_ALLOC
+INTERCEPTOR_ATTRIBUTE void *aligned_alloc(size_t alignment, size_t size) {
+  return scudoAlignedAlloc(alignment, size);
+}
+#endif
+
+#if SANITIZER_INTERCEPT_MALLOC_USABLE_SIZE
+INTERCEPTOR_ATTRIBUTE size_t malloc_usable_size(void *ptr) {
+  return scudoMallocUsableSize(ptr);
+}
+#endif
+
+#if SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
+INTERCEPTOR_ATTRIBUTE int mallopt(int cmd, int value) {
+  return 0;
+}
+#endif
+}  // extern "C"
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_new_delete.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_new_delete.cpp
new file mode 100644
index 0000000000..03eef7f28b
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_new_delete.cpp
@@ -0,0 +1,107 @@
+//===-- scudo_new_delete.cpp ------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Interceptors for operators new and delete.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_allocator.h"
+#include "scudo_errors.h"
+
+#include "interception/interception.h"
+
+#include <stddef.h>
+
+using namespace __scudo;
+
+#define CXX_OPERATOR_ATTRIBUTE INTERCEPTOR_ATTRIBUTE
+
+// Fake std::nothrow_t to avoid including <new>.
+namespace std {
+struct nothrow_t {};
+enum class align_val_t: size_t {};
+}  // namespace std
+
+// TODO(alekseys): throw std::bad_alloc instead of dying on OOM.
+#define OPERATOR_NEW_BODY_ALIGN(Type, Align, NoThrow)              \
+  void *Ptr = scudoAllocate(size, static_cast<uptr>(Align), Type); \
+  if (!NoThrow && UNLIKELY(!Ptr)) reportOutOfMemory(size);         \
+  return Ptr;
+#define OPERATOR_NEW_BODY(Type, NoThrow) \
+  OPERATOR_NEW_BODY_ALIGN(Type, 0, NoThrow)
+
+CXX_OPERATOR_ATTRIBUTE
+void *operator new(size_t size)
+{ OPERATOR_NEW_BODY(FromNew, /*NoThrow=*/false); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new[](size_t size)
+{ OPERATOR_NEW_BODY(FromNewArray, /*NoThrow=*/false); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new(size_t size, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY(FromNew, /*NoThrow=*/true); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new[](size_t size, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY(FromNewArray, /*NoThrow=*/true); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align)
+{ OPERATOR_NEW_BODY_ALIGN(FromNew, align, /*NoThrow=*/false); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align)
+{ OPERATOR_NEW_BODY_ALIGN(FromNewArray, align, /*NoThrow=*/false); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY_ALIGN(FromNew, align, /*NoThrow=*/true); }
+CXX_OPERATOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY_ALIGN(FromNewArray, align, /*NoThrow=*/true); }
+
+#define OPERATOR_DELETE_BODY(Type) \
+  scudoDeallocate(ptr, 0, 0, Type);
+#define OPERATOR_DELETE_BODY_SIZE(Type) \
+  scudoDeallocate(ptr, size, 0, Type);
+#define OPERATOR_DELETE_BODY_ALIGN(Type) \
+  scudoDeallocate(ptr, 0, static_cast<uptr>(align), Type);
+#define OPERATOR_DELETE_BODY_SIZE_ALIGN(Type) \
+  scudoDeallocate(ptr, size, static_cast<uptr>(align), Type);
+
+CXX_OPERATOR_ATTRIBUTE
+void operator delete(void *ptr) NOEXCEPT
+{ OPERATOR_DELETE_BODY(FromNew); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete[](void *ptr) NOEXCEPT
+{ OPERATOR_DELETE_BODY(FromNewArray); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete(void *ptr, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY(FromNew); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete[](void *ptr, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY(FromNewArray); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete(void *ptr, size_t size) NOEXCEPT
+{ OPERATOR_DELETE_BODY_SIZE(FromNew); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete[](void *ptr, size_t size) NOEXCEPT
+{ OPERATOR_DELETE_BODY_SIZE(FromNewArray); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t align) NOEXCEPT
+{ OPERATOR_DELETE_BODY_ALIGN(FromNew); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t align) NOEXCEPT
+{ OPERATOR_DELETE_BODY_ALIGN(FromNewArray); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY_ALIGN(FromNew); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY_ALIGN(FromNewArray); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete(void *ptr, size_t size, std::align_val_t align) NOEXCEPT
+{ OPERATOR_DELETE_BODY_SIZE_ALIGN(FromNew); }
+CXX_OPERATOR_ATTRIBUTE
+void operator delete[](void *ptr, size_t size, std::align_val_t align) NOEXCEPT
+{ OPERATOR_DELETE_BODY_SIZE_ALIGN(FromNewArray); }
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_platform.h b/contrib/libs/clang14-rt/lib/scudo/scudo_platform.h
new file mode 100644
index 0000000000..07d4b70fc8
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_platform.h
@@ -0,0 +1,93 @@
+//===-- scudo_platform.h ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo platform specific definitions.
+/// TODO(kostyak): add tests for the compile time defines.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_PLATFORM_H_
+#define SCUDO_PLATFORM_H_
+
+#include "sanitizer_common/sanitizer_allocator.h"
+
+#if !SANITIZER_LINUX && !SANITIZER_FUCHSIA
+# error "The Scudo hardened allocator is not supported on this platform."
+#endif
+
+#define SCUDO_TSD_EXCLUSIVE_SUPPORTED (!SANITIZER_ANDROID && !SANITIZER_FUCHSIA)
+
+#ifndef SCUDO_TSD_EXCLUSIVE
+// SCUDO_TSD_EXCLUSIVE wasn't defined, use a default TSD model for the platform.
+# if SANITIZER_ANDROID || SANITIZER_FUCHSIA
+// Android and Fuchsia use a pool of TSDs shared between threads.
+#  define SCUDO_TSD_EXCLUSIVE 0
+# elif SANITIZER_LINUX && !SANITIZER_ANDROID
+// Non-Android Linux use an exclusive TSD per thread.
+#  define SCUDO_TSD_EXCLUSIVE 1
+# else
+#  error "No default TSD model defined for this platform."
+# endif  // SANITIZER_ANDROID || SANITIZER_FUCHSIA
+#endif  // SCUDO_TSD_EXCLUSIVE
+
+// If the exclusive TSD model is chosen, make sure the platform supports it.
+#if SCUDO_TSD_EXCLUSIVE && !SCUDO_TSD_EXCLUSIVE_SUPPORTED
+# error "The exclusive TSD model is not supported on this platform."
+#endif
+
+// Maximum number of TSDs that can be created for the Shared model.
+#ifndef SCUDO_SHARED_TSD_POOL_SIZE
+# if SANITIZER_ANDROID
+#  define SCUDO_SHARED_TSD_POOL_SIZE 2U
+# else
+#  define SCUDO_SHARED_TSD_POOL_SIZE 32U
+# endif  // SANITIZER_ANDROID
+#endif  // SCUDO_SHARED_TSD_POOL_SIZE
+
+// The following allows the public interface functions to be disabled.
+#ifndef SCUDO_CAN_USE_PUBLIC_INTERFACE
+# define SCUDO_CAN_USE_PUBLIC_INTERFACE 1
+#endif
+
+// Hooks in the allocation & deallocation paths can become a security concern if
+// implemented improperly, or if overwritten by an attacker. Use with caution.
+#ifndef SCUDO_CAN_USE_HOOKS
+# if SANITIZER_FUCHSIA
+#  define SCUDO_CAN_USE_HOOKS 1
+# else
+#  define SCUDO_CAN_USE_HOOKS 0
+# endif  // SANITIZER_FUCHSIA
+#endif  // SCUDO_CAN_USE_HOOKS
+
+namespace __scudo {
+
+#if SANITIZER_CAN_USE_ALLOCATOR64
+# if defined(__aarch64__) && SANITIZER_ANDROID
+const uptr AllocatorSize = 0x4000000000ULL;  // 256G.
+# elif defined(__aarch64__)
+const uptr AllocatorSize = 0x10000000000ULL;  // 1T.
+# else
+const uptr AllocatorSize = 0x40000000000ULL;  // 4T.
+# endif
+#else
+const uptr RegionSizeLog = SANITIZER_ANDROID ? 19 : 20;
+#endif  // SANITIZER_CAN_USE_ALLOCATOR64
+
+#if !defined(SCUDO_SIZE_CLASS_MAP)
+# define SCUDO_SIZE_CLASS_MAP Dense
+#endif
+
+#define SIZE_CLASS_MAP_TYPE SIZE_CLASS_MAP_TYPE_(SCUDO_SIZE_CLASS_MAP)
+#define SIZE_CLASS_MAP_TYPE_(T) SIZE_CLASS_MAP_TYPE__(T)
+#define SIZE_CLASS_MAP_TYPE__(T) T##SizeClassMap
+
+typedef SIZE_CLASS_MAP_TYPE SizeClassMap;
+
+}  // namespace __scudo
+
+#endif // SCUDO_PLATFORM_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_termination.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_termination.cpp
new file mode 100644
index 0000000000..5f1337efac
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_termination.cpp
@@ -0,0 +1,41 @@
+//===-- scudo_termination.cpp -----------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// This file contains bare-bones termination functions to replace the
+/// __sanitizer ones, in order to avoid any potential abuse of the callbacks
+/// functionality.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_utils.h"
+
+#include "sanitizer_common/sanitizer_common.h"
+
+namespace __sanitizer {
+
+bool AddDieCallback(DieCallbackType Callback) { return true; }
+
+bool RemoveDieCallback(DieCallbackType Callback) { return true; }
+
+void SetUserDieCallback(DieCallbackType Callback) {}
+
+void NORETURN Die() {
+  if (common_flags()->abort_on_error)
+    Abort();
+  internal__exit(common_flags()->exitcode);
+}
+
+void SetCheckUnwindCallback(void (*callback)()) {}
+
+void NORETURN CheckFailed(const char *File, int Line, const char *Condition,
+                          u64 Value1, u64 Value2) {
+  __scudo::dieWithMessage("CHECK failed at %s:%d %s (%lld, %lld)\n",
+                          File, Line, Condition, Value1, Value2);
+}
+
+}  // namespace __sanitizer
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_tsd.h b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd.h
new file mode 100644
index 0000000000..eef4a7ba1e
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd.h
@@ -0,0 +1,65 @@
+//===-- scudo_tsd.h ---------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo thread specific data definition.
+/// Implementation will differ based on the thread local storage primitives
+/// offered by the underlying platform.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_TSD_H_
+#define SCUDO_TSD_H_
+
+#include "scudo_allocator.h"
+#include "scudo_utils.h"
+
+#include <pthread.h>
+
+namespace __scudo {
+
+struct ALIGNED(SANITIZER_CACHE_LINE_SIZE) ScudoTSD {
+  AllocatorCacheT Cache;
+  uptr QuarantineCachePlaceHolder[4];
+
+  void init();
+  void commitBack();
+
+  inline bool tryLock() SANITIZER_TRY_ACQUIRE(true, Mutex) {
+    if (Mutex.TryLock()) {
+      atomic_store_relaxed(&Precedence, 0);
+      return true;
+    }
+    if (atomic_load_relaxed(&Precedence) == 0)
+      atomic_store_relaxed(&Precedence, static_cast<uptr>(
+          MonotonicNanoTime() >> FIRST_32_SECOND_64(16, 0)));
+    return false;
+  }
+
+  inline void lock() SANITIZER_ACQUIRE(Mutex) {
+    atomic_store_relaxed(&Precedence, 0);
+    Mutex.Lock();
+  }
+
+  inline void unlock() SANITIZER_RELEASE(Mutex) { Mutex.Unlock(); }
+
+  inline uptr getPrecedence() { return atomic_load_relaxed(&Precedence); }
+
+ private:
+  StaticSpinMutex Mutex;
+  atomic_uintptr_t Precedence;
+};
+
+void initThread(bool MinimalInit);
+
+// TSD model specific fastpath functions definitions.
+#include "scudo_tsd_exclusive.inc"
+#include "scudo_tsd_shared.inc"
+
+}  // namespace __scudo
+
+#endif  // SCUDO_TSD_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_exclusive.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_exclusive.cpp
new file mode 100644
index 0000000000..a203a74bbc
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_exclusive.cpp
@@ -0,0 +1,67 @@
+//===-- scudo_tsd_exclusive.cpp ---------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo exclusive TSD implementation.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_tsd.h"
+
+#if SCUDO_TSD_EXCLUSIVE
+
+namespace __scudo {
+
+static pthread_once_t GlobalInitialized = PTHREAD_ONCE_INIT;
+static pthread_key_t PThreadKey;
+
+__attribute__((tls_model("initial-exec")))
+THREADLOCAL ThreadState ScudoThreadState = ThreadNotInitialized;
+__attribute__((tls_model("initial-exec")))
+THREADLOCAL ScudoTSD TSD;
+
+// Fallback TSD for when the thread isn't initialized yet or is torn down. It
+// can be shared between multiple threads and as such must be locked.
+ScudoTSD FallbackTSD;
+
+static void teardownThread(void *Ptr) {
+  uptr I = reinterpret_cast<uptr>(Ptr);
+  // The glibc POSIX thread-local-storage deallocation routine calls user
+  // provided destructors in a loop of PTHREAD_DESTRUCTOR_ITERATIONS.
+  // We want to be called last since other destructors might call free and the
+  // like, so we wait until PTHREAD_DESTRUCTOR_ITERATIONS before draining the
+  // quarantine and swallowing the cache.
+  if (I > 1) {
+    // If pthread_setspecific fails, we will go ahead with the teardown.
+    if (LIKELY(pthread_setspecific(PThreadKey,
+                                   reinterpret_cast<void *>(I - 1)) == 0))
+      return;
+  }
+  TSD.commitBack();
+  ScudoThreadState = ThreadTornDown;
+}
+
+
+static void initOnce() {
+  CHECK_EQ(pthread_key_create(&PThreadKey, teardownThread), 0);
+  initScudo();
+  FallbackTSD.init();
+}
+
+void initThread(bool MinimalInit) {
+  CHECK_EQ(pthread_once(&GlobalInitialized, initOnce), 0);
+  if (UNLIKELY(MinimalInit))
+    return;
+  CHECK_EQ(pthread_setspecific(PThreadKey, reinterpret_cast<void *>(
+      GetPthreadDestructorIterations())), 0);
+  TSD.init();
+  ScudoThreadState = ThreadInitialized;
+}
+
+}  // namespace __scudo
+
+#endif  // SCUDO_TSD_EXCLUSIVE
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_exclusive.inc b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_exclusive.inc
new file mode 100644
index 0000000000..dc4d982f2f
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_exclusive.inc
@@ -0,0 +1,47 @@
+//===-- scudo_tsd_exclusive.inc ---------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo exclusive TSD fastpath functions implementation.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_TSD_H_
+#error "This file must be included inside scudo_tsd.h."
+#endif // SCUDO_TSD_H_
+
+#if SCUDO_TSD_EXCLUSIVE
+
+enum ThreadState : u8 {
+  ThreadNotInitialized = 0,
+  ThreadInitialized,
+  ThreadTornDown,
+};
+__attribute__((
+    tls_model("initial-exec"))) extern THREADLOCAL ThreadState ScudoThreadState;
+__attribute__((tls_model("initial-exec"))) extern THREADLOCAL ScudoTSD TSD;
+
+extern ScudoTSD FallbackTSD;
+
+ALWAYS_INLINE void initThreadMaybe(bool MinimalInit = false) {
+  if (LIKELY(ScudoThreadState != ThreadNotInitialized))
+    return;
+  initThread(MinimalInit);
+}
+
+ALWAYS_INLINE ScudoTSD *
+getTSDAndLock(bool *UnlockRequired) SANITIZER_NO_THREAD_SAFETY_ANALYSIS {
+  if (UNLIKELY(ScudoThreadState != ThreadInitialized)) {
+    FallbackTSD.lock();
+    *UnlockRequired = true;
+    return &FallbackTSD;
+  }
+  *UnlockRequired = false;
+  return &TSD;
+}
+
+#endif // SCUDO_TSD_EXCLUSIVE
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_shared.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_shared.cpp
new file mode 100644
index 0000000000..fc691b21a2
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_shared.cpp
@@ -0,0 +1,107 @@
+//===-- scudo_tsd_shared.cpp ------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo shared TSD implementation.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_tsd.h"
+
+#if !SCUDO_TSD_EXCLUSIVE
+
+namespace __scudo {
+
+static pthread_once_t GlobalInitialized = PTHREAD_ONCE_INIT;
+pthread_key_t PThreadKey;
+
+static atomic_uint32_t CurrentIndex;
+static ScudoTSD *TSDs;
+static u32 NumberOfTSDs;
+static u32 CoPrimes[SCUDO_SHARED_TSD_POOL_SIZE];
+static u32 NumberOfCoPrimes = 0;
+
+#if SANITIZER_LINUX && !SANITIZER_ANDROID
+__attribute__((tls_model("initial-exec")))
+THREADLOCAL ScudoTSD *CurrentTSD;
+#endif
+
+static void initOnce() {
+  CHECK_EQ(pthread_key_create(&PThreadKey, NULL), 0);
+  initScudo();
+  NumberOfTSDs = Min(Max(1U, GetNumberOfCPUsCached()),
+                     static_cast<u32>(SCUDO_SHARED_TSD_POOL_SIZE));
+  TSDs = reinterpret_cast<ScudoTSD *>(
+      MmapOrDie(sizeof(ScudoTSD) * NumberOfTSDs, "ScudoTSDs"));
+  for (u32 I = 0; I < NumberOfTSDs; I++) {
+    TSDs[I].init();
+    u32 A = I + 1;
+    u32 B = NumberOfTSDs;
+    while (B != 0) { const u32 T = A; A = B; B = T % B; }
+    if (A == 1)
+      CoPrimes[NumberOfCoPrimes++] = I + 1;
+  }
+}
+
+ALWAYS_INLINE void setCurrentTSD(ScudoTSD *TSD) {
+#if SANITIZER_ANDROID
+  *get_android_tls_ptr() = reinterpret_cast<uptr>(TSD);
+#elif SANITIZER_LINUX
+  CurrentTSD = TSD;
+#else
+  CHECK_EQ(pthread_setspecific(PThreadKey, reinterpret_cast<void *>(TSD)), 0);
+#endif  // SANITIZER_ANDROID
+}
+
+void initThread(bool MinimalInit) {
+  pthread_once(&GlobalInitialized, initOnce);
+  // Initial context assignment is done in a plain round-robin fashion.
+  u32 Index = atomic_fetch_add(&CurrentIndex, 1, memory_order_relaxed);
+  setCurrentTSD(&TSDs[Index % NumberOfTSDs]);
+}
+
+ScudoTSD *getTSDAndLockSlow(ScudoTSD *TSD) SANITIZER_NO_THREAD_SAFETY_ANALYSIS {
+  if (NumberOfTSDs > 1) {
+    // Use the Precedence of the current TSD as our random seed. Since we are in
+    // the slow path, it means that tryLock failed, and as a result it's very
+    // likely that said Precedence is non-zero.
+    u32 RandState = static_cast<u32>(TSD->getPrecedence());
+    const u32 R = Rand(&RandState);
+    const u32 Inc = CoPrimes[R % NumberOfCoPrimes];
+    u32 Index = R % NumberOfTSDs;
+    uptr LowestPrecedence = UINTPTR_MAX;
+    ScudoTSD *CandidateTSD = nullptr;
+    // Go randomly through at most 4 contexts and find a candidate.
+    for (u32 I = 0; I < Min(4U, NumberOfTSDs); I++) {
+      if (TSDs[Index].tryLock()) {
+        setCurrentTSD(&TSDs[Index]);
+        return &TSDs[Index];
+      }
+      const uptr Precedence = TSDs[Index].getPrecedence();
+      // A 0 precedence here means another thread just locked this TSD.
+      if (Precedence && Precedence < LowestPrecedence) {
+        CandidateTSD = &TSDs[Index];
+        LowestPrecedence = Precedence;
+      }
+      Index += Inc;
+      if (Index >= NumberOfTSDs)
+        Index -= NumberOfTSDs;
+    }
+    if (CandidateTSD) {
+      CandidateTSD->lock();
+      setCurrentTSD(CandidateTSD);
+      return CandidateTSD;
+    }
+  }
+  // Last resort, stick with the current one.
+  TSD->lock();
+  return TSD;
+}
+
+}  // namespace __scudo
+
+#endif  // !SCUDO_TSD_EXCLUSIVE
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_shared.inc b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_shared.inc
new file mode 100644
index 0000000000..b25392a963
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_tsd_shared.inc
@@ -0,0 +1,56 @@
+//===-- scudo_tsd_shared.inc ------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Scudo shared TSD fastpath functions implementation.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_TSD_H_
+# error "This file must be included inside scudo_tsd.h."
+#endif  // SCUDO_TSD_H_
+
+#if !SCUDO_TSD_EXCLUSIVE
+
+extern pthread_key_t PThreadKey;
+
+#if SANITIZER_LINUX && !SANITIZER_ANDROID
+__attribute__((tls_model("initial-exec")))
+extern THREADLOCAL ScudoTSD *CurrentTSD;
+#endif
+
+ALWAYS_INLINE ScudoTSD* getCurrentTSD() {
+#if SANITIZER_ANDROID
+  return reinterpret_cast<ScudoTSD *>(*get_android_tls_ptr());
+#elif SANITIZER_LINUX
+  return CurrentTSD;
+#else
+  return reinterpret_cast<ScudoTSD *>(pthread_getspecific(PThreadKey));
+#endif  // SANITIZER_ANDROID
+}
+
+ALWAYS_INLINE void initThreadMaybe(bool MinimalInit = false) {
+  if (LIKELY(getCurrentTSD()))
+    return;
+  initThread(MinimalInit);
+}
+
+ScudoTSD *getTSDAndLockSlow(ScudoTSD *TSD);
+
+ALWAYS_INLINE ScudoTSD *
+getTSDAndLock(bool *UnlockRequired) SANITIZER_NO_THREAD_SAFETY_ANALYSIS {
+  ScudoTSD *TSD = getCurrentTSD();
+  DCHECK(TSD && "No TSD associated with the current thread!");
+  *UnlockRequired = true;
+  // Try to lock the currently associated context.
+  if (TSD->tryLock())
+    return TSD;
+  // If it failed, go the slow path.
+  return getTSDAndLockSlow(TSD);
+}
+
+#endif  // !SCUDO_TSD_EXCLUSIVE
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_utils.cpp b/contrib/libs/clang14-rt/lib/scudo/scudo_utils.cpp
new file mode 100644
index 0000000000..d36a726f00
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_utils.cpp
@@ -0,0 +1,145 @@
+//===-- scudo_utils.cpp -----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Platform specific utility functions.
+///
+//===----------------------------------------------------------------------===//
+
+#include "scudo_utils.h"
+
+#if defined(__x86_64__) || defined(__i386__)
+# include <cpuid.h>
+#elif defined(__arm__) || defined(__aarch64__)
+# include "sanitizer_common/sanitizer_getauxval.h"
+# if SANITIZER_FUCHSIA
+#  error #include <zircon/syscalls.h>
+#  error #include <zircon/features.h>
+# elif SANITIZER_POSIX
+#  include "sanitizer_common/sanitizer_posix.h"
+#  include <fcntl.h>
+# endif
+#endif
+
+#include <stdarg.h>
+
+// TODO(kostyak): remove __sanitizer *Printf uses in favor for our own less
+//                complicated string formatting code. The following is a
+//                temporary workaround to be able to use __sanitizer::VSNPrintf.
+namespace __sanitizer {
+
+extern int VSNPrintf(char *buff, int buff_length, const char *format,
+                     va_list args);
+
+}  // namespace __sanitizer
+
+namespace __scudo {
+
+void dieWithMessage(const char *Format, ...) {
+  static const char ScudoError[] = "Scudo ERROR: ";
+  static constexpr uptr PrefixSize = sizeof(ScudoError) - 1;
+  // Our messages are tiny, 256 characters is more than enough.
+  char Message[256];
+  va_list Args;
+  va_start(Args, Format);
+  internal_memcpy(Message, ScudoError, PrefixSize);
+  VSNPrintf(Message + PrefixSize, sizeof(Message) - PrefixSize, Format, Args);
+  va_end(Args);
+  LogMessageOnPrintf(Message);
+  if (common_flags()->abort_on_error)
+    SetAbortMessage(Message);
+  RawWrite(Message);
+  Die();
+}
+
+#if defined(__x86_64__) || defined(__i386__)
+// i386 and x86_64 specific code to detect CRC32 hardware support via CPUID.
+// CRC32 requires the SSE 4.2 instruction set.
+# ifndef bit_SSE4_2
+#  define bit_SSE4_2 bit_SSE42  // clang and gcc have different defines.
+# endif
+
+#ifndef signature_HYGON_ebx // They are not defined in gcc.
+// HYGON: "HygonGenuine".
+#define signature_HYGON_ebx 0x6f677948
+#define signature_HYGON_edx 0x6e65476e
+#define signature_HYGON_ecx 0x656e6975
+#endif
+
+bool hasHardwareCRC32() {
+  u32 Eax, Ebx, Ecx, Edx;
+  __get_cpuid(0, &Eax, &Ebx, &Ecx, &Edx);
+  const bool IsIntel = (Ebx == signature_INTEL_ebx) &&
+                       (Edx == signature_INTEL_edx) &&
+                       (Ecx == signature_INTEL_ecx);
+  const bool IsAMD = (Ebx == signature_AMD_ebx) &&
+                     (Edx == signature_AMD_edx) &&
+                     (Ecx == signature_AMD_ecx);
+  const bool IsHygon = (Ebx == signature_HYGON_ebx) &&
+                       (Edx == signature_HYGON_edx) &&
+                       (Ecx == signature_HYGON_ecx);
+  if (!IsIntel && !IsAMD && !IsHygon)
+    return false;
+  __get_cpuid(1, &Eax, &Ebx, &Ecx, &Edx);
+  return !!(Ecx & bit_SSE4_2);
+}
+#elif defined(__arm__) || defined(__aarch64__)
+// For ARM and AArch64, hardware CRC32 support is indicated in the AT_HWCAP
+// auxiliary vector.
+# ifndef AT_HWCAP
+#  define AT_HWCAP 16
+# endif
+# ifndef HWCAP_CRC32
+#  define HWCAP_CRC32 (1 << 7)  // HWCAP_CRC32 is missing on older platforms.
+# endif
+# if SANITIZER_POSIX
+bool hasHardwareCRC32ARMPosix() {
+  uptr F = internal_open("/proc/self/auxv", O_RDONLY);
+  if (internal_iserror(F))
+    return false;
+  struct { uptr Tag; uptr Value; } Entry = { 0, 0 };
+  for (;;) {
+    uptr N = internal_read(F, &Entry, sizeof(Entry));
+    if (internal_iserror(N) || N != sizeof(Entry) ||
+        (Entry.Tag == 0 && Entry.Value == 0) || Entry.Tag == AT_HWCAP)
+      break;
+  }
+  internal_close(F);
+  return (Entry.Tag == AT_HWCAP && (Entry.Value & HWCAP_CRC32) != 0);
+}
+# else
+bool hasHardwareCRC32ARMPosix() { return false; }
+# endif  // SANITIZER_POSIX
+
+// Bionic doesn't initialize its globals early enough. This causes issues when
+// trying to access them from a preinit_array (b/25751302) or from another
+// constructor called before the libc one (b/68046352). __progname is
+// initialized after the other globals, so we can check its value to know if
+// calling getauxval is safe.
+extern "C" SANITIZER_WEAK_ATTRIBUTE char *__progname;
+inline bool areBionicGlobalsInitialized() {
+  return !SANITIZER_ANDROID || (&__progname && __progname);
+}
+
+bool hasHardwareCRC32() {
+#if SANITIZER_FUCHSIA
+  u32 HWCap;
+  zx_status_t Status = zx_system_get_features(ZX_FEATURE_KIND_CPU, &HWCap);
+  if (Status != ZX_OK || (HWCap & ZX_ARM64_FEATURE_ISA_CRC32) == 0)
+    return false;
+  return true;
+#else
+  if (&getauxval && areBionicGlobalsInitialized())
+    return !!(getauxval(AT_HWCAP) & HWCAP_CRC32);
+  return hasHardwareCRC32ARMPosix();
+#endif  // SANITIZER_FUCHSIA
+}
+#else
+bool hasHardwareCRC32() { return false; }
+#endif  // defined(__x86_64__) || defined(__i386__)
+
+}  // namespace __scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/scudo_utils.h b/contrib/libs/clang14-rt/lib/scudo/scudo_utils.h
new file mode 100644
index 0000000000..5a9b32f0b2
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/scudo_utils.h
@@ -0,0 +1,36 @@
+//===-- scudo_utils.h -------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// Header for scudo_utils.cpp.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_UTILS_H_
+#define SCUDO_UTILS_H_
+
+#include "sanitizer_common/sanitizer_common.h"
+
+#include <string.h>
+
+namespace __scudo {
+
+template <class Dest, class Source>
+inline Dest bit_cast(const Source& source) {
+  static_assert(sizeof(Dest) == sizeof(Source), "Sizes are not equal!");
+  Dest dest;
+  memcpy(&dest, &source, sizeof(dest));
+  return dest;
+}
+
+void dieWithMessage(const char *Format, ...) NORETURN FORMAT(1, 2);
+
+bool hasHardwareCRC32();
+
+}  // namespace __scudo
+
+#endif  // SCUDO_UTILS_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/allocator_config.h b/contrib/libs/clang14-rt/lib/scudo/standalone/allocator_config.h
new file mode 100644
index 0000000000..e6f46b511d
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/allocator_config.h
@@ -0,0 +1,204 @@
+//===-- allocator_config.h --------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_ALLOCATOR_CONFIG_H_
+#define SCUDO_ALLOCATOR_CONFIG_H_
+
+#include "combined.h"
+#include "common.h"
+#include "flags.h"
+#include "primary32.h"
+#include "primary64.h"
+#include "secondary.h"
+#include "size_class_map.h"
+#include "tsd_exclusive.h"
+#include "tsd_shared.h"
+
+namespace scudo {
+
+// The combined allocator uses a structure as a template argument that
+// specifies the configuration options for the various subcomponents of the
+// allocator.
+//
+// struct ExampleConfig {
+//   // SizeClasMmap to use with the Primary.
+//   using SizeClassMap = DefaultSizeClassMap;
+//   // Indicates possible support for Memory Tagging.
+//   static const bool MaySupportMemoryTagging = false;
+//   // Defines the Primary allocator to use.
+//   typedef SizeClassAllocator64<ExampleConfig> Primary;
+//   // Log2 of the size of a size class region, as used by the Primary.
+//   static const uptr PrimaryRegionSizeLog = 30U;
+//   // Defines the type and scale of a compact pointer. A compact pointer can
+//   // be understood as the offset of a pointer within the region it belongs
+//   // to, in increments of a power-of-2 scale.
+//   // eg: Ptr = Base + (CompactPtr << Scale).
+//   typedef u32 PrimaryCompactPtrT;
+//   static const uptr PrimaryCompactPtrScale = SCUDO_MIN_ALIGNMENT_LOG;
+//   // Indicates support for offsetting the start of a region by
+//   // a random number of pages. Only used with primary64.
+//   static const bool PrimaryEnableRandomOffset = true;
+//   // Call map for user memory with at least this size. Only used with
+//   // primary64.
+//   static const uptr PrimaryMapSizeIncrement = 1UL << 18;
+//   // Defines the minimal & maximal release interval that can be set.
+//   static const s32 PrimaryMinReleaseToOsIntervalMs = INT32_MIN;
+//   static const s32 PrimaryMaxReleaseToOsIntervalMs = INT32_MAX;
+//   // Defines the type of cache used by the Secondary. Some additional
+//   // configuration entries can be necessary depending on the Cache.
+//   typedef MapAllocatorNoCache SecondaryCache;
+//   // Thread-Specific Data Registry used, shared or exclusive.
+//   template <class A> using TSDRegistryT = TSDRegistrySharedT<A, 8U, 4U>;
+// };
+
+// Default configurations for various platforms.
+
+struct DefaultConfig {
+  using SizeClassMap = DefaultSizeClassMap;
+  static const bool MaySupportMemoryTagging = true;
+
+#if SCUDO_CAN_USE_PRIMARY64
+  typedef SizeClassAllocator64<DefaultConfig> Primary;
+  static const uptr PrimaryRegionSizeLog = 32U;
+  typedef uptr PrimaryCompactPtrT;
+  static const uptr PrimaryCompactPtrScale = 0;
+  static const bool PrimaryEnableRandomOffset = true;
+  static const uptr PrimaryMapSizeIncrement = 1UL << 18;
+#else
+  typedef SizeClassAllocator32<DefaultConfig> Primary;
+  static const uptr PrimaryRegionSizeLog = 19U;
+  typedef uptr PrimaryCompactPtrT;
+#endif
+  static const s32 PrimaryMinReleaseToOsIntervalMs = INT32_MIN;
+  static const s32 PrimaryMaxReleaseToOsIntervalMs = INT32_MAX;
+
+  typedef MapAllocatorCache<DefaultConfig> SecondaryCache;
+  static const u32 SecondaryCacheEntriesArraySize = 32U;
+  static const u32 SecondaryCacheQuarantineSize = 0U;
+  static const u32 SecondaryCacheDefaultMaxEntriesCount = 32U;
+  static const uptr SecondaryCacheDefaultMaxEntrySize = 1UL << 19;
+  static const s32 SecondaryCacheMinReleaseToOsIntervalMs = INT32_MIN;
+  static const s32 SecondaryCacheMaxReleaseToOsIntervalMs = INT32_MAX;
+
+  template <class A> using TSDRegistryT = TSDRegistryExT<A>; // Exclusive
+};
+struct AndroidConfig {
+  using SizeClassMap = AndroidSizeClassMap;
+  static const bool MaySupportMemoryTagging = true;
+
+#if SCUDO_CAN_USE_PRIMARY64
+  typedef SizeClassAllocator64<AndroidConfig> Primary;
+  static const uptr PrimaryRegionSizeLog = 28U;
+  typedef u32 PrimaryCompactPtrT;
+  static const uptr PrimaryCompactPtrScale = SCUDO_MIN_ALIGNMENT_LOG;
+  static const bool PrimaryEnableRandomOffset = true;
+  static const uptr PrimaryMapSizeIncrement = 1UL << 18;
+#else
+  typedef SizeClassAllocator32<AndroidConfig> Primary;
+  static const uptr PrimaryRegionSizeLog = 18U;
+  typedef uptr PrimaryCompactPtrT;
+#endif
+  static const s32 PrimaryMinReleaseToOsIntervalMs = 1000;
+  static const s32 PrimaryMaxReleaseToOsIntervalMs = 1000;
+
+  typedef MapAllocatorCache<AndroidConfig> SecondaryCache;
+  static const u32 SecondaryCacheEntriesArraySize = 256U;
+  static const u32 SecondaryCacheQuarantineSize = 32U;
+  static const u32 SecondaryCacheDefaultMaxEntriesCount = 32U;
+  static const uptr SecondaryCacheDefaultMaxEntrySize = 2UL << 20;
+  static const s32 SecondaryCacheMinReleaseToOsIntervalMs = 0;
+  static const s32 SecondaryCacheMaxReleaseToOsIntervalMs = 1000;
+
+  template <class A>
+  using TSDRegistryT = TSDRegistrySharedT<A, 8U, 2U>; // Shared, max 8 TSDs.
+};
+
+struct AndroidSvelteConfig {
+  using SizeClassMap = SvelteSizeClassMap;
+  static const bool MaySupportMemoryTagging = false;
+
+#if SCUDO_CAN_USE_PRIMARY64
+  typedef SizeClassAllocator64<AndroidSvelteConfig> Primary;
+  static const uptr PrimaryRegionSizeLog = 27U;
+  typedef u32 PrimaryCompactPtrT;
+  static const uptr PrimaryCompactPtrScale = SCUDO_MIN_ALIGNMENT_LOG;
+  static const bool PrimaryEnableRandomOffset = true;
+  static const uptr PrimaryMapSizeIncrement = 1UL << 18;
+#else
+  typedef SizeClassAllocator32<AndroidSvelteConfig> Primary;
+  static const uptr PrimaryRegionSizeLog = 16U;
+  typedef uptr PrimaryCompactPtrT;
+#endif
+  static const s32 PrimaryMinReleaseToOsIntervalMs = 1000;
+  static const s32 PrimaryMaxReleaseToOsIntervalMs = 1000;
+
+  typedef MapAllocatorCache<AndroidSvelteConfig> SecondaryCache;
+  static const u32 SecondaryCacheEntriesArraySize = 16U;
+  static const u32 SecondaryCacheQuarantineSize = 32U;
+  static const u32 SecondaryCacheDefaultMaxEntriesCount = 4U;
+  static const uptr SecondaryCacheDefaultMaxEntrySize = 1UL << 18;
+  static const s32 SecondaryCacheMinReleaseToOsIntervalMs = 0;
+  static const s32 SecondaryCacheMaxReleaseToOsIntervalMs = 0;
+
+  template <class A>
+  using TSDRegistryT = TSDRegistrySharedT<A, 2U, 1U>; // Shared, max 2 TSDs.
+};
+
+#if SCUDO_CAN_USE_PRIMARY64
+struct FuchsiaConfig {
+  using SizeClassMap = FuchsiaSizeClassMap;
+  static const bool MaySupportMemoryTagging = false;
+
+  typedef SizeClassAllocator64<FuchsiaConfig> Primary;
+  static const uptr PrimaryRegionSizeLog = 30U;
+  typedef u32 PrimaryCompactPtrT;
+  static const bool PrimaryEnableRandomOffset = true;
+  static const uptr PrimaryMapSizeIncrement = 1UL << 18;
+  static const uptr PrimaryCompactPtrScale = SCUDO_MIN_ALIGNMENT_LOG;
+  static const s32 PrimaryMinReleaseToOsIntervalMs = INT32_MIN;
+  static const s32 PrimaryMaxReleaseToOsIntervalMs = INT32_MAX;
+
+  typedef MapAllocatorNoCache SecondaryCache;
+  template <class A>
+  using TSDRegistryT = TSDRegistrySharedT<A, 8U, 4U>; // Shared, max 8 TSDs.
+};
+
+struct TrustyConfig {
+  using SizeClassMap = TrustySizeClassMap;
+  static const bool MaySupportMemoryTagging = false;
+
+  typedef SizeClassAllocator64<TrustyConfig> Primary;
+  // Some apps have 1 page of heap total so small regions are necessary.
+  static const uptr PrimaryRegionSizeLog = 10U;
+  typedef u32 PrimaryCompactPtrT;
+  static const bool PrimaryEnableRandomOffset = false;
+  // Trusty is extremely memory-constrained so minimally round up map calls.
+  static const uptr PrimaryMapSizeIncrement = 1UL << 4;
+  static const uptr PrimaryCompactPtrScale = SCUDO_MIN_ALIGNMENT_LOG;
+  static const s32 PrimaryMinReleaseToOsIntervalMs = INT32_MIN;
+  static const s32 PrimaryMaxReleaseToOsIntervalMs = INT32_MAX;
+
+  typedef MapAllocatorNoCache SecondaryCache;
+  template <class A>
+  using TSDRegistryT = TSDRegistrySharedT<A, 1U, 1U>; // Shared, max 1 TSD.
+};
+#endif
+
+#if SCUDO_ANDROID
+typedef AndroidConfig Config;
+#elif SCUDO_FUCHSIA
+typedef FuchsiaConfig Config;
+#elif SCUDO_TRUSTY
+typedef TrustyConfig Config;
+#else
+typedef DefaultConfig Config;
+#endif
+
+} // namespace scudo
+
+#endif // SCUDO_ALLOCATOR_CONFIG_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/atomic_helpers.h b/contrib/libs/clang14-rt/lib/scudo/standalone/atomic_helpers.h
new file mode 100644
index 0000000000..d88f5d7be6
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/atomic_helpers.h
@@ -0,0 +1,145 @@
+//===-- atomic_helpers.h ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_ATOMIC_H_
+#define SCUDO_ATOMIC_H_
+
+#include "internal_defs.h"
+
+namespace scudo {
+
+enum memory_order {
+  memory_order_relaxed = 0,
+  memory_order_consume = 1,
+  memory_order_acquire = 2,
+  memory_order_release = 3,
+  memory_order_acq_rel = 4,
+  memory_order_seq_cst = 5
+};
+static_assert(memory_order_relaxed == __ATOMIC_RELAXED, "");
+static_assert(memory_order_consume == __ATOMIC_CONSUME, "");
+static_assert(memory_order_acquire == __ATOMIC_ACQUIRE, "");
+static_assert(memory_order_release == __ATOMIC_RELEASE, "");
+static_assert(memory_order_acq_rel == __ATOMIC_ACQ_REL, "");
+static_assert(memory_order_seq_cst == __ATOMIC_SEQ_CST, "");
+
+struct atomic_u8 {
+  typedef u8 Type;
+  volatile Type ValDoNotUse;
+};
+
+struct atomic_u16 {
+  typedef u16 Type;
+  volatile Type ValDoNotUse;
+};
+
+struct atomic_s32 {
+  typedef s32 Type;
+  volatile Type ValDoNotUse;
+};
+
+struct atomic_u32 {
+  typedef u32 Type;
+  volatile Type ValDoNotUse;
+};
+
+struct atomic_u64 {
+  typedef u64 Type;
+  // On 32-bit platforms u64 is not necessarily aligned on 8 bytes.
+  alignas(8) volatile Type ValDoNotUse;
+};
+
+struct atomic_uptr {
+  typedef uptr Type;
+  volatile Type ValDoNotUse;
+};
+
+template <typename T>
+inline typename T::Type atomic_load(const volatile T *A, memory_order MO) {
+  DCHECK(!(reinterpret_cast<uptr>(A) % sizeof(*A)));
+  typename T::Type V;
+  __atomic_load(&A->ValDoNotUse, &V, MO);
+  return V;
+}
+
+template <typename T>
+inline void atomic_store(volatile T *A, typename T::Type V, memory_order MO) {
+  DCHECK(!(reinterpret_cast<uptr>(A) % sizeof(*A)));
+  __atomic_store(&A->ValDoNotUse, &V, MO);
+}
+
+inline void atomic_thread_fence(memory_order) { __sync_synchronize(); }
+
+template <typename T>
+inline typename T::Type atomic_fetch_add(volatile T *A, typename T::Type V,
+                                         memory_order MO) {
+  DCHECK(!(reinterpret_cast<uptr>(A) % sizeof(*A)));
+  return __atomic_fetch_add(&A->ValDoNotUse, V, MO);
+}
+
+template <typename T>
+inline typename T::Type atomic_fetch_sub(volatile T *A, typename T::Type V,
+                                         memory_order MO) {
+  DCHECK(!(reinterpret_cast<uptr>(A) % sizeof(*A)));
+  return __atomic_fetch_sub(&A->ValDoNotUse, V, MO);
+}
+
+template <typename T>
+inline typename T::Type atomic_fetch_and(volatile T *A, typename T::Type V,
+                                         memory_order MO) {
+  DCHECK(!(reinterpret_cast<uptr>(A) % sizeof(*A)));
+  return __atomic_fetch_and(&A->ValDoNotUse, V, MO);
+}
+
+template <typename T>
+inline typename T::Type atomic_fetch_or(volatile T *A, typename T::Type V,
+                                        memory_order MO) {
+  DCHECK(!(reinterpret_cast<uptr>(A) % sizeof(*A)));
+  return __atomic_fetch_or(&A->ValDoNotUse, V, MO);
+}
+
+template <typename T>
+inline typename T::Type atomic_exchange(volatile T *A, typename T::Type V,
+                                        memory_order MO) {
+  DCHECK(!(reinterpret_cast<uptr>(A) % sizeof(*A)));
+  typename T::Type R;
+  __atomic_exchange(&A->ValDoNotUse, &V, &R, MO);
+  return R;
+}
+
+template <typename T>
+inline bool atomic_compare_exchange_strong(volatile T *A, typename T::Type *Cmp,
+                                           typename T::Type Xchg,
+                                           memory_order MO) {
+  return __atomic_compare_exchange(&A->ValDoNotUse, Cmp, &Xchg, false, MO,
+                                   __ATOMIC_RELAXED);
+}
+
+// Clutter-reducing helpers.
+
+template <typename T>
+inline typename T::Type atomic_load_relaxed(const volatile T *A) {
+  return atomic_load(A, memory_order_relaxed);
+}
+
+template <typename T>
+inline void atomic_store_relaxed(volatile T *A, typename T::Type V) {
+  atomic_store(A, V, memory_order_relaxed);
+}
+
+template <typename T>
+inline typename T::Type atomic_compare_exchange(volatile T *A,
+                                                typename T::Type Cmp,
+                                                typename T::Type Xchg) {
+  atomic_compare_exchange_strong(A, &Cmp, Xchg, memory_order_acquire);
+  return Cmp;
+}
+
+} // namespace scudo
+
+#endif // SCUDO_ATOMIC_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/bytemap.h b/contrib/libs/clang14-rt/lib/scudo/standalone/bytemap.h
new file mode 100644
index 0000000000..248e096d07
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/bytemap.h
@@ -0,0 +1,43 @@
+//===-- bytemap.h -----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_BYTEMAP_H_
+#define SCUDO_BYTEMAP_H_
+
+#include "atomic_helpers.h"
+#include "common.h"
+#include "mutex.h"
+
+namespace scudo {
+
+template <uptr Size> class FlatByteMap {
+public:
+  void init() { DCHECK(Size == 0 || Map[0] == 0); }
+
+  void unmapTestOnly() { memset(Map, 0, Size); }
+
+  void set(uptr Index, u8 Value) {
+    DCHECK_LT(Index, Size);
+    DCHECK_EQ(0U, Map[Index]);
+    Map[Index] = Value;
+  }
+  u8 operator[](uptr Index) {
+    DCHECK_LT(Index, Size);
+    return Map[Index];
+  }
+
+  void disable() {}
+  void enable() {}
+
+private:
+  u8 Map[Size] = {};
+};
+
+} // namespace scudo
+
+#endif // SCUDO_BYTEMAP_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/checksum.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/checksum.cpp
new file mode 100644
index 0000000000..5f2e2f3537
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/checksum.cpp
@@ -0,0 +1,82 @@
+//===-- checksum.cpp --------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "checksum.h"
+#include "atomic_helpers.h"
+
+#if defined(__x86_64__) || defined(__i386__)
+#include <cpuid.h>
+#elif defined(__arm__) || defined(__aarch64__)
+#if SCUDO_FUCHSIA
+#error #include <zircon/features.h>
+#error #include <zircon/syscalls.h>
+#else
+#include <sys/auxv.h>
+#endif
+#endif
+
+namespace scudo {
+
+Checksum HashAlgorithm = {Checksum::BSD};
+
+#if defined(__x86_64__) || defined(__i386__)
+// i386 and x86_64 specific code to detect CRC32 hardware support via CPUID.
+// CRC32 requires the SSE 4.2 instruction set.
+#ifndef bit_SSE4_2
+#define bit_SSE4_2 bit_SSE42 // clang and gcc have different defines.
+#endif
+
+#ifndef signature_HYGON_ebx // They are not defined in gcc.
+// HYGON: "HygonGenuine".
+#define signature_HYGON_ebx 0x6f677948
+#define signature_HYGON_edx 0x6e65476e
+#define signature_HYGON_ecx 0x656e6975
+#endif
+
+bool hasHardwareCRC32() {
+  u32 Eax, Ebx = 0, Ecx = 0, Edx = 0;
+  __get_cpuid(0, &Eax, &Ebx, &Ecx, &Edx);
+  const bool IsIntel = (Ebx == signature_INTEL_ebx) &&
+                       (Edx == signature_INTEL_edx) &&
+                       (Ecx == signature_INTEL_ecx);
+  const bool IsAMD = (Ebx == signature_AMD_ebx) && (Edx == signature_AMD_edx) &&
+                     (Ecx == signature_AMD_ecx);
+  const bool IsHygon = (Ebx == signature_HYGON_ebx) &&
+                       (Edx == signature_HYGON_edx) &&
+                       (Ecx == signature_HYGON_ecx);
+  if (!IsIntel && !IsAMD && !IsHygon)
+    return false;
+  __get_cpuid(1, &Eax, &Ebx, &Ecx, &Edx);
+  return !!(Ecx & bit_SSE4_2);
+}
+#elif defined(__arm__) || defined(__aarch64__)
+#ifndef AT_HWCAP
+#define AT_HWCAP 16
+#endif
+#ifndef HWCAP_CRC32
+#define HWCAP_CRC32 (1U << 7) // HWCAP_CRC32 is missing on older platforms.
+#endif
+
+bool hasHardwareCRC32() {
+#if SCUDO_FUCHSIA
+  u32 HWCap;
+  const zx_status_t Status =
+      zx_system_get_features(ZX_FEATURE_KIND_CPU, &HWCap);
+  if (Status != ZX_OK)
+    return false;
+  return !!(HWCap & ZX_ARM64_FEATURE_ISA_CRC32);
+#else
+  return !!(getauxval(AT_HWCAP) & HWCAP_CRC32);
+#endif // SCUDO_FUCHSIA
+}
+#else
+// No hardware CRC32 implemented in Scudo for other architectures.
+bool hasHardwareCRC32() { return false; }
+#endif // defined(__x86_64__) || defined(__i386__)
+
+} // namespace scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/checksum.h b/contrib/libs/clang14-rt/lib/scudo/standalone/checksum.h
new file mode 100644
index 0000000000..0f787ce2b5
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/checksum.h
@@ -0,0 +1,58 @@
+//===-- checksum.h ----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_CHECKSUM_H_
+#define SCUDO_CHECKSUM_H_
+
+#include "internal_defs.h"
+
+// Hardware CRC32 is supported at compilation via the following:
+// - for i386 & x86_64: -mcrc32 (earlier: -msse4.2)
+// - for ARM & AArch64: -march=armv8-a+crc or -mcrc
+// An additional check must be performed at runtime as well to make sure the
+// emitted instructions are valid on the target host.
+
+#if defined(__CRC32__)
+// NB: clang has <crc32intrin.h> but GCC does not
+#include <smmintrin.h>
+#define CRC32_INTRINSIC FIRST_32_SECOND_64(__builtin_ia32_crc32si, __builtin_ia32_crc32di)
+#elif defined(__SSE4_2__)
+#include <smmintrin.h>
+#define CRC32_INTRINSIC FIRST_32_SECOND_64(_mm_crc32_u32, _mm_crc32_u64)
+#endif
+#ifdef __ARM_FEATURE_CRC32
+#include <arm_acle.h>
+#define CRC32_INTRINSIC FIRST_32_SECOND_64(__crc32cw, __crc32cd)
+#endif
+
+namespace scudo {
+
+enum class Checksum : u8 {
+  BSD = 0,
+  HardwareCRC32 = 1,
+};
+
+// BSD checksum, unlike a software CRC32, doesn't use any array lookup. We save
+// significantly on memory accesses, as well as 1K of CRC32 table, on platforms
+// that do no support hardware CRC32. The checksum itself is 16-bit, which is at
+// odds with CRC32, but enough for our needs.
+inline u16 computeBSDChecksum(u16 Sum, uptr Data) {
+  for (u8 I = 0; I < sizeof(Data); I++) {
+    Sum = static_cast<u16>((Sum >> 1) | ((Sum & 1) << 15));
+    Sum = static_cast<u16>(Sum + (Data & 0xff));
+    Data >>= 8;
+  }
+  return Sum;
+}
+
+bool hasHardwareCRC32();
+WEAK u32 computeHardwareCRC32(u32 Crc, uptr Data);
+
+} // namespace scudo
+
+#endif // SCUDO_CHECKSUM_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/chunk.h b/contrib/libs/clang14-rt/lib/scudo/standalone/chunk.h
new file mode 100644
index 0000000000..0581420dfc
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/chunk.h
@@ -0,0 +1,155 @@
+//===-- chunk.h -------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_CHUNK_H_
+#define SCUDO_CHUNK_H_
+
+#include "platform.h"
+
+#include "atomic_helpers.h"
+#include "checksum.h"
+#include "common.h"
+#include "report.h"
+
+namespace scudo {
+
+extern Checksum HashAlgorithm;
+
+inline u16 computeChecksum(u32 Seed, uptr Value, uptr *Array, uptr ArraySize) {
+  // If the hardware CRC32 feature is defined here, it was enabled everywhere,
+  // as opposed to only for crc32_hw.cpp. This means that other hardware
+  // specific instructions were likely emitted at other places, and as a result
+  // there is no reason to not use it here.
+#if defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+  u32 Crc = static_cast<u32>(CRC32_INTRINSIC(Seed, Value));
+  for (uptr I = 0; I < ArraySize; I++)
+    Crc = static_cast<u32>(CRC32_INTRINSIC(Crc, Array[I]));
+  return static_cast<u16>(Crc ^ (Crc >> 16));
+#else
+  if (HashAlgorithm == Checksum::HardwareCRC32) {
+    u32 Crc = computeHardwareCRC32(Seed, Value);
+    for (uptr I = 0; I < ArraySize; I++)
+      Crc = computeHardwareCRC32(Crc, Array[I]);
+    return static_cast<u16>(Crc ^ (Crc >> 16));
+  } else {
+    u16 Checksum = computeBSDChecksum(static_cast<u16>(Seed), Value);
+    for (uptr I = 0; I < ArraySize; I++)
+      Checksum = computeBSDChecksum(Checksum, Array[I]);
+    return Checksum;
+  }
+#endif // defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+}
+
+namespace Chunk {
+
+// Note that in an ideal world, `State` and `Origin` should be `enum class`, and
+// the associated `UnpackedHeader` fields of their respective enum class type
+// but https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414 prevents it from
+// happening, as it will error, complaining the number of bits is not enough.
+enum Origin : u8 {
+  Malloc = 0,
+  New = 1,
+  NewArray = 2,
+  Memalign = 3,
+};
+
+enum State : u8 { Available = 0, Allocated = 1, Quarantined = 2 };
+
+typedef u64 PackedHeader;
+// Update the 'Mask' constants to reflect changes in this structure.
+struct UnpackedHeader {
+  uptr ClassId : 8;
+  u8 State : 2;
+  // Origin if State == Allocated, or WasZeroed otherwise.
+  u8 OriginOrWasZeroed : 2;
+  uptr SizeOrUnusedBytes : 20;
+  uptr Offset : 16;
+  uptr Checksum : 16;
+};
+typedef atomic_u64 AtomicPackedHeader;
+static_assert(sizeof(UnpackedHeader) == sizeof(PackedHeader), "");
+
+// Those constants are required to silence some -Werror=conversion errors when
+// assigning values to the related bitfield variables.
+constexpr uptr ClassIdMask = (1UL << 8) - 1;
+constexpr u8 StateMask = (1U << 2) - 1;
+constexpr u8 OriginMask = (1U << 2) - 1;
+constexpr uptr SizeOrUnusedBytesMask = (1UL << 20) - 1;
+constexpr uptr OffsetMask = (1UL << 16) - 1;
+constexpr uptr ChecksumMask = (1UL << 16) - 1;
+
+constexpr uptr getHeaderSize() {
+  return roundUpTo(sizeof(PackedHeader), 1U << SCUDO_MIN_ALIGNMENT_LOG);
+}
+
+inline AtomicPackedHeader *getAtomicHeader(void *Ptr) {
+  return reinterpret_cast<AtomicPackedHeader *>(reinterpret_cast<uptr>(Ptr) -
+                                                getHeaderSize());
+}
+
+inline const AtomicPackedHeader *getConstAtomicHeader(const void *Ptr) {
+  return reinterpret_cast<const AtomicPackedHeader *>(
+      reinterpret_cast<uptr>(Ptr) - getHeaderSize());
+}
+
+// We do not need a cryptographically strong hash for the checksum, but a CRC
+// type function that can alert us in the event a header is invalid or
+// corrupted. Ideally slightly better than a simple xor of all fields.
+static inline u16 computeHeaderChecksum(u32 Cookie, const void *Ptr,
+                                        UnpackedHeader *Header) {
+  UnpackedHeader ZeroChecksumHeader = *Header;
+  ZeroChecksumHeader.Checksum = 0;
+  uptr HeaderHolder[sizeof(UnpackedHeader) / sizeof(uptr)];
+  memcpy(&HeaderHolder, &ZeroChecksumHeader, sizeof(HeaderHolder));
+  return computeChecksum(Cookie, reinterpret_cast<uptr>(Ptr), HeaderHolder,
+                         ARRAY_SIZE(HeaderHolder));
+}
+
+inline void storeHeader(u32 Cookie, void *Ptr,
+                        UnpackedHeader *NewUnpackedHeader) {
+  NewUnpackedHeader->Checksum =
+      computeHeaderChecksum(Cookie, Ptr, NewUnpackedHeader);
+  PackedHeader NewPackedHeader = bit_cast<PackedHeader>(*NewUnpackedHeader);
+  atomic_store_relaxed(getAtomicHeader(Ptr), NewPackedHeader);
+}
+
+inline void loadHeader(u32 Cookie, const void *Ptr,
+                       UnpackedHeader *NewUnpackedHeader) {
+  PackedHeader NewPackedHeader = atomic_load_relaxed(getConstAtomicHeader(Ptr));
+  *NewUnpackedHeader = bit_cast<UnpackedHeader>(NewPackedHeader);
+  if (UNLIKELY(NewUnpackedHeader->Checksum !=
+               computeHeaderChecksum(Cookie, Ptr, NewUnpackedHeader)))
+    reportHeaderCorruption(const_cast<void *>(Ptr));
+}
+
+inline void compareExchangeHeader(u32 Cookie, void *Ptr,
+                                  UnpackedHeader *NewUnpackedHeader,
+                                  UnpackedHeader *OldUnpackedHeader) {
+  NewUnpackedHeader->Checksum =
+      computeHeaderChecksum(Cookie, Ptr, NewUnpackedHeader);
+  PackedHeader NewPackedHeader = bit_cast<PackedHeader>(*NewUnpackedHeader);
+  PackedHeader OldPackedHeader = bit_cast<PackedHeader>(*OldUnpackedHeader);
+  if (UNLIKELY(!atomic_compare_exchange_strong(
+          getAtomicHeader(Ptr), &OldPackedHeader, NewPackedHeader,
+          memory_order_relaxed)))
+    reportHeaderRace(Ptr);
+}
+
+inline bool isValid(u32 Cookie, const void *Ptr,
+                    UnpackedHeader *NewUnpackedHeader) {
+  PackedHeader NewPackedHeader = atomic_load_relaxed(getConstAtomicHeader(Ptr));
+  *NewUnpackedHeader = bit_cast<UnpackedHeader>(NewPackedHeader);
+  return NewUnpackedHeader->Checksum ==
+         computeHeaderChecksum(Cookie, Ptr, NewUnpackedHeader);
+}
+
+} // namespace Chunk
+
+} // namespace scudo
+
+#endif // SCUDO_CHUNK_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/combined.h b/contrib/libs/clang14-rt/lib/scudo/standalone/combined.h
new file mode 100644
index 0000000000..371fb783a0
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/combined.h
@@ -0,0 +1,1440 @@
+//===-- combined.h ----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_COMBINED_H_
+#define SCUDO_COMBINED_H_
+
+#include "chunk.h"
+#include "common.h"
+#include "flags.h"
+#include "flags_parser.h"
+#include "local_cache.h"
+#include "memtag.h"
+#include "options.h"
+#include "quarantine.h"
+#include "report.h"
+#include "secondary.h"
+#include "stack_depot.h"
+#include "string_utils.h"
+#include "tsd.h"
+
+#include "scudo/interface.h"
+
+#ifdef GWP_ASAN_HOOKS
+#include "gwp_asan/guarded_pool_allocator.h"
+#include "gwp_asan/optional/backtrace.h"
+#include "gwp_asan/optional/segv_handler.h"
+#endif // GWP_ASAN_HOOKS
+
+extern "C" inline void EmptyCallback() {}
+
+#ifdef HAVE_ANDROID_UNSAFE_FRAME_POINTER_CHASE
+// This function is not part of the NDK so it does not appear in any public
+// header files. We only declare/use it when targeting the platform.
+extern "C" size_t android_unsafe_frame_pointer_chase(scudo::uptr *buf,
+                                                     size_t num_entries);
+#endif
+
+namespace scudo {
+
+template <class Params, void (*PostInitCallback)(void) = EmptyCallback>
+class Allocator {
+public:
+  using PrimaryT = typename Params::Primary;
+  using CacheT = typename PrimaryT::CacheT;
+  typedef Allocator<Params, PostInitCallback> ThisT;
+  typedef typename Params::template TSDRegistryT<ThisT> TSDRegistryT;
+
+  void callPostInitCallback() {
+    pthread_once(&PostInitNonce, PostInitCallback);
+  }
+
+  struct QuarantineCallback {
+    explicit QuarantineCallback(ThisT &Instance, CacheT &LocalCache)
+        : Allocator(Instance), Cache(LocalCache) {}
+
+    // Chunk recycling function, returns a quarantined chunk to the backend,
+    // first making sure it hasn't been tampered with.
+    void recycle(void *Ptr) {
+      Chunk::UnpackedHeader Header;
+      Chunk::loadHeader(Allocator.Cookie, Ptr, &Header);
+      if (UNLIKELY(Header.State != Chunk::State::Quarantined))
+        reportInvalidChunkState(AllocatorAction::Recycling, Ptr);
+
+      Chunk::UnpackedHeader NewHeader = Header;
+      NewHeader.State = Chunk::State::Available;
+      Chunk::compareExchangeHeader(Allocator.Cookie, Ptr, &NewHeader, &Header);
+
+      if (allocatorSupportsMemoryTagging<Params>())
+        Ptr = untagPointer(Ptr);
+      void *BlockBegin = Allocator::getBlockBegin(Ptr, &NewHeader);
+      Cache.deallocate(NewHeader.ClassId, BlockBegin);
+    }
+
+    // We take a shortcut when allocating a quarantine batch by working with the
+    // appropriate class ID instead of using Size. The compiler should optimize
+    // the class ID computation and work with the associated cache directly.
+    void *allocate(UNUSED uptr Size) {
+      const uptr QuarantineClassId = SizeClassMap::getClassIdBySize(
+          sizeof(QuarantineBatch) + Chunk::getHeaderSize());
+      void *Ptr = Cache.allocate(QuarantineClassId);
+      // Quarantine batch allocation failure is fatal.
+      if (UNLIKELY(!Ptr))
+        reportOutOfMemory(SizeClassMap::getSizeByClassId(QuarantineClassId));
+
+      Ptr = reinterpret_cast<void *>(reinterpret_cast<uptr>(Ptr) +
+                                     Chunk::getHeaderSize());
+      Chunk::UnpackedHeader Header = {};
+      Header.ClassId = QuarantineClassId & Chunk::ClassIdMask;
+      Header.SizeOrUnusedBytes = sizeof(QuarantineBatch);
+      Header.State = Chunk::State::Allocated;
+      Chunk::storeHeader(Allocator.Cookie, Ptr, &Header);
+
+      // Reset tag to 0 as this chunk may have been previously used for a tagged
+      // user allocation.
+      if (UNLIKELY(useMemoryTagging<Params>(Allocator.Primary.Options.load())))
+        storeTags(reinterpret_cast<uptr>(Ptr),
+                  reinterpret_cast<uptr>(Ptr) + sizeof(QuarantineBatch));
+
+      return Ptr;
+    }
+
+    void deallocate(void *Ptr) {
+      const uptr QuarantineClassId = SizeClassMap::getClassIdBySize(
+          sizeof(QuarantineBatch) + Chunk::getHeaderSize());
+      Chunk::UnpackedHeader Header;
+      Chunk::loadHeader(Allocator.Cookie, Ptr, &Header);
+
+      if (UNLIKELY(Header.State != Chunk::State::Allocated))
+        reportInvalidChunkState(AllocatorAction::Deallocating, Ptr);
+      DCHECK_EQ(Header.ClassId, QuarantineClassId);
+      DCHECK_EQ(Header.Offset, 0);
+      DCHECK_EQ(Header.SizeOrUnusedBytes, sizeof(QuarantineBatch));
+
+      Chunk::UnpackedHeader NewHeader = Header;
+      NewHeader.State = Chunk::State::Available;
+      Chunk::compareExchangeHeader(Allocator.Cookie, Ptr, &NewHeader, &Header);
+      Cache.deallocate(QuarantineClassId,
+                       reinterpret_cast<void *>(reinterpret_cast<uptr>(Ptr) -
+                                                Chunk::getHeaderSize()));
+    }
+
+  private:
+    ThisT &Allocator;
+    CacheT &Cache;
+  };
+
+  typedef GlobalQuarantine<QuarantineCallback, void> QuarantineT;
+  typedef typename QuarantineT::CacheT QuarantineCacheT;
+
+  void init() {
+    performSanityChecks();
+
+    // Check if hardware CRC32 is supported in the binary and by the platform,
+    // if so, opt for the CRC32 hardware version of the checksum.
+    if (&computeHardwareCRC32 && hasHardwareCRC32())
+      HashAlgorithm = Checksum::HardwareCRC32;
+
+    if (UNLIKELY(!getRandom(&Cookie, sizeof(Cookie))))
+      Cookie = static_cast<u32>(getMonotonicTime() ^
+                                (reinterpret_cast<uptr>(this) >> 4));
+
+    initFlags();
+    reportUnrecognizedFlags();
+
+    // Store some flags locally.
+    if (getFlags()->may_return_null)
+      Primary.Options.set(OptionBit::MayReturnNull);
+    if (getFlags()->zero_contents)
+      Primary.Options.setFillContentsMode(ZeroFill);
+    else if (getFlags()->pattern_fill_contents)
+      Primary.Options.setFillContentsMode(PatternOrZeroFill);
+    if (getFlags()->dealloc_type_mismatch)
+      Primary.Options.set(OptionBit::DeallocTypeMismatch);
+    if (getFlags()->delete_size_mismatch)
+      Primary.Options.set(OptionBit::DeleteSizeMismatch);
+    if (allocatorSupportsMemoryTagging<Params>() &&
+        systemSupportsMemoryTagging())
+      Primary.Options.set(OptionBit::UseMemoryTagging);
+    Primary.Options.set(OptionBit::UseOddEvenTags);
+
+    QuarantineMaxChunkSize =
+        static_cast<u32>(getFlags()->quarantine_max_chunk_size);
+
+    Stats.init();
+    const s32 ReleaseToOsIntervalMs = getFlags()->release_to_os_interval_ms;
+    Primary.init(ReleaseToOsIntervalMs);
+    Secondary.init(&Stats, ReleaseToOsIntervalMs);
+    Quarantine.init(
+        static_cast<uptr>(getFlags()->quarantine_size_kb << 10),
+        static_cast<uptr>(getFlags()->thread_local_quarantine_size_kb << 10));
+  }
+
+  // Initialize the embedded GWP-ASan instance. Requires the main allocator to
+  // be functional, best called from PostInitCallback.
+  void initGwpAsan() {
+#ifdef GWP_ASAN_HOOKS
+    gwp_asan::options::Options Opt;
+    Opt.Enabled = getFlags()->GWP_ASAN_Enabled;
+    Opt.MaxSimultaneousAllocations =
+        getFlags()->GWP_ASAN_MaxSimultaneousAllocations;
+    Opt.SampleRate = getFlags()->GWP_ASAN_SampleRate;
+    Opt.InstallSignalHandlers = getFlags()->GWP_ASAN_InstallSignalHandlers;
+    // Embedded GWP-ASan is locked through the Scudo atfork handler (via
+    // Allocator::disable calling GWPASan.disable). Disable GWP-ASan's atfork
+    // handler.
+    Opt.InstallForkHandlers = false;
+    Opt.Backtrace = gwp_asan::backtrace::getBacktraceFunction();
+    GuardedAlloc.init(Opt);
+
+    if (Opt.InstallSignalHandlers)
+      gwp_asan::segv_handler::installSignalHandlers(
+          &GuardedAlloc, Printf,
+          gwp_asan::backtrace::getPrintBacktraceFunction(),
+          gwp_asan::backtrace::getSegvBacktraceFunction());
+
+    GuardedAllocSlotSize =
+        GuardedAlloc.getAllocatorState()->maximumAllocationSize();
+    Stats.add(StatFree, static_cast<uptr>(Opt.MaxSimultaneousAllocations) *
+                            GuardedAllocSlotSize);
+#endif // GWP_ASAN_HOOKS
+  }
+
+#ifdef GWP_ASAN_HOOKS
+  const gwp_asan::AllocationMetadata *getGwpAsanAllocationMetadata() {
+    return GuardedAlloc.getMetadataRegion();
+  }
+
+  const gwp_asan::AllocatorState *getGwpAsanAllocatorState() {
+    return GuardedAlloc.getAllocatorState();
+  }
+#endif // GWP_ASAN_HOOKS
+
+  ALWAYS_INLINE void initThreadMaybe(bool MinimalInit = false) {
+    TSDRegistry.initThreadMaybe(this, MinimalInit);
+  }
+
+  void unmapTestOnly() {
+    TSDRegistry.unmapTestOnly(this);
+    Primary.unmapTestOnly();
+    Secondary.unmapTestOnly();
+#ifdef GWP_ASAN_HOOKS
+    if (getFlags()->GWP_ASAN_InstallSignalHandlers)
+      gwp_asan::segv_handler::uninstallSignalHandlers();
+    GuardedAlloc.uninitTestOnly();
+#endif // GWP_ASAN_HOOKS
+  }
+
+  TSDRegistryT *getTSDRegistry() { return &TSDRegistry; }
+
+  // The Cache must be provided zero-initialized.
+  void initCache(CacheT *Cache) { Cache->init(&Stats, &Primary); }
+
+  // Release the resources used by a TSD, which involves:
+  // - draining the local quarantine cache to the global quarantine;
+  // - releasing the cached pointers back to the Primary;
+  // - unlinking the local stats from the global ones (destroying the cache does
+  //   the last two items).
+  void commitBack(TSD<ThisT> *TSD) {
+    Quarantine.drain(&TSD->QuarantineCache,
+                     QuarantineCallback(*this, TSD->Cache));
+    TSD->Cache.destroy(&Stats);
+  }
+
+  ALWAYS_INLINE void *getHeaderTaggedPointer(void *Ptr) {
+    if (!allocatorSupportsMemoryTagging<Params>())
+      return Ptr;
+    auto UntaggedPtr = untagPointer(Ptr);
+    if (UntaggedPtr != Ptr)
+      return UntaggedPtr;
+    // Secondary, or pointer allocated while memory tagging is unsupported or
+    // disabled. The tag mismatch is okay in the latter case because tags will
+    // not be checked.
+    return addHeaderTag(Ptr);
+  }
+
+  ALWAYS_INLINE uptr addHeaderTag(uptr Ptr) {
+    if (!allocatorSupportsMemoryTagging<Params>())
+      return Ptr;
+    return addFixedTag(Ptr, 2);
+  }
+
+  ALWAYS_INLINE void *addHeaderTag(void *Ptr) {
+    return reinterpret_cast<void *>(addHeaderTag(reinterpret_cast<uptr>(Ptr)));
+  }
+
+  NOINLINE u32 collectStackTrace() {
+#ifdef HAVE_ANDROID_UNSAFE_FRAME_POINTER_CHASE
+    // Discard collectStackTrace() frame and allocator function frame.
+    constexpr uptr DiscardFrames = 2;
+    uptr Stack[MaxTraceSize + DiscardFrames];
+    uptr Size =
+        android_unsafe_frame_pointer_chase(Stack, MaxTraceSize + DiscardFrames);
+    Size = Min<uptr>(Size, MaxTraceSize + DiscardFrames);
+    return Depot.insert(Stack + Min<uptr>(DiscardFrames, Size), Stack + Size);
+#else
+    return 0;
+#endif
+  }
+
+  uptr computeOddEvenMaskForPointerMaybe(Options Options, uptr Ptr,
+                                         uptr ClassId) {
+    if (!Options.get(OptionBit::UseOddEvenTags))
+      return 0;
+
+    // If a chunk's tag is odd, we want the tags of the surrounding blocks to be
+    // even, and vice versa. Blocks are laid out Size bytes apart, and adding
+    // Size to Ptr will flip the least significant set bit of Size in Ptr, so
+    // that bit will have the pattern 010101... for consecutive blocks, which we
+    // can use to determine which tag mask to use.
+    return 0x5555U << ((Ptr >> SizeClassMap::getSizeLSBByClassId(ClassId)) & 1);
+  }
+
+  NOINLINE void *allocate(uptr Size, Chunk::Origin Origin,
+                          uptr Alignment = MinAlignment,
+                          bool ZeroContents = false) {
+    initThreadMaybe();
+
+    const Options Options = Primary.Options.load();
+    if (UNLIKELY(Alignment > MaxAlignment)) {
+      if (Options.get(OptionBit::MayReturnNull))
+        return nullptr;
+      reportAlignmentTooBig(Alignment, MaxAlignment);
+    }
+    if (Alignment < MinAlignment)
+      Alignment = MinAlignment;
+
+#ifdef GWP_ASAN_HOOKS
+    if (UNLIKELY(GuardedAlloc.shouldSample())) {
+      if (void *Ptr = GuardedAlloc.allocate(Size, Alignment)) {
+        if (UNLIKELY(&__scudo_allocate_hook))
+          __scudo_allocate_hook(Ptr, Size);
+        Stats.lock();
+        Stats.add(StatAllocated, GuardedAllocSlotSize);
+        Stats.sub(StatFree, GuardedAllocSlotSize);
+        Stats.unlock();
+        return Ptr;
+      }
+    }
+#endif // GWP_ASAN_HOOKS
+
+    const FillContentsMode FillContents = ZeroContents ? ZeroFill
+                                          : TSDRegistry.getDisableMemInit()
+                                              ? NoFill
+                                              : Options.getFillContentsMode();
+
+    // If the requested size happens to be 0 (more common than you might think),
+    // allocate MinAlignment bytes on top of the header. Then add the extra
+    // bytes required to fulfill the alignment requirements: we allocate enough
+    // to be sure that there will be an address in the block that will satisfy
+    // the alignment.
+    const uptr NeededSize =
+        roundUpTo(Size, MinAlignment) +
+        ((Alignment > MinAlignment) ? Alignment : Chunk::getHeaderSize());
+
+    // Takes care of extravagantly large sizes as well as integer overflows.
+    static_assert(MaxAllowedMallocSize < UINTPTR_MAX - MaxAlignment, "");
+    if (UNLIKELY(Size >= MaxAllowedMallocSize)) {
+      if (Options.get(OptionBit::MayReturnNull))
+        return nullptr;
+      reportAllocationSizeTooBig(Size, NeededSize, MaxAllowedMallocSize);
+    }
+    DCHECK_LE(Size, NeededSize);
+
+    void *Block = nullptr;
+    uptr ClassId = 0;
+    uptr SecondaryBlockEnd = 0;
+    if (LIKELY(PrimaryT::canAllocate(NeededSize))) {
+      ClassId = SizeClassMap::getClassIdBySize(NeededSize);
+      DCHECK_NE(ClassId, 0U);
+      bool UnlockRequired;
+      auto *TSD = TSDRegistry.getTSDAndLock(&UnlockRequired);
+      Block = TSD->Cache.allocate(ClassId);
+      // If the allocation failed, the most likely reason with a 32-bit primary
+      // is the region being full. In that event, retry in each successively
+      // larger class until it fits. If it fails to fit in the largest class,
+      // fallback to the Secondary.
+      if (UNLIKELY(!Block)) {
+        while (ClassId < SizeClassMap::LargestClassId && !Block)
+          Block = TSD->Cache.allocate(++ClassId);
+        if (!Block)
+          ClassId = 0;
+      }
+      if (UnlockRequired)
+        TSD->unlock();
+    }
+    if (UNLIKELY(ClassId == 0))
+      Block = Secondary.allocate(Options, Size, Alignment, &SecondaryBlockEnd,
+                                 FillContents);
+
+    if (UNLIKELY(!Block)) {
+      if (Options.get(OptionBit::MayReturnNull))
+        return nullptr;
+      reportOutOfMemory(NeededSize);
+    }
+
+    const uptr BlockUptr = reinterpret_cast<uptr>(Block);
+    const uptr UnalignedUserPtr = BlockUptr + Chunk::getHeaderSize();
+    const uptr UserPtr = roundUpTo(UnalignedUserPtr, Alignment);
+
+    void *Ptr = reinterpret_cast<void *>(UserPtr);
+    void *TaggedPtr = Ptr;
+    if (LIKELY(ClassId)) {
+      // We only need to zero or tag the contents for Primary backed
+      // allocations. We only set tags for primary allocations in order to avoid
+      // faulting potentially large numbers of pages for large secondary
+      // allocations. We assume that guard pages are enough to protect these
+      // allocations.
+      //
+      // FIXME: When the kernel provides a way to set the background tag of a
+      // mapping, we should be able to tag secondary allocations as well.
+      //
+      // When memory tagging is enabled, zeroing the contents is done as part of
+      // setting the tag.
+      if (UNLIKELY(useMemoryTagging<Params>(Options))) {
+        uptr PrevUserPtr;
+        Chunk::UnpackedHeader Header;
+        const uptr BlockSize = PrimaryT::getSizeByClassId(ClassId);
+        const uptr BlockEnd = BlockUptr + BlockSize;
+        // If possible, try to reuse the UAF tag that was set by deallocate().
+        // For simplicity, only reuse tags if we have the same start address as
+        // the previous allocation. This handles the majority of cases since
+        // most allocations will not be more aligned than the minimum alignment.
+        //
+        // We need to handle situations involving reclaimed chunks, and retag
+        // the reclaimed portions if necessary. In the case where the chunk is
+        // fully reclaimed, the chunk's header will be zero, which will trigger
+        // the code path for new mappings and invalid chunks that prepares the
+        // chunk from scratch. There are three possibilities for partial
+        // reclaiming:
+        //
+        // (1) Header was reclaimed, data was partially reclaimed.
+        // (2) Header was not reclaimed, all data was reclaimed (e.g. because
+        //     data started on a page boundary).
+        // (3) Header was not reclaimed, data was partially reclaimed.
+        //
+        // Case (1) will be handled in the same way as for full reclaiming,
+        // since the header will be zero.
+        //
+        // We can detect case (2) by loading the tag from the start
+        // of the chunk. If it is zero, it means that either all data was
+        // reclaimed (since we never use zero as the chunk tag), or that the
+        // previous allocation was of size zero. Either way, we need to prepare
+        // a new chunk from scratch.
+        //
+        // We can detect case (3) by moving to the next page (if covered by the
+        // chunk) and loading the tag of its first granule. If it is zero, it
+        // means that all following pages may need to be retagged. On the other
+        // hand, if it is nonzero, we can assume that all following pages are
+        // still tagged, according to the logic that if any of the pages
+        // following the next page were reclaimed, the next page would have been
+        // reclaimed as well.
+        uptr TaggedUserPtr;
+        if (getChunkFromBlock(BlockUptr, &PrevUserPtr, &Header) &&
+            PrevUserPtr == UserPtr &&
+            (TaggedUserPtr = loadTag(UserPtr)) != UserPtr) {
+          uptr PrevEnd = TaggedUserPtr + Header.SizeOrUnusedBytes;
+          const uptr NextPage = roundUpTo(TaggedUserPtr, getPageSizeCached());
+          if (NextPage < PrevEnd && loadTag(NextPage) != NextPage)
+            PrevEnd = NextPage;
+          TaggedPtr = reinterpret_cast<void *>(TaggedUserPtr);
+          resizeTaggedChunk(PrevEnd, TaggedUserPtr + Size, Size, BlockEnd);
+          if (UNLIKELY(FillContents != NoFill && !Header.OriginOrWasZeroed)) {
+            // If an allocation needs to be zeroed (i.e. calloc) we can normally
+            // avoid zeroing the memory now since we can rely on memory having
+            // been zeroed on free, as this is normally done while setting the
+            // UAF tag. But if tagging was disabled per-thread when the memory
+            // was freed, it would not have been retagged and thus zeroed, and
+            // therefore it needs to be zeroed now.
+            memset(TaggedPtr, 0,
+                   Min(Size, roundUpTo(PrevEnd - TaggedUserPtr,
+                                       archMemoryTagGranuleSize())));
+          } else if (Size) {
+            // Clear any stack metadata that may have previously been stored in
+            // the chunk data.
+            memset(TaggedPtr, 0, archMemoryTagGranuleSize());
+          }
+        } else {
+          const uptr OddEvenMask =
+              computeOddEvenMaskForPointerMaybe(Options, BlockUptr, ClassId);
+          TaggedPtr = prepareTaggedChunk(Ptr, Size, OddEvenMask, BlockEnd);
+        }
+        storePrimaryAllocationStackMaybe(Options, Ptr);
+      } else {
+        Block = addHeaderTag(Block);
+        Ptr = addHeaderTag(Ptr);
+        if (UNLIKELY(FillContents != NoFill)) {
+          // This condition is not necessarily unlikely, but since memset is
+          // costly, we might as well mark it as such.
+          memset(Block, FillContents == ZeroFill ? 0 : PatternFillByte,
+                 PrimaryT::getSizeByClassId(ClassId));
+        }
+      }
+    } else {
+      Block = addHeaderTag(Block);
+      Ptr = addHeaderTag(Ptr);
+      if (UNLIKELY(useMemoryTagging<Params>(Options))) {
+        storeTags(reinterpret_cast<uptr>(Block), reinterpret_cast<uptr>(Ptr));
+        storeSecondaryAllocationStackMaybe(Options, Ptr, Size);
+      }
+    }
+
+    Chunk::UnpackedHeader Header = {};
+    if (UNLIKELY(UnalignedUserPtr != UserPtr)) {
+      const uptr Offset = UserPtr - UnalignedUserPtr;
+      DCHECK_GE(Offset, 2 * sizeof(u32));
+      // The BlockMarker has no security purpose, but is specifically meant for
+      // the chunk iteration function that can be used in debugging situations.
+      // It is the only situation where we have to locate the start of a chunk
+      // based on its block address.
+      reinterpret_cast<u32 *>(Block)[0] = BlockMarker;
+      reinterpret_cast<u32 *>(Block)[1] = static_cast<u32>(Offset);
+      Header.Offset = (Offset >> MinAlignmentLog) & Chunk::OffsetMask;
+    }
+    Header.ClassId = ClassId & Chunk::ClassIdMask;
+    Header.State = Chunk::State::Allocated;
+    Header.OriginOrWasZeroed = Origin & Chunk::OriginMask;
+    Header.SizeOrUnusedBytes =
+        (ClassId ? Size : SecondaryBlockEnd - (UserPtr + Size)) &
+        Chunk::SizeOrUnusedBytesMask;
+    Chunk::storeHeader(Cookie, Ptr, &Header);
+
+    if (UNLIKELY(&__scudo_allocate_hook))
+      __scudo_allocate_hook(TaggedPtr, Size);
+
+    return TaggedPtr;
+  }
+
+  NOINLINE void deallocate(void *Ptr, Chunk::Origin Origin, uptr DeleteSize = 0,
+                           UNUSED uptr Alignment = MinAlignment) {
+    // For a deallocation, we only ensure minimal initialization, meaning thread
+    // local data will be left uninitialized for now (when using ELF TLS). The
+    // fallback cache will be used instead. This is a workaround for a situation
+    // where the only heap operation performed in a thread would be a free past
+    // the TLS destructors, ending up in initialized thread specific data never
+    // being destroyed properly. Any other heap operation will do a full init.
+    initThreadMaybe(/*MinimalInit=*/true);
+
+    if (UNLIKELY(&__scudo_deallocate_hook))
+      __scudo_deallocate_hook(Ptr);
+
+    if (UNLIKELY(!Ptr))
+      return;
+
+#ifdef GWP_ASAN_HOOKS
+    if (UNLIKELY(GuardedAlloc.pointerIsMine(Ptr))) {
+      GuardedAlloc.deallocate(Ptr);
+      Stats.lock();
+      Stats.add(StatFree, GuardedAllocSlotSize);
+      Stats.sub(StatAllocated, GuardedAllocSlotSize);
+      Stats.unlock();
+      return;
+    }
+#endif // GWP_ASAN_HOOKS
+
+    if (UNLIKELY(!isAligned(reinterpret_cast<uptr>(Ptr), MinAlignment)))
+      reportMisalignedPointer(AllocatorAction::Deallocating, Ptr);
+
+    void *TaggedPtr = Ptr;
+    Ptr = getHeaderTaggedPointer(Ptr);
+
+    Chunk::UnpackedHeader Header;
+    Chunk::loadHeader(Cookie, Ptr, &Header);
+
+    if (UNLIKELY(Header.State != Chunk::State::Allocated))
+      reportInvalidChunkState(AllocatorAction::Deallocating, Ptr);
+
+    const Options Options = Primary.Options.load();
+    if (Options.get(OptionBit::DeallocTypeMismatch)) {
+      if (UNLIKELY(Header.OriginOrWasZeroed != Origin)) {
+        // With the exception of memalign'd chunks, that can be still be free'd.
+        if (Header.OriginOrWasZeroed != Chunk::Origin::Memalign ||
+            Origin != Chunk::Origin::Malloc)
+          reportDeallocTypeMismatch(AllocatorAction::Deallocating, Ptr,
+                                    Header.OriginOrWasZeroed, Origin);
+      }
+    }
+
+    const uptr Size = getSize(Ptr, &Header);
+    if (DeleteSize && Options.get(OptionBit::DeleteSizeMismatch)) {
+      if (UNLIKELY(DeleteSize != Size))
+        reportDeleteSizeMismatch(Ptr, DeleteSize, Size);
+    }
+
+    quarantineOrDeallocateChunk(Options, TaggedPtr, &Header, Size);
+  }
+
+  void *reallocate(void *OldPtr, uptr NewSize, uptr Alignment = MinAlignment) {
+    initThreadMaybe();
+
+    const Options Options = Primary.Options.load();
+    if (UNLIKELY(NewSize >= MaxAllowedMallocSize)) {
+      if (Options.get(OptionBit::MayReturnNull))
+        return nullptr;
+      reportAllocationSizeTooBig(NewSize, 0, MaxAllowedMallocSize);
+    }
+
+    // The following cases are handled by the C wrappers.
+    DCHECK_NE(OldPtr, nullptr);
+    DCHECK_NE(NewSize, 0);
+
+#ifdef GWP_ASAN_HOOKS
+    if (UNLIKELY(GuardedAlloc.pointerIsMine(OldPtr))) {
+      uptr OldSize = GuardedAlloc.getSize(OldPtr);
+      void *NewPtr = allocate(NewSize, Chunk::Origin::Malloc, Alignment);
+      if (NewPtr)
+        memcpy(NewPtr, OldPtr, (NewSize < OldSize) ? NewSize : OldSize);
+      GuardedAlloc.deallocate(OldPtr);
+      Stats.lock();
+      Stats.add(StatFree, GuardedAllocSlotSize);
+      Stats.sub(StatAllocated, GuardedAllocSlotSize);
+      Stats.unlock();
+      return NewPtr;
+    }
+#endif // GWP_ASAN_HOOKS
+
+    void *OldTaggedPtr = OldPtr;
+    OldPtr = getHeaderTaggedPointer(OldPtr);
+
+    if (UNLIKELY(!isAligned(reinterpret_cast<uptr>(OldPtr), MinAlignment)))
+      reportMisalignedPointer(AllocatorAction::Reallocating, OldPtr);
+
+    Chunk::UnpackedHeader OldHeader;
+    Chunk::loadHeader(Cookie, OldPtr, &OldHeader);
+
+    if (UNLIKELY(OldHeader.State != Chunk::State::Allocated))
+      reportInvalidChunkState(AllocatorAction::Reallocating, OldPtr);
+
+    // Pointer has to be allocated with a malloc-type function. Some
+    // applications think that it is OK to realloc a memalign'ed pointer, which
+    // will trigger this check. It really isn't.
+    if (Options.get(OptionBit::DeallocTypeMismatch)) {
+      if (UNLIKELY(OldHeader.OriginOrWasZeroed != Chunk::Origin::Malloc))
+        reportDeallocTypeMismatch(AllocatorAction::Reallocating, OldPtr,
+                                  OldHeader.OriginOrWasZeroed,
+                                  Chunk::Origin::Malloc);
+    }
+
+    void *BlockBegin = getBlockBegin(OldTaggedPtr, &OldHeader);
+    uptr BlockEnd;
+    uptr OldSize;
+    const uptr ClassId = OldHeader.ClassId;
+    if (LIKELY(ClassId)) {
+      BlockEnd = reinterpret_cast<uptr>(BlockBegin) +
+                 SizeClassMap::getSizeByClassId(ClassId);
+      OldSize = OldHeader.SizeOrUnusedBytes;
+    } else {
+      BlockEnd = SecondaryT::getBlockEnd(BlockBegin);
+      OldSize = BlockEnd - (reinterpret_cast<uptr>(OldTaggedPtr) +
+                            OldHeader.SizeOrUnusedBytes);
+    }
+    // If the new chunk still fits in the previously allocated block (with a
+    // reasonable delta), we just keep the old block, and update the chunk
+    // header to reflect the size change.
+    if (reinterpret_cast<uptr>(OldTaggedPtr) + NewSize <= BlockEnd) {
+      if (NewSize > OldSize || (OldSize - NewSize) < getPageSizeCached()) {
+        Chunk::UnpackedHeader NewHeader = OldHeader;
+        NewHeader.SizeOrUnusedBytes =
+            (ClassId ? NewSize
+                     : BlockEnd -
+                           (reinterpret_cast<uptr>(OldTaggedPtr) + NewSize)) &
+            Chunk::SizeOrUnusedBytesMask;
+        Chunk::compareExchangeHeader(Cookie, OldPtr, &NewHeader, &OldHeader);
+        if (UNLIKELY(useMemoryTagging<Params>(Options))) {
+          if (ClassId) {
+            resizeTaggedChunk(reinterpret_cast<uptr>(OldTaggedPtr) + OldSize,
+                              reinterpret_cast<uptr>(OldTaggedPtr) + NewSize,
+                              NewSize, untagPointer(BlockEnd));
+            storePrimaryAllocationStackMaybe(Options, OldPtr);
+          } else {
+            storeSecondaryAllocationStackMaybe(Options, OldPtr, NewSize);
+          }
+        }
+        return OldTaggedPtr;
+      }
+    }
+
+    // Otherwise we allocate a new one, and deallocate the old one. Some
+    // allocators will allocate an even larger chunk (by a fixed factor) to
+    // allow for potential further in-place realloc. The gains of such a trick
+    // are currently unclear.
+    void *NewPtr = allocate(NewSize, Chunk::Origin::Malloc, Alignment);
+    if (LIKELY(NewPtr)) {
+      memcpy(NewPtr, OldTaggedPtr, Min(NewSize, OldSize));
+      quarantineOrDeallocateChunk(Options, OldTaggedPtr, &OldHeader, OldSize);
+    }
+    return NewPtr;
+  }
+
+  // TODO(kostyak): disable() is currently best-effort. There are some small
+  //                windows of time when an allocation could still succeed after
+  //                this function finishes. We will revisit that later.
+  void disable() {
+    initThreadMaybe();
+#ifdef GWP_ASAN_HOOKS
+    GuardedAlloc.disable();
+#endif
+    TSDRegistry.disable();
+    Stats.disable();
+    Quarantine.disable();
+    Primary.disable();
+    Secondary.disable();
+  }
+
+  void enable() {
+    initThreadMaybe();
+    Secondary.enable();
+    Primary.enable();
+    Quarantine.enable();
+    Stats.enable();
+    TSDRegistry.enable();
+#ifdef GWP_ASAN_HOOKS
+    GuardedAlloc.enable();
+#endif
+  }
+
+  // The function returns the amount of bytes required to store the statistics,
+  // which might be larger than the amount of bytes provided. Note that the
+  // statistics buffer is not necessarily constant between calls to this
+  // function. This can be called with a null buffer or zero size for buffer
+  // sizing purposes.
+  uptr getStats(char *Buffer, uptr Size) {
+    ScopedString Str;
+    disable();
+    const uptr Length = getStats(&Str) + 1;
+    enable();
+    if (Length < Size)
+      Size = Length;
+    if (Buffer && Size) {
+      memcpy(Buffer, Str.data(), Size);
+      Buffer[Size - 1] = '\0';
+    }
+    return Length;
+  }
+
+  void printStats() {
+    ScopedString Str;
+    disable();
+    getStats(&Str);
+    enable();
+    Str.output();
+  }
+
+  void releaseToOS() {
+    initThreadMaybe();
+    Primary.releaseToOS();
+    Secondary.releaseToOS();
+  }
+
+  // Iterate over all chunks and call a callback for all busy chunks located
+  // within the provided memory range. Said callback must not use this allocator
+  // or a deadlock can ensue. This fits Android's malloc_iterate() needs.
+  void iterateOverChunks(uptr Base, uptr Size, iterate_callback Callback,
+                         void *Arg) {
+    initThreadMaybe();
+    if (archSupportsMemoryTagging())
+      Base = untagPointer(Base);
+    const uptr From = Base;
+    const uptr To = Base + Size;
+    bool MayHaveTaggedPrimary = allocatorSupportsMemoryTagging<Params>() &&
+                                systemSupportsMemoryTagging();
+    auto Lambda = [this, From, To, MayHaveTaggedPrimary, Callback,
+                   Arg](uptr Block) {
+      if (Block < From || Block >= To)
+        return;
+      uptr Chunk;
+      Chunk::UnpackedHeader Header;
+      if (MayHaveTaggedPrimary) {
+        // A chunk header can either have a zero tag (tagged primary) or the
+        // header tag (secondary, or untagged primary). We don't know which so
+        // try both.
+        ScopedDisableMemoryTagChecks x;
+        if (!getChunkFromBlock(Block, &Chunk, &Header) &&
+            !getChunkFromBlock(addHeaderTag(Block), &Chunk, &Header))
+          return;
+      } else {
+        if (!getChunkFromBlock(addHeaderTag(Block), &Chunk, &Header))
+          return;
+      }
+      if (Header.State == Chunk::State::Allocated) {
+        uptr TaggedChunk = Chunk;
+        if (allocatorSupportsMemoryTagging<Params>())
+          TaggedChunk = untagPointer(TaggedChunk);
+        if (useMemoryTagging<Params>(Primary.Options.load()))
+          TaggedChunk = loadTag(Chunk);
+        Callback(TaggedChunk, getSize(reinterpret_cast<void *>(Chunk), &Header),
+                 Arg);
+      }
+    };
+    Primary.iterateOverBlocks(Lambda);
+    Secondary.iterateOverBlocks(Lambda);
+#ifdef GWP_ASAN_HOOKS
+    GuardedAlloc.iterate(reinterpret_cast<void *>(Base), Size, Callback, Arg);
+#endif
+  }
+
+  bool canReturnNull() {
+    initThreadMaybe();
+    return Primary.Options.load().get(OptionBit::MayReturnNull);
+  }
+
+  bool setOption(Option O, sptr Value) {
+    initThreadMaybe();
+    if (O == Option::MemtagTuning) {
+      // Enabling odd/even tags involves a tradeoff between use-after-free
+      // detection and buffer overflow detection. Odd/even tags make it more
+      // likely for buffer overflows to be detected by increasing the size of
+      // the guaranteed "red zone" around the allocation, but on the other hand
+      // use-after-free is less likely to be detected because the tag space for
+      // any particular chunk is cut in half. Therefore we use this tuning
+      // setting to control whether odd/even tags are enabled.
+      if (Value == M_MEMTAG_TUNING_BUFFER_OVERFLOW)
+        Primary.Options.set(OptionBit::UseOddEvenTags);
+      else if (Value == M_MEMTAG_TUNING_UAF)
+        Primary.Options.clear(OptionBit::UseOddEvenTags);
+      return true;
+    } else {
+      // We leave it to the various sub-components to decide whether or not they
+      // want to handle the option, but we do not want to short-circuit
+      // execution if one of the setOption was to return false.
+      const bool PrimaryResult = Primary.setOption(O, Value);
+      const bool SecondaryResult = Secondary.setOption(O, Value);
+      const bool RegistryResult = TSDRegistry.setOption(O, Value);
+      return PrimaryResult && SecondaryResult && RegistryResult;
+    }
+    return false;
+  }
+
+  // Return the usable size for a given chunk. Technically we lie, as we just
+  // report the actual size of a chunk. This is done to counteract code actively
+  // writing past the end of a chunk (like sqlite3) when the usable size allows
+  // for it, which then forces realloc to copy the usable size of a chunk as
+  // opposed to its actual size.
+  uptr getUsableSize(const void *Ptr) {
+    initThreadMaybe();
+    if (UNLIKELY(!Ptr))
+      return 0;
+
+#ifdef GWP_ASAN_HOOKS
+    if (UNLIKELY(GuardedAlloc.pointerIsMine(Ptr)))
+      return GuardedAlloc.getSize(Ptr);
+#endif // GWP_ASAN_HOOKS
+
+    Ptr = getHeaderTaggedPointer(const_cast<void *>(Ptr));
+    Chunk::UnpackedHeader Header;
+    Chunk::loadHeader(Cookie, Ptr, &Header);
+    // Getting the usable size of a chunk only makes sense if it's allocated.
+    if (UNLIKELY(Header.State != Chunk::State::Allocated))
+      reportInvalidChunkState(AllocatorAction::Sizing, const_cast<void *>(Ptr));
+    return getSize(Ptr, &Header);
+  }
+
+  void getStats(StatCounters S) {
+    initThreadMaybe();
+    Stats.get(S);
+  }
+
+  // Returns true if the pointer provided was allocated by the current
+  // allocator instance, which is compliant with tcmalloc's ownership concept.
+  // A corrupted chunk will not be reported as owned, which is WAI.
+  bool isOwned(const void *Ptr) {
+    initThreadMaybe();
+#ifdef GWP_ASAN_HOOKS
+    if (GuardedAlloc.pointerIsMine(Ptr))
+      return true;
+#endif // GWP_ASAN_HOOKS
+    if (!Ptr || !isAligned(reinterpret_cast<uptr>(Ptr), MinAlignment))
+      return false;
+    Ptr = getHeaderTaggedPointer(const_cast<void *>(Ptr));
+    Chunk::UnpackedHeader Header;
+    return Chunk::isValid(Cookie, Ptr, &Header) &&
+           Header.State == Chunk::State::Allocated;
+  }
+
+  bool useMemoryTaggingTestOnly() const {
+    return useMemoryTagging<Params>(Primary.Options.load());
+  }
+  void disableMemoryTagging() {
+    // If we haven't been initialized yet, we need to initialize now in order to
+    // prevent a future call to initThreadMaybe() from enabling memory tagging
+    // based on feature detection. But don't call initThreadMaybe() because it
+    // may end up calling the allocator (via pthread_atfork, via the post-init
+    // callback), which may cause mappings to be created with memory tagging
+    // enabled.
+    TSDRegistry.initOnceMaybe(this);
+    if (allocatorSupportsMemoryTagging<Params>()) {
+      Secondary.disableMemoryTagging();
+      Primary.Options.clear(OptionBit::UseMemoryTagging);
+    }
+  }
+
+  void setTrackAllocationStacks(bool Track) {
+    initThreadMaybe();
+    if (Track)
+      Primary.Options.set(OptionBit::TrackAllocationStacks);
+    else
+      Primary.Options.clear(OptionBit::TrackAllocationStacks);
+  }
+
+  void setFillContents(FillContentsMode FillContents) {
+    initThreadMaybe();
+    Primary.Options.setFillContentsMode(FillContents);
+  }
+
+  void setAddLargeAllocationSlack(bool AddSlack) {
+    initThreadMaybe();
+    if (AddSlack)
+      Primary.Options.set(OptionBit::AddLargeAllocationSlack);
+    else
+      Primary.Options.clear(OptionBit::AddLargeAllocationSlack);
+  }
+
+  const char *getStackDepotAddress() const {
+    return reinterpret_cast<const char *>(&Depot);
+  }
+
+  const char *getRegionInfoArrayAddress() const {
+    return Primary.getRegionInfoArrayAddress();
+  }
+
+  static uptr getRegionInfoArraySize() {
+    return PrimaryT::getRegionInfoArraySize();
+  }
+
+  const char *getRingBufferAddress() const {
+    return reinterpret_cast<const char *>(&RingBuffer);
+  }
+
+  static uptr getRingBufferSize() { return sizeof(RingBuffer); }
+
+  static const uptr MaxTraceSize = 64;
+
+  static void collectTraceMaybe(const StackDepot *Depot,
+                                uintptr_t (&Trace)[MaxTraceSize], u32 Hash) {
+    uptr RingPos, Size;
+    if (!Depot->find(Hash, &RingPos, &Size))
+      return;
+    for (unsigned I = 0; I != Size && I != MaxTraceSize; ++I)
+      Trace[I] = static_cast<uintptr_t>((*Depot)[RingPos + I]);
+  }
+
+  static void getErrorInfo(struct scudo_error_info *ErrorInfo,
+                           uintptr_t FaultAddr, const char *DepotPtr,
+                           const char *RegionInfoPtr, const char *RingBufferPtr,
+                           const char *Memory, const char *MemoryTags,
+                           uintptr_t MemoryAddr, size_t MemorySize) {
+    *ErrorInfo = {};
+    if (!allocatorSupportsMemoryTagging<Params>() ||
+        MemoryAddr + MemorySize < MemoryAddr)
+      return;
+
+    auto *Depot = reinterpret_cast<const StackDepot *>(DepotPtr);
+    size_t NextErrorReport = 0;
+
+    // Check for OOB in the current block and the two surrounding blocks. Beyond
+    // that, UAF is more likely.
+    if (extractTag(FaultAddr) != 0)
+      getInlineErrorInfo(ErrorInfo, NextErrorReport, FaultAddr, Depot,
+                         RegionInfoPtr, Memory, MemoryTags, MemoryAddr,
+                         MemorySize, 0, 2);
+
+    // Check the ring buffer. For primary allocations this will only find UAF;
+    // for secondary allocations we can find either UAF or OOB.
+    getRingBufferErrorInfo(ErrorInfo, NextErrorReport, FaultAddr, Depot,
+                           RingBufferPtr);
+
+    // Check for OOB in the 28 blocks surrounding the 3 we checked earlier.
+    // Beyond that we are likely to hit false positives.
+    if (extractTag(FaultAddr) != 0)
+      getInlineErrorInfo(ErrorInfo, NextErrorReport, FaultAddr, Depot,
+                         RegionInfoPtr, Memory, MemoryTags, MemoryAddr,
+                         MemorySize, 2, 16);
+  }
+
+private:
+  using SecondaryT = MapAllocator<Params>;
+  typedef typename PrimaryT::SizeClassMap SizeClassMap;
+
+  static const uptr MinAlignmentLog = SCUDO_MIN_ALIGNMENT_LOG;
+  static const uptr MaxAlignmentLog = 24U; // 16 MB seems reasonable.
+  static const uptr MinAlignment = 1UL << MinAlignmentLog;
+  static const uptr MaxAlignment = 1UL << MaxAlignmentLog;
+  static const uptr MaxAllowedMallocSize =
+      FIRST_32_SECOND_64(1UL << 31, 1ULL << 40);
+
+  static_assert(MinAlignment >= sizeof(Chunk::PackedHeader),
+                "Minimal alignment must at least cover a chunk header.");
+  static_assert(!allocatorSupportsMemoryTagging<Params>() ||
+                    MinAlignment >= archMemoryTagGranuleSize(),
+                "");
+
+  static const u32 BlockMarker = 0x44554353U;
+
+  // These are indexes into an "array" of 32-bit values that store information
+  // inline with a chunk that is relevant to diagnosing memory tag faults, where
+  // 0 corresponds to the address of the user memory. This means that only
+  // negative indexes may be used. The smallest index that may be used is -2,
+  // which corresponds to 8 bytes before the user memory, because the chunk
+  // header size is 8 bytes and in allocators that support memory tagging the
+  // minimum alignment is at least the tag granule size (16 on aarch64).
+  static const sptr MemTagAllocationTraceIndex = -2;
+  static const sptr MemTagAllocationTidIndex = -1;
+
+  u32 Cookie = 0;
+  u32 QuarantineMaxChunkSize = 0;
+
+  GlobalStats Stats;
+  PrimaryT Primary;
+  SecondaryT Secondary;
+  QuarantineT Quarantine;
+  TSDRegistryT TSDRegistry;
+  pthread_once_t PostInitNonce = PTHREAD_ONCE_INIT;
+
+#ifdef GWP_ASAN_HOOKS
+  gwp_asan::GuardedPoolAllocator GuardedAlloc;
+  uptr GuardedAllocSlotSize = 0;
+#endif // GWP_ASAN_HOOKS
+
+  StackDepot Depot;
+
+  struct AllocationRingBuffer {
+    struct Entry {
+      atomic_uptr Ptr;
+      atomic_uptr AllocationSize;
+      atomic_u32 AllocationTrace;
+      atomic_u32 AllocationTid;
+      atomic_u32 DeallocationTrace;
+      atomic_u32 DeallocationTid;
+    };
+
+    atomic_uptr Pos;
+#ifdef SCUDO_FUZZ
+    static const uptr NumEntries = 2;
+#else
+    static const uptr NumEntries = 32768;
+#endif
+    Entry Entries[NumEntries];
+  };
+  AllocationRingBuffer RingBuffer = {};
+
+  // The following might get optimized out by the compiler.
+  NOINLINE void performSanityChecks() {
+    // Verify that the header offset field can hold the maximum offset. In the
+    // case of the Secondary allocator, it takes care of alignment and the
+    // offset will always be small. In the case of the Primary, the worst case
+    // scenario happens in the last size class, when the backend allocation
+    // would already be aligned on the requested alignment, which would happen
+    // to be the maximum alignment that would fit in that size class. As a
+    // result, the maximum offset will be at most the maximum alignment for the
+    // last size class minus the header size, in multiples of MinAlignment.
+    Chunk::UnpackedHeader Header = {};
+    const uptr MaxPrimaryAlignment = 1UL << getMostSignificantSetBitIndex(
+                                         SizeClassMap::MaxSize - MinAlignment);
+    const uptr MaxOffset =
+        (MaxPrimaryAlignment - Chunk::getHeaderSize()) >> MinAlignmentLog;
+    Header.Offset = MaxOffset & Chunk::OffsetMask;
+    if (UNLIKELY(Header.Offset != MaxOffset))
+      reportSanityCheckError("offset");
+
+    // Verify that we can fit the maximum size or amount of unused bytes in the
+    // header. Given that the Secondary fits the allocation to a page, the worst
+    // case scenario happens in the Primary. It will depend on the second to
+    // last and last class sizes, as well as the dynamic base for the Primary.
+    // The following is an over-approximation that works for our needs.
+    const uptr MaxSizeOrUnusedBytes = SizeClassMap::MaxSize - 1;
+    Header.SizeOrUnusedBytes = MaxSizeOrUnusedBytes;
+    if (UNLIKELY(Header.SizeOrUnusedBytes != MaxSizeOrUnusedBytes))
+      reportSanityCheckError("size (or unused bytes)");
+
+    const uptr LargestClassId = SizeClassMap::LargestClassId;
+    Header.ClassId = LargestClassId;
+    if (UNLIKELY(Header.ClassId != LargestClassId))
+      reportSanityCheckError("class ID");
+  }
+
+  static inline void *getBlockBegin(const void *Ptr,
+                                    Chunk::UnpackedHeader *Header) {
+    return reinterpret_cast<void *>(
+        reinterpret_cast<uptr>(Ptr) - Chunk::getHeaderSize() -
+        (static_cast<uptr>(Header->Offset) << MinAlignmentLog));
+  }
+
+  // Return the size of a chunk as requested during its allocation.
+  inline uptr getSize(const void *Ptr, Chunk::UnpackedHeader *Header) {
+    const uptr SizeOrUnusedBytes = Header->SizeOrUnusedBytes;
+    if (LIKELY(Header->ClassId))
+      return SizeOrUnusedBytes;
+    if (allocatorSupportsMemoryTagging<Params>())
+      Ptr = untagPointer(const_cast<void *>(Ptr));
+    return SecondaryT::getBlockEnd(getBlockBegin(Ptr, Header)) -
+           reinterpret_cast<uptr>(Ptr) - SizeOrUnusedBytes;
+  }
+
+  void quarantineOrDeallocateChunk(Options Options, void *TaggedPtr,
+                                   Chunk::UnpackedHeader *Header, uptr Size) {
+    void *Ptr = getHeaderTaggedPointer(TaggedPtr);
+    Chunk::UnpackedHeader NewHeader = *Header;
+    // If the quarantine is disabled, the actual size of a chunk is 0 or larger
+    // than the maximum allowed, we return a chunk directly to the backend.
+    // This purposefully underflows for Size == 0.
+    const bool BypassQuarantine = !Quarantine.getCacheSize() ||
+                                  ((Size - 1) >= QuarantineMaxChunkSize) ||
+                                  !NewHeader.ClassId;
+    if (BypassQuarantine)
+      NewHeader.State = Chunk::State::Available;
+    else
+      NewHeader.State = Chunk::State::Quarantined;
+    NewHeader.OriginOrWasZeroed = useMemoryTagging<Params>(Options) &&
+                                  NewHeader.ClassId &&
+                                  !TSDRegistry.getDisableMemInit();
+    Chunk::compareExchangeHeader(Cookie, Ptr, &NewHeader, Header);
+
+    if (UNLIKELY(useMemoryTagging<Params>(Options))) {
+      u8 PrevTag = extractTag(reinterpret_cast<uptr>(TaggedPtr));
+      storeDeallocationStackMaybe(Options, Ptr, PrevTag, Size);
+      if (NewHeader.ClassId) {
+        if (!TSDRegistry.getDisableMemInit()) {
+          uptr TaggedBegin, TaggedEnd;
+          const uptr OddEvenMask = computeOddEvenMaskForPointerMaybe(
+              Options, reinterpret_cast<uptr>(getBlockBegin(Ptr, &NewHeader)),
+              NewHeader.ClassId);
+          // Exclude the previous tag so that immediate use after free is
+          // detected 100% of the time.
+          setRandomTag(Ptr, Size, OddEvenMask | (1UL << PrevTag), &TaggedBegin,
+                       &TaggedEnd);
+        }
+      }
+    }
+    if (BypassQuarantine) {
+      if (allocatorSupportsMemoryTagging<Params>())
+        Ptr = untagPointer(Ptr);
+      void *BlockBegin = getBlockBegin(Ptr, &NewHeader);
+      const uptr ClassId = NewHeader.ClassId;
+      if (LIKELY(ClassId)) {
+        bool UnlockRequired;
+        auto *TSD = TSDRegistry.getTSDAndLock(&UnlockRequired);
+        TSD->Cache.deallocate(ClassId, BlockBegin);
+        if (UnlockRequired)
+          TSD->unlock();
+      } else {
+        if (UNLIKELY(useMemoryTagging<Params>(Options)))
+          storeTags(reinterpret_cast<uptr>(BlockBegin),
+                    reinterpret_cast<uptr>(Ptr));
+        Secondary.deallocate(Options, BlockBegin);
+      }
+    } else {
+      bool UnlockRequired;
+      auto *TSD = TSDRegistry.getTSDAndLock(&UnlockRequired);
+      Quarantine.put(&TSD->QuarantineCache,
+                     QuarantineCallback(*this, TSD->Cache), Ptr, Size);
+      if (UnlockRequired)
+        TSD->unlock();
+    }
+  }
+
+  bool getChunkFromBlock(uptr Block, uptr *Chunk,
+                         Chunk::UnpackedHeader *Header) {
+    *Chunk =
+        Block + getChunkOffsetFromBlock(reinterpret_cast<const char *>(Block));
+    return Chunk::isValid(Cookie, reinterpret_cast<void *>(*Chunk), Header);
+  }
+
+  static uptr getChunkOffsetFromBlock(const char *Block) {
+    u32 Offset = 0;
+    if (reinterpret_cast<const u32 *>(Block)[0] == BlockMarker)
+      Offset = reinterpret_cast<const u32 *>(Block)[1];
+    return Offset + Chunk::getHeaderSize();
+  }
+
+  // Set the tag of the granule past the end of the allocation to 0, to catch
+  // linear overflows even if a previous larger allocation used the same block
+  // and tag. Only do this if the granule past the end is in our block, because
+  // this would otherwise lead to a SEGV if the allocation covers the entire
+  // block and our block is at the end of a mapping. The tag of the next block's
+  // header granule will be set to 0, so it will serve the purpose of catching
+  // linear overflows in this case.
+  //
+  // For allocations of size 0 we do not end up storing the address tag to the
+  // memory tag space, which getInlineErrorInfo() normally relies on to match
+  // address tags against chunks. To allow matching in this case we store the
+  // address tag in the first byte of the chunk.
+  void storeEndMarker(uptr End, uptr Size, uptr BlockEnd) {
+    DCHECK_EQ(BlockEnd, untagPointer(BlockEnd));
+    uptr UntaggedEnd = untagPointer(End);
+    if (UntaggedEnd != BlockEnd) {
+      storeTag(UntaggedEnd);
+      if (Size == 0)
+        *reinterpret_cast<u8 *>(UntaggedEnd) = extractTag(End);
+    }
+  }
+
+  void *prepareTaggedChunk(void *Ptr, uptr Size, uptr ExcludeMask,
+                           uptr BlockEnd) {
+    // Prepare the granule before the chunk to store the chunk header by setting
+    // its tag to 0. Normally its tag will already be 0, but in the case where a
+    // chunk holding a low alignment allocation is reused for a higher alignment
+    // allocation, the chunk may already have a non-zero tag from the previous
+    // allocation.
+    storeTag(reinterpret_cast<uptr>(Ptr) - archMemoryTagGranuleSize());
+
+    uptr TaggedBegin, TaggedEnd;
+    setRandomTag(Ptr, Size, ExcludeMask, &TaggedBegin, &TaggedEnd);
+
+    storeEndMarker(TaggedEnd, Size, BlockEnd);
+    return reinterpret_cast<void *>(TaggedBegin);
+  }
+
+  void resizeTaggedChunk(uptr OldPtr, uptr NewPtr, uptr NewSize,
+                         uptr BlockEnd) {
+    uptr RoundOldPtr = roundUpTo(OldPtr, archMemoryTagGranuleSize());
+    uptr RoundNewPtr;
+    if (RoundOldPtr >= NewPtr) {
+      // If the allocation is shrinking we just need to set the tag past the end
+      // of the allocation to 0. See explanation in storeEndMarker() above.
+      RoundNewPtr = roundUpTo(NewPtr, archMemoryTagGranuleSize());
+    } else {
+      // Set the memory tag of the region
+      // [RoundOldPtr, roundUpTo(NewPtr, archMemoryTagGranuleSize()))
+      // to the pointer tag stored in OldPtr.
+      RoundNewPtr = storeTags(RoundOldPtr, NewPtr);
+    }
+    storeEndMarker(RoundNewPtr, NewSize, BlockEnd);
+  }
+
+  void storePrimaryAllocationStackMaybe(Options Options, void *Ptr) {
+    if (!UNLIKELY(Options.get(OptionBit::TrackAllocationStacks)))
+      return;
+    auto *Ptr32 = reinterpret_cast<u32 *>(Ptr);
+    Ptr32[MemTagAllocationTraceIndex] = collectStackTrace();
+    Ptr32[MemTagAllocationTidIndex] = getThreadID();
+  }
+
+  void storeRingBufferEntry(void *Ptr, u32 AllocationTrace, u32 AllocationTid,
+                            uptr AllocationSize, u32 DeallocationTrace,
+                            u32 DeallocationTid) {
+    uptr Pos = atomic_fetch_add(&RingBuffer.Pos, 1, memory_order_relaxed);
+    typename AllocationRingBuffer::Entry *Entry =
+        &RingBuffer.Entries[Pos % AllocationRingBuffer::NumEntries];
+
+    // First invalidate our entry so that we don't attempt to interpret a
+    // partially written state in getSecondaryErrorInfo(). The fences below
+    // ensure that the compiler does not move the stores to Ptr in between the
+    // stores to the other fields.
+    atomic_store_relaxed(&Entry->Ptr, 0);
+
+    __atomic_signal_fence(__ATOMIC_SEQ_CST);
+    atomic_store_relaxed(&Entry->AllocationTrace, AllocationTrace);
+    atomic_store_relaxed(&Entry->AllocationTid, AllocationTid);
+    atomic_store_relaxed(&Entry->AllocationSize, AllocationSize);
+    atomic_store_relaxed(&Entry->DeallocationTrace, DeallocationTrace);
+    atomic_store_relaxed(&Entry->DeallocationTid, DeallocationTid);
+    __atomic_signal_fence(__ATOMIC_SEQ_CST);
+
+    atomic_store_relaxed(&Entry->Ptr, reinterpret_cast<uptr>(Ptr));
+  }
+
+  void storeSecondaryAllocationStackMaybe(Options Options, void *Ptr,
+                                          uptr Size) {
+    if (!UNLIKELY(Options.get(OptionBit::TrackAllocationStacks)))
+      return;
+
+    u32 Trace = collectStackTrace();
+    u32 Tid = getThreadID();
+
+    auto *Ptr32 = reinterpret_cast<u32 *>(Ptr);
+    Ptr32[MemTagAllocationTraceIndex] = Trace;
+    Ptr32[MemTagAllocationTidIndex] = Tid;
+
+    storeRingBufferEntry(untagPointer(Ptr), Trace, Tid, Size, 0, 0);
+  }
+
+  void storeDeallocationStackMaybe(Options Options, void *Ptr, u8 PrevTag,
+                                   uptr Size) {
+    if (!UNLIKELY(Options.get(OptionBit::TrackAllocationStacks)))
+      return;
+
+    auto *Ptr32 = reinterpret_cast<u32 *>(Ptr);
+    u32 AllocationTrace = Ptr32[MemTagAllocationTraceIndex];
+    u32 AllocationTid = Ptr32[MemTagAllocationTidIndex];
+
+    u32 DeallocationTrace = collectStackTrace();
+    u32 DeallocationTid = getThreadID();
+
+    storeRingBufferEntry(addFixedTag(untagPointer(Ptr), PrevTag),
+                         AllocationTrace, AllocationTid, Size,
+                         DeallocationTrace, DeallocationTid);
+  }
+
+  static const size_t NumErrorReports =
+      sizeof(((scudo_error_info *)0)->reports) /
+      sizeof(((scudo_error_info *)0)->reports[0]);
+
+  static void getInlineErrorInfo(struct scudo_error_info *ErrorInfo,
+                                 size_t &NextErrorReport, uintptr_t FaultAddr,
+                                 const StackDepot *Depot,
+                                 const char *RegionInfoPtr, const char *Memory,
+                                 const char *MemoryTags, uintptr_t MemoryAddr,
+                                 size_t MemorySize, size_t MinDistance,
+                                 size_t MaxDistance) {
+    uptr UntaggedFaultAddr = untagPointer(FaultAddr);
+    u8 FaultAddrTag = extractTag(FaultAddr);
+    BlockInfo Info =
+        PrimaryT::findNearestBlock(RegionInfoPtr, UntaggedFaultAddr);
+
+    auto GetGranule = [&](uptr Addr, const char **Data, uint8_t *Tag) -> bool {
+      if (Addr < MemoryAddr || Addr + archMemoryTagGranuleSize() < Addr ||
+          Addr + archMemoryTagGranuleSize() > MemoryAddr + MemorySize)
+        return false;
+      *Data = &Memory[Addr - MemoryAddr];
+      *Tag = static_cast<u8>(
+          MemoryTags[(Addr - MemoryAddr) / archMemoryTagGranuleSize()]);
+      return true;
+    };
+
+    auto ReadBlock = [&](uptr Addr, uptr *ChunkAddr,
+                         Chunk::UnpackedHeader *Header, const u32 **Data,
+                         u8 *Tag) {
+      const char *BlockBegin;
+      u8 BlockBeginTag;
+      if (!GetGranule(Addr, &BlockBegin, &BlockBeginTag))
+        return false;
+      uptr ChunkOffset = getChunkOffsetFromBlock(BlockBegin);
+      *ChunkAddr = Addr + ChunkOffset;
+
+      const char *ChunkBegin;
+      if (!GetGranule(*ChunkAddr, &ChunkBegin, Tag))
+        return false;
+      *Header = *reinterpret_cast<const Chunk::UnpackedHeader *>(
+          ChunkBegin - Chunk::getHeaderSize());
+      *Data = reinterpret_cast<const u32 *>(ChunkBegin);
+
+      // Allocations of size 0 will have stashed the tag in the first byte of
+      // the chunk, see storeEndMarker().
+      if (Header->SizeOrUnusedBytes == 0)
+        *Tag = static_cast<u8>(*ChunkBegin);
+
+      return true;
+    };
+
+    if (NextErrorReport == NumErrorReports)
+      return;
+
+    auto CheckOOB = [&](uptr BlockAddr) {
+      if (BlockAddr < Info.RegionBegin || BlockAddr >= Info.RegionEnd)
+        return false;
+
+      uptr ChunkAddr;
+      Chunk::UnpackedHeader Header;
+      const u32 *Data;
+      uint8_t Tag;
+      if (!ReadBlock(BlockAddr, &ChunkAddr, &Header, &Data, &Tag) ||
+          Header.State != Chunk::State::Allocated || Tag != FaultAddrTag)
+        return false;
+
+      auto *R = &ErrorInfo->reports[NextErrorReport++];
+      R->error_type =
+          UntaggedFaultAddr < ChunkAddr ? BUFFER_UNDERFLOW : BUFFER_OVERFLOW;
+      R->allocation_address = ChunkAddr;
+      R->allocation_size = Header.SizeOrUnusedBytes;
+      collectTraceMaybe(Depot, R->allocation_trace,
+                        Data[MemTagAllocationTraceIndex]);
+      R->allocation_tid = Data[MemTagAllocationTidIndex];
+      return NextErrorReport == NumErrorReports;
+    };
+
+    if (MinDistance == 0 && CheckOOB(Info.BlockBegin))
+      return;
+
+    for (size_t I = Max<size_t>(MinDistance, 1); I != MaxDistance; ++I)
+      if (CheckOOB(Info.BlockBegin + I * Info.BlockSize) ||
+          CheckOOB(Info.BlockBegin - I * Info.BlockSize))
+        return;
+  }
+
+  static void getRingBufferErrorInfo(struct scudo_error_info *ErrorInfo,
+                                     size_t &NextErrorReport,
+                                     uintptr_t FaultAddr,
+                                     const StackDepot *Depot,
+                                     const char *RingBufferPtr) {
+    auto *RingBuffer =
+        reinterpret_cast<const AllocationRingBuffer *>(RingBufferPtr);
+    uptr Pos = atomic_load_relaxed(&RingBuffer->Pos);
+
+    for (uptr I = Pos - 1; I != Pos - 1 - AllocationRingBuffer::NumEntries &&
+                           NextErrorReport != NumErrorReports;
+         --I) {
+      auto *Entry = &RingBuffer->Entries[I % AllocationRingBuffer::NumEntries];
+      uptr EntryPtr = atomic_load_relaxed(&Entry->Ptr);
+      if (!EntryPtr)
+        continue;
+
+      uptr UntaggedEntryPtr = untagPointer(EntryPtr);
+      uptr EntrySize = atomic_load_relaxed(&Entry->AllocationSize);
+      u32 AllocationTrace = atomic_load_relaxed(&Entry->AllocationTrace);
+      u32 AllocationTid = atomic_load_relaxed(&Entry->AllocationTid);
+      u32 DeallocationTrace = atomic_load_relaxed(&Entry->DeallocationTrace);
+      u32 DeallocationTid = atomic_load_relaxed(&Entry->DeallocationTid);
+
+      if (DeallocationTid) {
+        // For UAF we only consider in-bounds fault addresses because
+        // out-of-bounds UAF is rare and attempting to detect it is very likely
+        // to result in false positives.
+        if (FaultAddr < EntryPtr || FaultAddr >= EntryPtr + EntrySize)
+          continue;
+      } else {
+        // Ring buffer OOB is only possible with secondary allocations. In this
+        // case we are guaranteed a guard region of at least a page on either
+        // side of the allocation (guard page on the right, guard page + tagged
+        // region on the left), so ignore any faults outside of that range.
+        if (FaultAddr < EntryPtr - getPageSizeCached() ||
+            FaultAddr >= EntryPtr + EntrySize + getPageSizeCached())
+          continue;
+
+        // For UAF the ring buffer will contain two entries, one for the
+        // allocation and another for the deallocation. Don't report buffer
+        // overflow/underflow using the allocation entry if we have already
+        // collected a report from the deallocation entry.
+        bool Found = false;
+        for (uptr J = 0; J != NextErrorReport; ++J) {
+          if (ErrorInfo->reports[J].allocation_address == UntaggedEntryPtr) {
+            Found = true;
+            break;
+          }
+        }
+        if (Found)
+          continue;
+      }
+
+      auto *R = &ErrorInfo->reports[NextErrorReport++];
+      if (DeallocationTid)
+        R->error_type = USE_AFTER_FREE;
+      else if (FaultAddr < EntryPtr)
+        R->error_type = BUFFER_UNDERFLOW;
+      else
+        R->error_type = BUFFER_OVERFLOW;
+
+      R->allocation_address = UntaggedEntryPtr;
+      R->allocation_size = EntrySize;
+      collectTraceMaybe(Depot, R->allocation_trace, AllocationTrace);
+      R->allocation_tid = AllocationTid;
+      collectTraceMaybe(Depot, R->deallocation_trace, DeallocationTrace);
+      R->deallocation_tid = DeallocationTid;
+    }
+  }
+
+  uptr getStats(ScopedString *Str) {
+    Primary.getStats(Str);
+    Secondary.getStats(Str);
+    Quarantine.getStats(Str);
+    return Str->length();
+  }
+};
+
+} // namespace scudo
+
+#endif // SCUDO_COMBINED_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/common.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/common.cpp
new file mode 100644
index 0000000000..666f95400c
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/common.cpp
@@ -0,0 +1,38 @@
+//===-- common.cpp ----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "common.h"
+#include "atomic_helpers.h"
+#include "string_utils.h"
+
+namespace scudo {
+
+uptr PageSizeCached;
+uptr getPageSize();
+
+uptr getPageSizeSlow() {
+  PageSizeCached = getPageSize();
+  CHECK_NE(PageSizeCached, 0);
+  return PageSizeCached;
+}
+
+// Fatal internal map() or unmap() error (potentially OOM related).
+void NORETURN dieOnMapUnmapError(uptr SizeIfOOM) {
+  char Error[128] = "Scudo ERROR: internal map or unmap failure\n";
+  if (SizeIfOOM) {
+    formatString(
+        Error, sizeof(Error),
+        "Scudo ERROR: internal map failure (NO MEMORY) requesting %zuKB\n",
+        SizeIfOOM >> 10);
+  }
+  outputRaw(Error);
+  setAbortMessage(Error);
+  die();
+}
+
+} // namespace scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/common.h b/contrib/libs/clang14-rt/lib/scudo/standalone/common.h
new file mode 100644
index 0000000000..bc3dfec6db
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/common.h
@@ -0,0 +1,211 @@
+//===-- common.h ------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_COMMON_H_
+#define SCUDO_COMMON_H_
+
+#include "internal_defs.h"
+
+#include "fuchsia.h"
+#include "linux.h"
+#include "trusty.h"
+
+#include <stddef.h>
+#include <string.h>
+
+namespace scudo {
+
+template <class Dest, class Source> inline Dest bit_cast(const Source &S) {
+  static_assert(sizeof(Dest) == sizeof(Source), "");
+  Dest D;
+  memcpy(&D, &S, sizeof(D));
+  return D;
+}
+
+inline constexpr uptr roundUpTo(uptr X, uptr Boundary) {
+  return (X + Boundary - 1) & ~(Boundary - 1);
+}
+
+inline constexpr uptr roundDownTo(uptr X, uptr Boundary) {
+  return X & ~(Boundary - 1);
+}
+
+inline constexpr bool isAligned(uptr X, uptr Alignment) {
+  return (X & (Alignment - 1)) == 0;
+}
+
+template <class T> constexpr T Min(T A, T B) { return A < B ? A : B; }
+
+template <class T> constexpr T Max(T A, T B) { return A > B ? A : B; }
+
+template <class T> void Swap(T &A, T &B) {
+  T Tmp = A;
+  A = B;
+  B = Tmp;
+}
+
+inline bool isPowerOfTwo(uptr X) { return (X & (X - 1)) == 0; }
+
+inline uptr getMostSignificantSetBitIndex(uptr X) {
+  DCHECK_NE(X, 0U);
+  return SCUDO_WORDSIZE - 1U - static_cast<uptr>(__builtin_clzl(X));
+}
+
+inline uptr roundUpToPowerOfTwo(uptr Size) {
+  DCHECK(Size);
+  if (isPowerOfTwo(Size))
+    return Size;
+  const uptr Up = getMostSignificantSetBitIndex(Size);
+  DCHECK_LT(Size, (1UL << (Up + 1)));
+  DCHECK_GT(Size, (1UL << Up));
+  return 1UL << (Up + 1);
+}
+
+inline uptr getLeastSignificantSetBitIndex(uptr X) {
+  DCHECK_NE(X, 0U);
+  return static_cast<uptr>(__builtin_ctzl(X));
+}
+
+inline uptr getLog2(uptr X) {
+  DCHECK(isPowerOfTwo(X));
+  return getLeastSignificantSetBitIndex(X);
+}
+
+inline u32 getRandomU32(u32 *State) {
+  // ANSI C linear congruential PRNG (16-bit output).
+  // return (*State = *State * 1103515245 + 12345) >> 16;
+  // XorShift (32-bit output).
+  *State ^= *State << 13;
+  *State ^= *State >> 17;
+  *State ^= *State << 5;
+  return *State;
+}
+
+inline u32 getRandomModN(u32 *State, u32 N) {
+  return getRandomU32(State) % N; // [0, N)
+}
+
+template <typename T> inline void shuffle(T *A, u32 N, u32 *RandState) {
+  if (N <= 1)
+    return;
+  u32 State = *RandState;
+  for (u32 I = N - 1; I > 0; I--)
+    Swap(A[I], A[getRandomModN(&State, I + 1)]);
+  *RandState = State;
+}
+
+// Hardware specific inlinable functions.
+
+inline void yieldProcessor(u8 Count) {
+#if defined(__i386__) || defined(__x86_64__)
+  __asm__ __volatile__("" ::: "memory");
+  for (u8 I = 0; I < Count; I++)
+    __asm__ __volatile__("pause");
+#elif defined(__aarch64__) || defined(__arm__)
+  __asm__ __volatile__("" ::: "memory");
+  for (u8 I = 0; I < Count; I++)
+    __asm__ __volatile__("yield");
+#endif
+  __asm__ __volatile__("" ::: "memory");
+}
+
+// Platform specific functions.
+
+extern uptr PageSizeCached;
+uptr getPageSizeSlow();
+inline uptr getPageSizeCached() {
+  // Bionic uses a hardcoded value.
+  if (SCUDO_ANDROID)
+    return 4096U;
+  if (LIKELY(PageSizeCached))
+    return PageSizeCached;
+  return getPageSizeSlow();
+}
+
+// Returns 0 if the number of CPUs could not be determined.
+u32 getNumberOfCPUs();
+
+const char *getEnv(const char *Name);
+
+u64 getMonotonicTime();
+
+u32 getThreadID();
+
+// Our randomness gathering function is limited to 256 bytes to ensure we get
+// as many bytes as requested, and avoid interruptions (on Linux).
+constexpr uptr MaxRandomLength = 256U;
+bool getRandom(void *Buffer, uptr Length, bool Blocking = false);
+
+// Platform memory mapping functions.
+
+#define MAP_ALLOWNOMEM (1U << 0)
+#define MAP_NOACCESS (1U << 1)
+#define MAP_RESIZABLE (1U << 2)
+#define MAP_MEMTAG (1U << 3)
+
+// Our platform memory mapping use is restricted to 3 scenarios:
+// - reserve memory at a random address (MAP_NOACCESS);
+// - commit memory in a previously reserved space;
+// - commit memory at a random address.
+// As such, only a subset of parameters combinations is valid, which is checked
+// by the function implementation. The Data parameter allows to pass opaque
+// platform specific data to the function.
+// Returns nullptr on error or dies if MAP_ALLOWNOMEM is not specified.
+void *map(void *Addr, uptr Size, const char *Name, uptr Flags = 0,
+          MapPlatformData *Data = nullptr);
+
+// Indicates that we are getting rid of the whole mapping, which might have
+// further consequences on Data, depending on the platform.
+#define UNMAP_ALL (1U << 0)
+
+void unmap(void *Addr, uptr Size, uptr Flags = 0,
+           MapPlatformData *Data = nullptr);
+
+void setMemoryPermission(uptr Addr, uptr Size, uptr Flags,
+                         MapPlatformData *Data = nullptr);
+
+void releasePagesToOS(uptr BaseAddress, uptr Offset, uptr Size,
+                      MapPlatformData *Data = nullptr);
+
+// Internal map & unmap fatal error. This must not call map(). SizeIfOOM shall
+// hold the requested size on an out-of-memory error, 0 otherwise.
+void NORETURN dieOnMapUnmapError(uptr SizeIfOOM = 0);
+
+// Logging related functions.
+
+void setAbortMessage(const char *Message);
+
+struct BlockInfo {
+  uptr BlockBegin;
+  uptr BlockSize;
+  uptr RegionBegin;
+  uptr RegionEnd;
+};
+
+enum class Option : u8 {
+  ReleaseInterval,      // Release to OS interval in milliseconds.
+  MemtagTuning,         // Whether to tune tagging for UAF or overflow.
+  ThreadDisableMemInit, // Whether to disable automatic heap initialization and,
+                        // where possible, memory tagging, on this thread.
+  MaxCacheEntriesCount, // Maximum number of blocks that can be cached.
+  MaxCacheEntrySize,    // Maximum size of a block that can be cached.
+  MaxTSDsCount,         // Number of usable TSDs for the shared registry.
+};
+
+constexpr unsigned char PatternFillByte = 0xAB;
+
+enum FillContentsMode {
+  NoFill = 0,
+  ZeroFill = 1,
+  PatternOrZeroFill = 2 // Pattern fill unless the memory is known to be
+                        // zero-initialized already.
+};
+
+} // namespace scudo
+
+#endif // SCUDO_COMMON_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/crc32_hw.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/crc32_hw.cpp
new file mode 100644
index 0000000000..d13c615498
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/crc32_hw.cpp
@@ -0,0 +1,19 @@
+//===-- crc32_hw.cpp --------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "checksum.h"
+
+namespace scudo {
+
+#if defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+u32 computeHardwareCRC32(u32 Crc, uptr Data) {
+  return static_cast<u32>(CRC32_INTRINSIC(Crc, Data));
+}
+#endif // defined(__CRC32__) || defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+
+} // namespace scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/flags.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/flags.cpp
new file mode 100644
index 0000000000..de5153b288
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/flags.cpp
@@ -0,0 +1,73 @@
+//===-- flags.cpp -----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "flags.h"
+#include "common.h"
+#include "flags_parser.h"
+
+#include "scudo/interface.h"
+
+namespace scudo {
+
+Flags *getFlags() {
+  static Flags F;
+  return &F;
+}
+
+void Flags::setDefaults() {
+#define SCUDO_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
+#include "flags.inc"
+#undef SCUDO_FLAG
+
+#ifdef GWP_ASAN_HOOKS
+#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description)                 \
+  GWP_ASAN_##Name = DefaultValue;
+#include "gwp_asan/options.inc"
+#undef GWP_ASAN_OPTION
+#endif // GWP_ASAN_HOOKS
+}
+
+void registerFlags(FlagParser *Parser, Flags *F) {
+#define SCUDO_FLAG(Type, Name, DefaultValue, Description)                      \
+  Parser->registerFlag(#Name, Description, FlagType::FT_##Type,                \
+                       reinterpret_cast<void *>(&F->Name));
+#include "flags.inc"
+#undef SCUDO_FLAG
+
+#ifdef GWP_ASAN_HOOKS
+#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description)                 \
+  Parser->registerFlag("GWP_ASAN_" #Name, Description, FlagType::FT_##Type,    \
+                       reinterpret_cast<void *>(&F->GWP_ASAN_##Name));
+#include "gwp_asan/options.inc"
+#undef GWP_ASAN_OPTION
+#endif // GWP_ASAN_HOOKS
+}
+
+static const char *getCompileDefinitionScudoDefaultOptions() {
+#ifdef SCUDO_DEFAULT_OPTIONS
+  return STRINGIFY(SCUDO_DEFAULT_OPTIONS);
+#else
+  return "";
+#endif
+}
+
+static const char *getScudoDefaultOptions() {
+  return (&__scudo_default_options) ? __scudo_default_options() : "";
+}
+
+void initFlags() {
+  Flags *F = getFlags();
+  F->setDefaults();
+  FlagParser Parser;
+  registerFlags(&Parser, F);
+  Parser.parseString(getCompileDefinitionScudoDefaultOptions());
+  Parser.parseString(getScudoDefaultOptions());
+  Parser.parseString(getEnv("SCUDO_OPTIONS"));
+}
+
+} // namespace scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/flags.h b/contrib/libs/clang14-rt/lib/scudo/standalone/flags.h
new file mode 100644
index 0000000000..2cd0a5b133
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/flags.h
@@ -0,0 +1,38 @@
+//===-- flags.h -------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_FLAGS_H_
+#define SCUDO_FLAGS_H_
+
+#include "internal_defs.h"
+
+namespace scudo {
+
+struct Flags {
+#define SCUDO_FLAG(Type, Name, DefaultValue, Description) Type Name;
+#include "flags.inc"
+#undef SCUDO_FLAG
+
+#ifdef GWP_ASAN_HOOKS
+#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description)                 \
+  Type GWP_ASAN_##Name;
+#include "gwp_asan/options.inc"
+#undef GWP_ASAN_OPTION
+#endif // GWP_ASAN_HOOKS
+
+  void setDefaults();
+};
+
+Flags *getFlags();
+void initFlags();
+class FlagParser;
+void registerFlags(FlagParser *Parser, Flags *F);
+
+} // namespace scudo
+
+#endif // SCUDO_FLAGS_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/flags.inc b/contrib/libs/clang14-rt/lib/scudo/standalone/flags.inc
new file mode 100644
index 0000000000..690d889b8c
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/flags.inc
@@ -0,0 +1,47 @@
+//===-- flags.inc -----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_FLAG
+#error "Define SCUDO_FLAG prior to including this file!"
+#endif
+
+SCUDO_FLAG(int, quarantine_size_kb, 0,
+           "Size (in kilobytes) of quarantine used to delay the actual "
+           "deallocation of chunks. Lower value may reduce memory usage but "
+           "decrease the effectiveness of the mitigation.")
+
+SCUDO_FLAG(int, thread_local_quarantine_size_kb, 0,
+           "Size (in kilobytes) of per-thread cache used to offload the global "
+           "quarantine. Lower value may reduce memory usage but might increase "
+           "the contention on the global quarantine.")
+
+SCUDO_FLAG(int, quarantine_max_chunk_size, 0,
+           "Size (in bytes) up to which chunks will be quarantined (if lower "
+           "than or equal to).")
+
+SCUDO_FLAG(bool, dealloc_type_mismatch, false,
+           "Terminate on a type mismatch in allocation-deallocation functions, "
+           "eg: malloc/delete, new/free, new/delete[], etc.")
+
+SCUDO_FLAG(bool, delete_size_mismatch, true,
+           "Terminate on a size mismatch between a sized-delete and the actual "
+           "size of a chunk (as provided to new/new[]).")
+
+SCUDO_FLAG(bool, zero_contents, false, "Zero chunk contents on allocation.")
+
+SCUDO_FLAG(bool, pattern_fill_contents, false,
+           "Pattern fill chunk contents on allocation.")
+
+SCUDO_FLAG(bool, may_return_null, true,
+           "Indicate whether the allocator should terminate instead of "
+           "returning NULL in otherwise non-fatal error scenarios, eg: OOM, "
+           "invalid allocation alignments, etc.")
+
+SCUDO_FLAG(int, release_to_os_interval_ms, SCUDO_ANDROID ? INT32_MIN : 5000,
+           "Interval (in milliseconds) at which to attempt release of unused "
+           "memory to the OS. Negative values disable the feature.")
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/flags_parser.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/flags_parser.cpp
new file mode 100644
index 0000000000..be39fcd4f8
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/flags_parser.cpp
@@ -0,0 +1,164 @@
+//===-- flags_parser.cpp ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "flags_parser.h"
+#include "common.h"
+#include "report.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+namespace scudo {
+
+class UnknownFlagsRegistry {
+  static const u32 MaxUnknownFlags = 16;
+  const char *UnknownFlagsNames[MaxUnknownFlags];
+  u32 NumberOfUnknownFlags;
+
+public:
+  void add(const char *Name) {
+    CHECK_LT(NumberOfUnknownFlags, MaxUnknownFlags);
+    UnknownFlagsNames[NumberOfUnknownFlags++] = Name;
+  }
+
+  void report() {
+    if (!NumberOfUnknownFlags)
+      return;
+    Printf("Scudo WARNING: found %d unrecognized flag(s):\n",
+           NumberOfUnknownFlags);
+    for (u32 I = 0; I < NumberOfUnknownFlags; ++I)
+      Printf("    %s\n", UnknownFlagsNames[I]);
+    NumberOfUnknownFlags = 0;
+  }
+};
+static UnknownFlagsRegistry UnknownFlags;
+
+void reportUnrecognizedFlags() { UnknownFlags.report(); }
+
+void FlagParser::printFlagDescriptions() {
+  Printf("Available flags for Scudo:\n");
+  for (u32 I = 0; I < NumberOfFlags; ++I)
+    Printf("\t%s\n\t\t- %s\n", Flags[I].Name, Flags[I].Desc);
+}
+
+static bool isSeparator(char C) {
+  return C == ' ' || C == ',' || C == ':' || C == '\n' || C == '\t' ||
+         C == '\r';
+}
+
+static bool isSeparatorOrNull(char C) { return !C || isSeparator(C); }
+
+void FlagParser::skipWhitespace() {
+  while (isSeparator(Buffer[Pos]))
+    ++Pos;
+}
+
+void FlagParser::parseFlag() {
+  const uptr NameStart = Pos;
+  while (Buffer[Pos] != '=' && !isSeparatorOrNull(Buffer[Pos]))
+    ++Pos;
+  if (Buffer[Pos] != '=')
+    reportError("expected '='");
+  const char *Name = Buffer + NameStart;
+  const uptr ValueStart = ++Pos;
+  const char *Value;
+  if (Buffer[Pos] == '\'' || Buffer[Pos] == '"') {
+    const char Quote = Buffer[Pos++];
+    while (Buffer[Pos] != 0 && Buffer[Pos] != Quote)
+      ++Pos;
+    if (Buffer[Pos] == 0)
+      reportError("unterminated string");
+    Value = Buffer + ValueStart + 1;
+    ++Pos; // consume the closing quote
+  } else {
+    while (!isSeparatorOrNull(Buffer[Pos]))
+      ++Pos;
+    Value = Buffer + ValueStart;
+  }
+  if (!runHandler(Name, Value))
+    reportError("flag parsing failed.");
+}
+
+void FlagParser::parseFlags() {
+  while (true) {
+    skipWhitespace();
+    if (Buffer[Pos] == 0)
+      break;
+    parseFlag();
+  }
+}
+
+void FlagParser::parseString(const char *S) {
+  if (!S)
+    return;
+  // Backup current parser state to allow nested parseString() calls.
+  const char *OldBuffer = Buffer;
+  const uptr OldPos = Pos;
+  Buffer = S;
+  Pos = 0;
+
+  parseFlags();
+
+  Buffer = OldBuffer;
+  Pos = OldPos;
+}
+
+inline bool parseBool(const char *Value, bool *b) {
+  if (strncmp(Value, "0", 1) == 0 || strncmp(Value, "no", 2) == 0 ||
+      strncmp(Value, "false", 5) == 0) {
+    *b = false;
+    return true;
+  }
+  if (strncmp(Value, "1", 1) == 0 || strncmp(Value, "yes", 3) == 0 ||
+      strncmp(Value, "true", 4) == 0) {
+    *b = true;
+    return true;
+  }
+  return false;
+}
+
+bool FlagParser::runHandler(const char *Name, const char *Value) {
+  for (u32 I = 0; I < NumberOfFlags; ++I) {
+    const uptr Len = strlen(Flags[I].Name);
+    if (strncmp(Name, Flags[I].Name, Len) != 0 || Name[Len] != '=')
+      continue;
+    bool Ok = false;
+    switch (Flags[I].Type) {
+    case FlagType::FT_bool:
+      Ok = parseBool(Value, reinterpret_cast<bool *>(Flags[I].Var));
+      if (!Ok)
+        reportInvalidFlag("bool", Value);
+      break;
+    case FlagType::FT_int:
+      char *ValueEnd;
+      *reinterpret_cast<int *>(Flags[I].Var) =
+          static_cast<int>(strtol(Value, &ValueEnd, 10));
+      Ok =
+          *ValueEnd == '"' || *ValueEnd == '\'' || isSeparatorOrNull(*ValueEnd);
+      if (!Ok)
+        reportInvalidFlag("int", Value);
+      break;
+    }
+    return Ok;
+  }
+  // Unrecognized flag. This is not a fatal error, we may print a warning later.
+  UnknownFlags.add(Name);
+  return true;
+}
+
+void FlagParser::registerFlag(const char *Name, const char *Desc, FlagType Type,
+                              void *Var) {
+  CHECK_LT(NumberOfFlags, MaxFlags);
+  Flags[NumberOfFlags].Name = Name;
+  Flags[NumberOfFlags].Desc = Desc;
+  Flags[NumberOfFlags].Type = Type;
+  Flags[NumberOfFlags].Var = Var;
+  ++NumberOfFlags;
+}
+
+} // namespace scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/flags_parser.h b/contrib/libs/clang14-rt/lib/scudo/standalone/flags_parser.h
new file mode 100644
index 0000000000..ba832adbd9
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/flags_parser.h
@@ -0,0 +1,55 @@
+//===-- flags_parser.h ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_FLAGS_PARSER_H_
+#define SCUDO_FLAGS_PARSER_H_
+
+#include "report.h"
+#include "string_utils.h"
+
+#include <stddef.h>
+
+namespace scudo {
+
+enum class FlagType : u8 {
+  FT_bool,
+  FT_int,
+};
+
+class FlagParser {
+public:
+  void registerFlag(const char *Name, const char *Desc, FlagType Type,
+                    void *Var);
+  void parseString(const char *S);
+  void printFlagDescriptions();
+
+private:
+  static const u32 MaxFlags = 20;
+  struct Flag {
+    const char *Name;
+    const char *Desc;
+    FlagType Type;
+    void *Var;
+  } Flags[MaxFlags];
+
+  u32 NumberOfFlags = 0;
+  const char *Buffer = nullptr;
+  uptr Pos = 0;
+
+  void reportFatalError(const char *Error);
+  void skipWhitespace();
+  void parseFlags();
+  void parseFlag();
+  bool runHandler(const char *Name, const char *Value);
+};
+
+void reportUnrecognizedFlags();
+
+} // namespace scudo
+
+#endif // SCUDO_FLAGS_PARSER_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/fuchsia.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/fuchsia.cpp
new file mode 100644
index 0000000000..4290616fb1
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/fuchsia.cpp
@@ -0,0 +1,202 @@
+//===-- fuchsia.cpp ---------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "platform.h"
+
+#if SCUDO_FUCHSIA
+
+#include "common.h"
+#include "mutex.h"
+#include "string_utils.h"
+
+#error #include <lib/sync/mutex.h> // for sync_mutex_t
+#include <stdlib.h>         // for getenv()
+#error #include <zircon/compiler.h>
+#error #include <zircon/sanitizer.h>
+#error #include <zircon/syscalls.h>
+
+namespace scudo {
+
+uptr getPageSize() { return _zx_system_get_page_size(); }
+
+void NORETURN die() { __builtin_trap(); }
+
+// We zero-initialize the Extra parameter of map(), make sure this is consistent
+// with ZX_HANDLE_INVALID.
+static_assert(ZX_HANDLE_INVALID == 0, "");
+
+static void *allocateVmar(uptr Size, MapPlatformData *Data, bool AllowNoMem) {
+  // Only scenario so far.
+  DCHECK(Data);
+  DCHECK_EQ(Data->Vmar, ZX_HANDLE_INVALID);
+
+  const zx_status_t Status = _zx_vmar_allocate(
+      _zx_vmar_root_self(),
+      ZX_VM_CAN_MAP_READ | ZX_VM_CAN_MAP_WRITE | ZX_VM_CAN_MAP_SPECIFIC, 0,
+      Size, &Data->Vmar, &Data->VmarBase);
+  if (UNLIKELY(Status != ZX_OK)) {
+    if (Status != ZX_ERR_NO_MEMORY || !AllowNoMem)
+      dieOnMapUnmapError(Status == ZX_ERR_NO_MEMORY ? Size : 0);
+    return nullptr;
+  }
+  return reinterpret_cast<void *>(Data->VmarBase);
+}
+
+void *map(void *Addr, uptr Size, const char *Name, uptr Flags,
+          MapPlatformData *Data) {
+  DCHECK_EQ(Size % getPageSizeCached(), 0);
+  const bool AllowNoMem = !!(Flags & MAP_ALLOWNOMEM);
+
+  // For MAP_NOACCESS, just allocate a Vmar and return.
+  if (Flags & MAP_NOACCESS)
+    return allocateVmar(Size, Data, AllowNoMem);
+
+  const zx_handle_t Vmar = Data ? Data->Vmar : _zx_vmar_root_self();
+  CHECK_NE(Vmar, ZX_HANDLE_INVALID);
+
+  zx_status_t Status;
+  zx_handle_t Vmo;
+  uint64_t VmoSize = 0;
+  if (Data && Data->Vmo != ZX_HANDLE_INVALID) {
+    // If a Vmo was specified, it's a resize operation.
+    CHECK(Addr);
+    DCHECK(Flags & MAP_RESIZABLE);
+    Vmo = Data->Vmo;
+    VmoSize = Data->VmoSize;
+    Status = _zx_vmo_set_size(Vmo, VmoSize + Size);
+    if (Status != ZX_OK) {
+      if (Status != ZX_ERR_NO_MEMORY || !AllowNoMem)
+        dieOnMapUnmapError(Status == ZX_ERR_NO_MEMORY ? Size : 0);
+      return nullptr;
+    }
+  } else {
+    // Otherwise, create a Vmo and set its name.
+    Status = _zx_vmo_create(Size, ZX_VMO_RESIZABLE, &Vmo);
+    if (UNLIKELY(Status != ZX_OK)) {
+      if (Status != ZX_ERR_NO_MEMORY || !AllowNoMem)
+        dieOnMapUnmapError(Status == ZX_ERR_NO_MEMORY ? Size : 0);
+      return nullptr;
+    }
+    _zx_object_set_property(Vmo, ZX_PROP_NAME, Name, strlen(Name));
+  }
+
+  uintptr_t P;
+  zx_vm_option_t MapFlags =
+      ZX_VM_PERM_READ | ZX_VM_PERM_WRITE | ZX_VM_ALLOW_FAULTS;
+  const uint64_t Offset =
+      Addr ? reinterpret_cast<uintptr_t>(Addr) - Data->VmarBase : 0;
+  if (Offset)
+    MapFlags |= ZX_VM_SPECIFIC;
+  Status = _zx_vmar_map(Vmar, MapFlags, Offset, Vmo, VmoSize, Size, &P);
+  // No need to track the Vmo if we don't intend on resizing it. Close it.
+  if (Flags & MAP_RESIZABLE) {
+    DCHECK(Data);
+    if (Data->Vmo == ZX_HANDLE_INVALID)
+      Data->Vmo = Vmo;
+    else
+      DCHECK_EQ(Data->Vmo, Vmo);
+  } else {
+    CHECK_EQ(_zx_handle_close(Vmo), ZX_OK);
+  }
+  if (UNLIKELY(Status != ZX_OK)) {
+    if (Status != ZX_ERR_NO_MEMORY || !AllowNoMem)
+      dieOnMapUnmapError(Status == ZX_ERR_NO_MEMORY ? Size : 0);
+    return nullptr;
+  }
+  if (Data)
+    Data->VmoSize += Size;
+
+  return reinterpret_cast<void *>(P);
+}
+
+void unmap(void *Addr, uptr Size, uptr Flags, MapPlatformData *Data) {
+  if (Flags & UNMAP_ALL) {
+    DCHECK_NE(Data, nullptr);
+    const zx_handle_t Vmar = Data->Vmar;
+    DCHECK_NE(Vmar, _zx_vmar_root_self());
+    // Destroying the vmar effectively unmaps the whole mapping.
+    CHECK_EQ(_zx_vmar_destroy(Vmar), ZX_OK);
+    CHECK_EQ(_zx_handle_close(Vmar), ZX_OK);
+  } else {
+    const zx_handle_t Vmar = Data ? Data->Vmar : _zx_vmar_root_self();
+    const zx_status_t Status =
+        _zx_vmar_unmap(Vmar, reinterpret_cast<uintptr_t>(Addr), Size);
+    if (UNLIKELY(Status != ZX_OK))
+      dieOnMapUnmapError();
+  }
+  if (Data) {
+    if (Data->Vmo != ZX_HANDLE_INVALID)
+      CHECK_EQ(_zx_handle_close(Data->Vmo), ZX_OK);
+    memset(Data, 0, sizeof(*Data));
+  }
+}
+
+void setMemoryPermission(UNUSED uptr Addr, UNUSED uptr Size, UNUSED uptr Flags,
+                         UNUSED MapPlatformData *Data) {
+  const zx_vm_option_t Prot =
+      (Flags & MAP_NOACCESS) ? 0 : (ZX_VM_PERM_READ | ZX_VM_PERM_WRITE);
+  DCHECK(Data);
+  DCHECK_NE(Data->Vmar, ZX_HANDLE_INVALID);
+  if (_zx_vmar_protect(Data->Vmar, Prot, Addr, Size) != ZX_OK)
+    dieOnMapUnmapError();
+}
+
+void releasePagesToOS(UNUSED uptr BaseAddress, uptr Offset, uptr Size,
+                      MapPlatformData *Data) {
+  DCHECK(Data);
+  DCHECK_NE(Data->Vmar, ZX_HANDLE_INVALID);
+  DCHECK_NE(Data->Vmo, ZX_HANDLE_INVALID);
+  const zx_status_t Status =
+      _zx_vmo_op_range(Data->Vmo, ZX_VMO_OP_DECOMMIT, Offset, Size, NULL, 0);
+  CHECK_EQ(Status, ZX_OK);
+}
+
+const char *getEnv(const char *Name) { return getenv(Name); }
+
+// Note: we need to flag these methods with __TA_NO_THREAD_SAFETY_ANALYSIS
+// because the Fuchsia implementation of sync_mutex_t has clang thread safety
+// annotations. Were we to apply proper capability annotations to the top level
+// HybridMutex class itself, they would not be needed. As it stands, the
+// thread analysis thinks that we are locking the mutex and accidentally leaving
+// it locked on the way out.
+bool HybridMutex::tryLock() __TA_NO_THREAD_SAFETY_ANALYSIS {
+  // Size and alignment must be compatible between both types.
+  return sync_mutex_trylock(&M) == ZX_OK;
+}
+
+void HybridMutex::lockSlow() __TA_NO_THREAD_SAFETY_ANALYSIS {
+  sync_mutex_lock(&M);
+}
+
+void HybridMutex::unlock() __TA_NO_THREAD_SAFETY_ANALYSIS {
+  sync_mutex_unlock(&M);
+}
+
+u64 getMonotonicTime() { return _zx_clock_get_monotonic(); }
+
+u32 getNumberOfCPUs() { return _zx_system_get_num_cpus(); }
+
+u32 getThreadID() { return 0; }
+
+bool getRandom(void *Buffer, uptr Length, UNUSED bool Blocking) {
+  static_assert(MaxRandomLength <= ZX_CPRNG_DRAW_MAX_LEN, "");
+  if (UNLIKELY(!Buffer || !Length || Length > MaxRandomLength))
+    return false;
+  _zx_cprng_draw(Buffer, Length);
+  return true;
+}
+
+void outputRaw(const char *Buffer) {
+  __sanitizer_log_write(Buffer, strlen(Buffer));
+}
+
+void setAbortMessage(const char *Message) {}
+
+} // namespace scudo
+
+#endif // SCUDO_FUCHSIA
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/fuchsia.h b/contrib/libs/clang14-rt/lib/scudo/standalone/fuchsia.h
new file mode 100644
index 0000000000..a69cfdc23c
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/fuchsia.h
@@ -0,0 +1,31 @@
+//===-- fuchsia.h -----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_FUCHSIA_H_
+#define SCUDO_FUCHSIA_H_
+
+#include "platform.h"
+
+#if SCUDO_FUCHSIA
+
+#error #include <zircon/process.h>
+
+namespace scudo {
+
+struct MapPlatformData {
+  zx_handle_t Vmar;
+  zx_handle_t Vmo;
+  uintptr_t VmarBase;
+  uint64_t VmoSize;
+};
+
+} // namespace scudo
+
+#endif // SCUDO_FUCHSIA
+
+#endif // SCUDO_FUCHSIA_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/include/scudo/interface.h b/contrib/libs/clang14-rt/lib/scudo/standalone/include/scudo/interface.h
new file mode 100644
index 0000000000..9b9a84623c
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/include/scudo/interface.h
@@ -0,0 +1,160 @@
+//===-- scudo/interface.h ---------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_INTERFACE_H_
+#define SCUDO_INTERFACE_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+extern "C" {
+
+__attribute__((weak)) const char *__scudo_default_options();
+
+// Post-allocation & pre-deallocation hooks.
+// They must be thread-safe and not use heap related functions.
+__attribute__((weak)) void __scudo_allocate_hook(void *ptr, size_t size);
+__attribute__((weak)) void __scudo_deallocate_hook(void *ptr);
+
+void __scudo_print_stats(void);
+
+typedef void (*iterate_callback)(uintptr_t base, size_t size, void *arg);
+
+// Determine the likely cause of a tag check fault or other memory protection
+// error on a system with memory tagging support. The results are returned via
+// the error_info data structure. Up to three possible causes are returned in
+// the reports array, in decreasing order of probability. The remaining elements
+// of reports are zero-initialized.
+//
+// This function may be called from a different process from the one that
+// crashed. In this case, various data structures must be copied from the
+// crashing process to the process that analyzes the crash.
+//
+// This interface is not guaranteed to be stable and may change at any time.
+// Furthermore, the version of scudo in the crashing process must be the same as
+// the version in the process that analyzes the crash.
+//
+// fault_addr is the fault address. On aarch64 this is available in the system
+// register FAR_ELx, or siginfo.si_addr in Linux 5.11 or above. This address
+// must include the pointer tag; this is available if SA_EXPOSE_TAGBITS was set
+// in sigaction.sa_flags when the signal handler was registered. Note that the
+// kernel strips the tag from the field sigcontext.fault_address, so this
+// address is not suitable to be passed as fault_addr.
+//
+// stack_depot is a pointer to the stack depot data structure, which may be
+// obtained by calling the function __scudo_get_stack_depot_addr() in the
+// crashing process. The size of the stack depot is available by calling the
+// function __scudo_get_stack_depot_size().
+//
+// region_info is a pointer to the region info data structure, which may be
+// obtained by calling the function __scudo_get_region_info_addr() in the
+// crashing process. The size of the region info is available by calling the
+// function __scudo_get_region_info_size().
+//
+// memory is a pointer to a region of memory surrounding the fault address.
+// The more memory available via this pointer, the more likely it is that the
+// function will be able to analyze a crash correctly. It is recommended to
+// provide an amount of memory equal to 16 * the primary allocator's largest
+// size class either side of the fault address.
+//
+// memory_tags is a pointer to an array of memory tags for the memory accessed
+// via memory. Each byte of this array corresponds to a region of memory of size
+// equal to the architecturally defined memory tag granule size (16 on aarch64).
+//
+// memory_addr is the start address of memory in the crashing process's address
+// space.
+//
+// memory_size is the size of the memory region referred to by the memory
+// pointer.
+void __scudo_get_error_info(struct scudo_error_info *error_info,
+                            uintptr_t fault_addr, const char *stack_depot,
+                            const char *region_info, const char *ring_buffer,
+                            const char *memory, const char *memory_tags,
+                            uintptr_t memory_addr, size_t memory_size);
+
+enum scudo_error_type {
+  UNKNOWN,
+  USE_AFTER_FREE,
+  BUFFER_OVERFLOW,
+  BUFFER_UNDERFLOW,
+};
+
+struct scudo_error_report {
+  enum scudo_error_type error_type;
+
+  uintptr_t allocation_address;
+  uintptr_t allocation_size;
+
+  uint32_t allocation_tid;
+  uintptr_t allocation_trace[64];
+
+  uint32_t deallocation_tid;
+  uintptr_t deallocation_trace[64];
+};
+
+struct scudo_error_info {
+  struct scudo_error_report reports[3];
+};
+
+const char *__scudo_get_stack_depot_addr();
+size_t __scudo_get_stack_depot_size();
+
+const char *__scudo_get_region_info_addr();
+size_t __scudo_get_region_info_size();
+
+const char *__scudo_get_ring_buffer_addr();
+size_t __scudo_get_ring_buffer_size();
+
+#ifndef M_DECAY_TIME
+#define M_DECAY_TIME -100
+#endif
+
+#ifndef M_PURGE
+#define M_PURGE -101
+#endif
+
+// Tune the allocator's choice of memory tags to make it more likely that
+// a certain class of memory errors will be detected. The value argument should
+// be one of the M_MEMTAG_TUNING_* constants below.
+#ifndef M_MEMTAG_TUNING
+#define M_MEMTAG_TUNING -102
+#endif
+
+// Per-thread memory initialization tuning. The value argument should be one of:
+// 1: Disable automatic heap initialization and, where possible, memory tagging,
+//    on this thread.
+// 0: Normal behavior.
+#ifndef M_THREAD_DISABLE_MEM_INIT
+#define M_THREAD_DISABLE_MEM_INIT -103
+#endif
+
+#ifndef M_CACHE_COUNT_MAX
+#define M_CACHE_COUNT_MAX -200
+#endif
+
+#ifndef M_CACHE_SIZE_MAX
+#define M_CACHE_SIZE_MAX -201
+#endif
+
+#ifndef M_TSDS_COUNT_MAX
+#define M_TSDS_COUNT_MAX -202
+#endif
+
+// Tune for buffer overflows.
+#ifndef M_MEMTAG_TUNING_BUFFER_OVERFLOW
+#define M_MEMTAG_TUNING_BUFFER_OVERFLOW 0
+#endif
+
+// Tune for use-after-free.
+#ifndef M_MEMTAG_TUNING_UAF
+#define M_MEMTAG_TUNING_UAF 1
+#endif
+
+} // extern "C"
+
+#endif // SCUDO_INTERFACE_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/internal_defs.h b/contrib/libs/clang14-rt/lib/scudo/standalone/internal_defs.h
new file mode 100644
index 0000000000..621fc9c45e
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/internal_defs.h
@@ -0,0 +1,166 @@
+//===-- internal_defs.h -----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_INTERNAL_DEFS_H_
+#define SCUDO_INTERNAL_DEFS_H_
+
+#include "platform.h"
+
+#include <stdint.h>
+
+#ifndef SCUDO_DEBUG
+#define SCUDO_DEBUG 0
+#endif
+
+#define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))
+
+// String related macros.
+
+#define STRINGIFY_(S) #S
+#define STRINGIFY(S) STRINGIFY_(S)
+#define CONCATENATE_(S, C) S##C
+#define CONCATENATE(S, C) CONCATENATE_(S, C)
+
+// Attributes & builtins related macros.
+
+#define INTERFACE __attribute__((visibility("default")))
+#define HIDDEN __attribute__((visibility("hidden")))
+#define WEAK __attribute__((weak))
+#define ALWAYS_INLINE inline __attribute__((always_inline))
+#define ALIAS(X) __attribute__((alias(X)))
+#define FORMAT(F, A) __attribute__((format(printf, F, A)))
+#define NOINLINE __attribute__((noinline))
+#define NORETURN __attribute__((noreturn))
+#define LIKELY(X) __builtin_expect(!!(X), 1)
+#define UNLIKELY(X) __builtin_expect(!!(X), 0)
+#if defined(__i386__) || defined(__x86_64__)
+// __builtin_prefetch(X) generates prefetchnt0 on x86
+#define PREFETCH(X) __asm__("prefetchnta (%0)" : : "r"(X))
+#else
+#define PREFETCH(X) __builtin_prefetch(X)
+#endif
+#define UNUSED __attribute__((unused))
+#define USED __attribute__((used))
+#define NOEXCEPT noexcept
+
+// This check is only available on Clang. This is essentially an alias of
+// C++20's 'constinit' specifier which will take care of this when (if?) we can
+// ask all libc's that use Scudo to compile us with C++20. Dynamic
+// initialization is bad; Scudo is designed to be lazy-initializated on the
+// first call to malloc/free (and friends), and this generally happens in the
+// loader somewhere in libdl's init. After the loader is done, control is
+// transferred to libc's initialization, and the dynamic initializers are run.
+// If there's a dynamic initializer for Scudo, then it will clobber the
+// already-initialized Scudo, and re-initialize all its members back to default
+// values, causing various explosions. Unfortunately, marking
+// scudo::Allocator<>'s constructor as 'constexpr' isn't sufficient to prevent
+// dynamic initialization, as default initialization is fine under 'constexpr'
+// (but not 'constinit'). Clang at -O0, and gcc at all opt levels will emit a
+// dynamic initializer for any constant-initialized variables if there is a mix
+// of default-initialized and constant-initialized variables.
+//
+// If you're looking at this because your build failed, you probably introduced
+// a new member to scudo::Allocator<> (possibly transiently) that didn't have an
+// initializer. The fix is easy - just add one.
+#if defined(__has_attribute)
+#if __has_attribute(require_constant_initialization)
+#define SCUDO_REQUIRE_CONSTANT_INITIALIZATION                                  \
+  __attribute__((__require_constant_initialization__))
+#else
+#define SCUDO_REQUIRE_CONSTANT_INITIALIZATION
+#endif
+#endif
+
+namespace scudo {
+
+typedef uintptr_t uptr;
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+typedef intptr_t sptr;
+typedef int8_t s8;
+typedef int16_t s16;
+typedef int32_t s32;
+typedef int64_t s64;
+
+// The following two functions have platform specific implementations.
+void outputRaw(const char *Buffer);
+void NORETURN die();
+
+#define RAW_CHECK_MSG(Expr, Msg)                                               \
+  do {                                                                         \
+    if (UNLIKELY(!(Expr))) {                                                   \
+      outputRaw(Msg);                                                          \
+      die();                                                                   \
+    }                                                                          \
+  } while (false)
+
+#define RAW_CHECK(Expr) RAW_CHECK_MSG(Expr, #Expr)
+
+void NORETURN reportCheckFailed(const char *File, int Line,
+                                const char *Condition, u64 Value1, u64 Value2);
+#define CHECK_IMPL(C1, Op, C2)                                                 \
+  do {                                                                         \
+    if (UNLIKELY(!(C1 Op C2))) {                                               \
+      scudo::reportCheckFailed(__FILE__, __LINE__, #C1 " " #Op " " #C2,        \
+                               (scudo::u64)C1, (scudo::u64)C2);                \
+      scudo::die();                                                            \
+    }                                                                          \
+  } while (false)
+
+#define CHECK(A) CHECK_IMPL((A), !=, 0)
+#define CHECK_EQ(A, B) CHECK_IMPL((A), ==, (B))
+#define CHECK_NE(A, B) CHECK_IMPL((A), !=, (B))
+#define CHECK_LT(A, B) CHECK_IMPL((A), <, (B))
+#define CHECK_LE(A, B) CHECK_IMPL((A), <=, (B))
+#define CHECK_GT(A, B) CHECK_IMPL((A), >, (B))
+#define CHECK_GE(A, B) CHECK_IMPL((A), >=, (B))
+
+#if SCUDO_DEBUG
+#define DCHECK(A) CHECK(A)
+#define DCHECK_EQ(A, B) CHECK_EQ(A, B)
+#define DCHECK_NE(A, B) CHECK_NE(A, B)
+#define DCHECK_LT(A, B) CHECK_LT(A, B)
+#define DCHECK_LE(A, B) CHECK_LE(A, B)
+#define DCHECK_GT(A, B) CHECK_GT(A, B)
+#define DCHECK_GE(A, B) CHECK_GE(A, B)
+#else
+#define DCHECK(A)                                                              \
+  do {                                                                         \
+  } while (false)
+#define DCHECK_EQ(A, B)                                                        \
+  do {                                                                         \
+  } while (false)
+#define DCHECK_NE(A, B)                                                        \
+  do {                                                                         \
+  } while (false)
+#define DCHECK_LT(A, B)                                                        \
+  do {                                                                         \
+  } while (false)
+#define DCHECK_LE(A, B)                                                        \
+  do {                                                                         \
+  } while (false)
+#define DCHECK_GT(A, B)                                                        \
+  do {                                                                         \
+  } while (false)
+#define DCHECK_GE(A, B)                                                        \
+  do {                                                                         \
+  } while (false)
+#endif
+
+// The superfluous die() call effectively makes this macro NORETURN.
+#define UNREACHABLE(Msg)                                                       \
+  do {                                                                         \
+    CHECK(0 && Msg);                                                           \
+    die();                                                                     \
+  } while (0)
+
+} // namespace scudo
+
+#endif // SCUDO_INTERNAL_DEFS_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/linux.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/linux.cpp
new file mode 100644
index 0000000000..c77c1bb600
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/linux.cpp
@@ -0,0 +1,218 @@
+//===-- linux.cpp -----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "platform.h"
+
+#if SCUDO_LINUX
+
+#include "common.h"
+#include "linux.h"
+#include "mutex.h"
+#include "string_utils.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/futex.h>
+#include <sched.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <time.h>
+#include <unistd.h>
+
+#if SCUDO_ANDROID
+#include <sys/prctl.h>
+// Definitions of prctl arguments to set a vma name in Android kernels.
+#define ANDROID_PR_SET_VMA 0x53564d41
+#define ANDROID_PR_SET_VMA_ANON_NAME 0
+#endif
+
+namespace scudo {
+
+uptr getPageSize() { return static_cast<uptr>(sysconf(_SC_PAGESIZE)); }
+
+void NORETURN die() { abort(); }
+
+void *map(void *Addr, uptr Size, UNUSED const char *Name, uptr Flags,
+          UNUSED MapPlatformData *Data) {
+  int MmapFlags = MAP_PRIVATE | MAP_ANONYMOUS;
+  int MmapProt;
+  if (Flags & MAP_NOACCESS) {
+    MmapFlags |= MAP_NORESERVE;
+    MmapProt = PROT_NONE;
+  } else {
+    MmapProt = PROT_READ | PROT_WRITE;
+  }
+#if defined(__aarch64__)
+#ifndef PROT_MTE
+#define PROT_MTE 0x20
+#endif
+  if (Flags & MAP_MEMTAG)
+    MmapProt |= PROT_MTE;
+#endif
+  if (Addr)
+    MmapFlags |= MAP_FIXED;
+  void *P = mmap(Addr, Size, MmapProt, MmapFlags, -1, 0);
+  if (P == MAP_FAILED) {
+    if (!(Flags & MAP_ALLOWNOMEM) || errno != ENOMEM)
+      dieOnMapUnmapError(errno == ENOMEM ? Size : 0);
+    return nullptr;
+  }
+#if SCUDO_ANDROID
+  if (Name)
+    prctl(ANDROID_PR_SET_VMA, ANDROID_PR_SET_VMA_ANON_NAME, P, Size, Name);
+#endif
+  return P;
+}
+
+void unmap(void *Addr, uptr Size, UNUSED uptr Flags,
+           UNUSED MapPlatformData *Data) {
+  if (munmap(Addr, Size) != 0)
+    dieOnMapUnmapError();
+}
+
+void setMemoryPermission(uptr Addr, uptr Size, uptr Flags,
+                         UNUSED MapPlatformData *Data) {
+  int Prot = (Flags & MAP_NOACCESS) ? PROT_NONE : (PROT_READ | PROT_WRITE);
+  if (mprotect(reinterpret_cast<void *>(Addr), Size, Prot) != 0)
+    dieOnMapUnmapError();
+}
+
+void releasePagesToOS(uptr BaseAddress, uptr Offset, uptr Size,
+                      UNUSED MapPlatformData *Data) {
+  void *Addr = reinterpret_cast<void *>(BaseAddress + Offset);
+
+  while (madvise(Addr, Size, MADV_DONTNEED) == -1 && errno == EAGAIN) {
+  }
+}
+
+// Calling getenv should be fine (c)(tm) at any time.
+const char *getEnv(const char *Name) { return getenv(Name); }
+
+namespace {
+enum State : u32 { Unlocked = 0, Locked = 1, Sleeping = 2 };
+}
+
+bool HybridMutex::tryLock() {
+  return atomic_compare_exchange(&M, Unlocked, Locked) == Unlocked;
+}
+
+// The following is based on https://akkadia.org/drepper/futex.pdf.
+void HybridMutex::lockSlow() {
+  u32 V = atomic_compare_exchange(&M, Unlocked, Locked);
+  if (V == Unlocked)
+    return;
+  if (V != Sleeping)
+    V = atomic_exchange(&M, Sleeping, memory_order_acquire);
+  while (V != Unlocked) {
+    syscall(SYS_futex, reinterpret_cast<uptr>(&M), FUTEX_WAIT_PRIVATE, Sleeping,
+            nullptr, nullptr, 0);
+    V = atomic_exchange(&M, Sleeping, memory_order_acquire);
+  }
+}
+
+void HybridMutex::unlock() {
+  if (atomic_fetch_sub(&M, 1U, memory_order_release) != Locked) {
+    atomic_store(&M, Unlocked, memory_order_release);
+    syscall(SYS_futex, reinterpret_cast<uptr>(&M), FUTEX_WAKE_PRIVATE, 1,
+            nullptr, nullptr, 0);
+  }
+}
+
+u64 getMonotonicTime() {
+  timespec TS;
+  clock_gettime(CLOCK_MONOTONIC, &TS);
+  return static_cast<u64>(TS.tv_sec) * (1000ULL * 1000 * 1000) +
+         static_cast<u64>(TS.tv_nsec);
+}
+
+u32 getNumberOfCPUs() {
+  cpu_set_t CPUs;
+  // sched_getaffinity can fail for a variety of legitimate reasons (lack of
+  // CAP_SYS_NICE, syscall filtering, etc), in which case we shall return 0.
+  if (sched_getaffinity(0, sizeof(cpu_set_t), &CPUs) != 0)
+    return 0;
+  return static_cast<u32>(CPU_COUNT(&CPUs));
+}
+
+u32 getThreadID() {
+#if SCUDO_ANDROID
+  return static_cast<u32>(gettid());
+#else
+  return static_cast<u32>(syscall(SYS_gettid));
+#endif
+}
+
+// Blocking is possibly unused if the getrandom block is not compiled in.
+bool getRandom(void *Buffer, uptr Length, UNUSED bool Blocking) {
+  if (!Buffer || !Length || Length > MaxRandomLength)
+    return false;
+  ssize_t ReadBytes;
+#if defined(SYS_getrandom)
+#if !defined(GRND_NONBLOCK)
+#define GRND_NONBLOCK 1
+#endif
+  // Up to 256 bytes, getrandom will not be interrupted.
+  ReadBytes =
+      syscall(SYS_getrandom, Buffer, Length, Blocking ? 0 : GRND_NONBLOCK);
+  if (ReadBytes == static_cast<ssize_t>(Length))
+    return true;
+#endif // defined(SYS_getrandom)
+  // Up to 256 bytes, a read off /dev/urandom will not be interrupted.
+  // Blocking is moot here, O_NONBLOCK has no effect when opening /dev/urandom.
+  const int FileDesc = open("/dev/urandom", O_RDONLY);
+  if (FileDesc == -1)
+    return false;
+  ReadBytes = read(FileDesc, Buffer, Length);
+  close(FileDesc);
+  return (ReadBytes == static_cast<ssize_t>(Length));
+}
+
+// Allocation free syslog-like API.
+extern "C" WEAK int async_safe_write_log(int pri, const char *tag,
+                                         const char *msg);
+
+void outputRaw(const char *Buffer) {
+  if (&async_safe_write_log) {
+    constexpr s32 AndroidLogInfo = 4;
+    constexpr uptr MaxLength = 1024U;
+    char LocalBuffer[MaxLength];
+    while (strlen(Buffer) > MaxLength) {
+      uptr P;
+      for (P = MaxLength - 1; P > 0; P--) {
+        if (Buffer[P] == '\n') {
+          memcpy(LocalBuffer, Buffer, P);
+          LocalBuffer[P] = '\0';
+          async_safe_write_log(AndroidLogInfo, "scudo", LocalBuffer);
+          Buffer = &Buffer[P + 1];
+          break;
+        }
+      }
+      // If no newline was found, just log the buffer.
+      if (P == 0)
+        break;
+    }
+    async_safe_write_log(AndroidLogInfo, "scudo", Buffer);
+  } else {
+    (void)write(2, Buffer, strlen(Buffer));
+  }
+}
+
+extern "C" WEAK void android_set_abort_message(const char *);
+
+void setAbortMessage(const char *Message) {
+  if (&android_set_abort_message)
+    android_set_abort_message(Message);
+}
+
+} // namespace scudo
+
+#endif // SCUDO_LINUX
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/linux.h b/contrib/libs/clang14-rt/lib/scudo/standalone/linux.h
new file mode 100644
index 0000000000..72acb6da83
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/linux.h
@@ -0,0 +1,25 @@
+//===-- linux.h -------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_LINUX_H_
+#define SCUDO_LINUX_H_
+
+#include "platform.h"
+
+#if SCUDO_LINUX
+
+namespace scudo {
+
+// MapPlatformData is unused on Linux, define it as a minimally sized structure.
+struct MapPlatformData {};
+
+} // namespace scudo
+
+#endif // SCUDO_LINUX
+
+#endif // SCUDO_LINUX_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/list.h b/contrib/libs/clang14-rt/lib/scudo/standalone/list.h
new file mode 100644
index 0000000000..1ac93c2f65
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/list.h
@@ -0,0 +1,228 @@
+//===-- list.h --------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_LIST_H_
+#define SCUDO_LIST_H_
+
+#include "internal_defs.h"
+
+namespace scudo {
+
+// Intrusive POD singly and doubly linked list.
+// An object with all zero fields should represent a valid empty list. clear()
+// should be called on all non-zero-initialized objects before using.
+
+template <class T> class IteratorBase {
+public:
+  explicit IteratorBase(T *CurrentT) : Current(CurrentT) {}
+  IteratorBase &operator++() {
+    Current = Current->Next;
+    return *this;
+  }
+  bool operator!=(IteratorBase Other) const { return Current != Other.Current; }
+  T &operator*() { return *Current; }
+
+private:
+  T *Current;
+};
+
+template <class T> struct IntrusiveList {
+  bool empty() const { return Size == 0; }
+  uptr size() const { return Size; }
+
+  T *front() { return First; }
+  const T *front() const { return First; }
+  T *back() { return Last; }
+  const T *back() const { return Last; }
+
+  void clear() {
+    First = Last = nullptr;
+    Size = 0;
+  }
+
+  typedef IteratorBase<T> Iterator;
+  typedef IteratorBase<const T> ConstIterator;
+
+  Iterator begin() { return Iterator(First); }
+  Iterator end() { return Iterator(nullptr); }
+
+  ConstIterator begin() const { return ConstIterator(First); }
+  ConstIterator end() const { return ConstIterator(nullptr); }
+
+  void checkConsistency() const;
+
+protected:
+  uptr Size = 0;
+  T *First = nullptr;
+  T *Last = nullptr;
+};
+
+template <class T> void IntrusiveList<T>::checkConsistency() const {
+  if (Size == 0) {
+    CHECK_EQ(First, nullptr);
+    CHECK_EQ(Last, nullptr);
+  } else {
+    uptr Count = 0;
+    for (T *I = First;; I = I->Next) {
+      Count++;
+      if (I == Last)
+        break;
+    }
+    CHECK_EQ(this->size(), Count);
+    CHECK_EQ(Last->Next, nullptr);
+  }
+}
+
+template <class T> struct SinglyLinkedList : public IntrusiveList<T> {
+  using IntrusiveList<T>::First;
+  using IntrusiveList<T>::Last;
+  using IntrusiveList<T>::Size;
+  using IntrusiveList<T>::empty;
+
+  void push_back(T *X) {
+    X->Next = nullptr;
+    if (empty())
+      First = X;
+    else
+      Last->Next = X;
+    Last = X;
+    Size++;
+  }
+
+  void push_front(T *X) {
+    if (empty())
+      Last = X;
+    X->Next = First;
+    First = X;
+    Size++;
+  }
+
+  void pop_front() {
+    DCHECK(!empty());
+    First = First->Next;
+    if (!First)
+      Last = nullptr;
+    Size--;
+  }
+
+  void extract(T *Prev, T *X) {
+    DCHECK(!empty());
+    DCHECK_NE(Prev, nullptr);
+    DCHECK_NE(X, nullptr);
+    DCHECK_EQ(Prev->Next, X);
+    Prev->Next = X->Next;
+    if (Last == X)
+      Last = Prev;
+    Size--;
+  }
+
+  void append_back(SinglyLinkedList<T> *L) {
+    DCHECK_NE(this, L);
+    if (L->empty())
+      return;
+    if (empty()) {
+      *this = *L;
+    } else {
+      Last->Next = L->First;
+      Last = L->Last;
+      Size += L->size();
+    }
+    L->clear();
+  }
+};
+
+template <class T> struct DoublyLinkedList : IntrusiveList<T> {
+  using IntrusiveList<T>::First;
+  using IntrusiveList<T>::Last;
+  using IntrusiveList<T>::Size;
+  using IntrusiveList<T>::empty;
+
+  void push_front(T *X) {
+    X->Prev = nullptr;
+    if (empty()) {
+      Last = X;
+    } else {
+      DCHECK_EQ(First->Prev, nullptr);
+      First->Prev = X;
+    }
+    X->Next = First;
+    First = X;
+    Size++;
+  }
+
+  // Inserts X before Y.
+  void insert(T *X, T *Y) {
+    if (Y == First)
+      return push_front(X);
+    T *Prev = Y->Prev;
+    // This is a hard CHECK to ensure consistency in the event of an intentional
+    // corruption of Y->Prev, to prevent a potential write-{4,8}.
+    CHECK_EQ(Prev->Next, Y);
+    Prev->Next = X;
+    X->Prev = Prev;
+    X->Next = Y;
+    Y->Prev = X;
+    Size++;
+  }
+
+  void push_back(T *X) {
+    X->Next = nullptr;
+    if (empty()) {
+      First = X;
+    } else {
+      DCHECK_EQ(Last->Next, nullptr);
+      Last->Next = X;
+    }
+    X->Prev = Last;
+    Last = X;
+    Size++;
+  }
+
+  void pop_front() {
+    DCHECK(!empty());
+    First = First->Next;
+    if (!First)
+      Last = nullptr;
+    else
+      First->Prev = nullptr;
+    Size--;
+  }
+
+  // The consistency of the adjacent links is aggressively checked in order to
+  // catch potential corruption attempts, that could yield a mirrored
+  // write-{4,8} primitive. nullptr checks are deemed less vital.
+  void remove(T *X) {
+    T *Prev = X->Prev;
+    T *Next = X->Next;
+    if (Prev) {
+      CHECK_EQ(Prev->Next, X);
+      Prev->Next = Next;
+    }
+    if (Next) {
+      CHECK_EQ(Next->Prev, X);
+      Next->Prev = Prev;
+    }
+    if (First == X) {
+      DCHECK_EQ(Prev, nullptr);
+      First = Next;
+    } else {
+      DCHECK_NE(Prev, nullptr);
+    }
+    if (Last == X) {
+      DCHECK_EQ(Next, nullptr);
+      Last = Prev;
+    } else {
+      DCHECK_NE(Next, nullptr);
+    }
+    Size--;
+  }
+};
+
+} // namespace scudo
+
+#endif // SCUDO_LIST_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/local_cache.h b/contrib/libs/clang14-rt/lib/scudo/standalone/local_cache.h
new file mode 100644
index 0000000000..f46645f9ba
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/local_cache.h
@@ -0,0 +1,198 @@
+//===-- local_cache.h -------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_LOCAL_CACHE_H_
+#define SCUDO_LOCAL_CACHE_H_
+
+#include "internal_defs.h"
+#include "report.h"
+#include "stats.h"
+
+namespace scudo {
+
+template <class SizeClassAllocator> struct SizeClassAllocatorLocalCache {
+  typedef typename SizeClassAllocator::SizeClassMap SizeClassMap;
+  typedef typename SizeClassAllocator::CompactPtrT CompactPtrT;
+
+  struct TransferBatch {
+    static const u32 MaxNumCached = SizeClassMap::MaxNumCachedHint;
+    void setFromArray(CompactPtrT *Array, u32 N) {
+      DCHECK_LE(N, MaxNumCached);
+      Count = N;
+      memcpy(Batch, Array, sizeof(Batch[0]) * Count);
+    }
+    void clear() { Count = 0; }
+    void add(CompactPtrT P) {
+      DCHECK_LT(Count, MaxNumCached);
+      Batch[Count++] = P;
+    }
+    void copyToArray(CompactPtrT *Array) const {
+      memcpy(Array, Batch, sizeof(Batch[0]) * Count);
+    }
+    u32 getCount() const { return Count; }
+    CompactPtrT get(u32 I) const {
+      DCHECK_LE(I, Count);
+      return Batch[I];
+    }
+    static u32 getMaxCached(uptr Size) {
+      return Min(MaxNumCached, SizeClassMap::getMaxCachedHint(Size));
+    }
+    TransferBatch *Next;
+
+  private:
+    u32 Count;
+    CompactPtrT Batch[MaxNumCached];
+  };
+
+  void init(GlobalStats *S, SizeClassAllocator *A) {
+    DCHECK(isEmpty());
+    Stats.init();
+    if (LIKELY(S))
+      S->link(&Stats);
+    Allocator = A;
+  }
+
+  void destroy(GlobalStats *S) {
+    drain();
+    if (LIKELY(S))
+      S->unlink(&Stats);
+  }
+
+  void *allocate(uptr ClassId) {
+    DCHECK_LT(ClassId, NumClasses);
+    PerClass *C = &PerClassArray[ClassId];
+    if (C->Count == 0) {
+      if (UNLIKELY(!refill(C, ClassId)))
+        return nullptr;
+      DCHECK_GT(C->Count, 0);
+    }
+    // We read ClassSize first before accessing Chunks because it's adjacent to
+    // Count, while Chunks might be further off (depending on Count). That keeps
+    // the memory accesses in close quarters.
+    const uptr ClassSize = C->ClassSize;
+    CompactPtrT CompactP = C->Chunks[--C->Count];
+    Stats.add(StatAllocated, ClassSize);
+    Stats.sub(StatFree, ClassSize);
+    return Allocator->decompactPtr(ClassId, CompactP);
+  }
+
+  void deallocate(uptr ClassId, void *P) {
+    CHECK_LT(ClassId, NumClasses);
+    PerClass *C = &PerClassArray[ClassId];
+    // We still have to initialize the cache in the event that the first heap
+    // operation in a thread is a deallocation.
+    initCacheMaybe(C);
+    if (C->Count == C->MaxCount)
+      drain(C, ClassId);
+    // See comment in allocate() about memory accesses.
+    const uptr ClassSize = C->ClassSize;
+    C->Chunks[C->Count++] =
+        Allocator->compactPtr(ClassId, reinterpret_cast<uptr>(P));
+    Stats.sub(StatAllocated, ClassSize);
+    Stats.add(StatFree, ClassSize);
+  }
+
+  bool isEmpty() const {
+    for (uptr I = 0; I < NumClasses; ++I)
+      if (PerClassArray[I].Count)
+        return false;
+    return true;
+  }
+
+  void drain() {
+    // Drain BatchClassId last as createBatch can refill it.
+    for (uptr I = 0; I < NumClasses; ++I) {
+      if (I == BatchClassId)
+        continue;
+      while (PerClassArray[I].Count > 0)
+        drain(&PerClassArray[I], I);
+    }
+    while (PerClassArray[BatchClassId].Count > 0)
+      drain(&PerClassArray[BatchClassId], BatchClassId);
+    DCHECK(isEmpty());
+  }
+
+  TransferBatch *createBatch(uptr ClassId, void *B) {
+    if (ClassId != BatchClassId)
+      B = allocate(BatchClassId);
+    return reinterpret_cast<TransferBatch *>(B);
+  }
+
+  LocalStats &getStats() { return Stats; }
+
+private:
+  static const uptr NumClasses = SizeClassMap::NumClasses;
+  static const uptr BatchClassId = SizeClassMap::BatchClassId;
+  struct PerClass {
+    u32 Count;
+    u32 MaxCount;
+    // Note: ClassSize is zero for the transfer batch.
+    uptr ClassSize;
+    CompactPtrT Chunks[2 * TransferBatch::MaxNumCached];
+  };
+  PerClass PerClassArray[NumClasses] = {};
+  LocalStats Stats;
+  SizeClassAllocator *Allocator = nullptr;
+
+  ALWAYS_INLINE void initCacheMaybe(PerClass *C) {
+    if (LIKELY(C->MaxCount))
+      return;
+    initCache();
+    DCHECK_NE(C->MaxCount, 0U);
+  }
+
+  NOINLINE void initCache() {
+    for (uptr I = 0; I < NumClasses; I++) {
+      PerClass *P = &PerClassArray[I];
+      const uptr Size = SizeClassAllocator::getSizeByClassId(I);
+      P->MaxCount = 2 * TransferBatch::getMaxCached(Size);
+      if (I != BatchClassId) {
+        P->ClassSize = Size;
+      } else {
+        // ClassSize in this struct is only used for malloc/free stats, which
+        // should only track user allocations, not internal movements.
+        P->ClassSize = 0;
+      }
+    }
+  }
+
+  void destroyBatch(uptr ClassId, void *B) {
+    if (ClassId != BatchClassId)
+      deallocate(BatchClassId, B);
+  }
+
+  NOINLINE bool refill(PerClass *C, uptr ClassId) {
+    initCacheMaybe(C);
+    TransferBatch *B = Allocator->popBatch(this, ClassId);
+    if (UNLIKELY(!B))
+      return false;
+    DCHECK_GT(B->getCount(), 0);
+    C->Count = B->getCount();
+    B->copyToArray(C->Chunks);
+    B->clear();
+    destroyBatch(ClassId, B);
+    return true;
+  }
+
+  NOINLINE void drain(PerClass *C, uptr ClassId) {
+    const u32 Count = Min(C->MaxCount / 2, C->Count);
+    TransferBatch *B =
+        createBatch(ClassId, Allocator->decompactPtr(ClassId, C->Chunks[0]));
+    if (UNLIKELY(!B))
+      reportOutOfMemory(SizeClassAllocator::getSizeByClassId(BatchClassId));
+    B->setFromArray(&C->Chunks[0], Count);
+    C->Count -= Count;
+    for (uptr I = 0; I < C->Count; I++)
+      C->Chunks[I] = C->Chunks[I + Count];
+    Allocator->pushBatch(ClassId, B);
+  }
+};
+
+} // namespace scudo
+
+#endif // SCUDO_LOCAL_CACHE_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/memtag.h b/contrib/libs/clang14-rt/lib/scudo/standalone/memtag.h
new file mode 100644
index 0000000000..df346bce1b
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/memtag.h
@@ -0,0 +1,331 @@
+//===-- memtag.h ------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_MEMTAG_H_
+#define SCUDO_MEMTAG_H_
+
+#include "internal_defs.h"
+
+#if SCUDO_LINUX
+#include <sys/auxv.h>
+#include <sys/prctl.h>
+#endif
+
+namespace scudo {
+
+#if (__clang_major__ >= 12 && defined(__aarch64__)) || defined(SCUDO_FUZZ)
+
+// We assume that Top-Byte Ignore is enabled if the architecture supports memory
+// tagging. Not all operating systems enable TBI, so we only claim architectural
+// support for memory tagging if the operating system enables TBI.
+// HWASan uses the top byte for its own purpose and Scudo should not touch it.
+#if SCUDO_LINUX && !defined(SCUDO_DISABLE_TBI) &&                              \
+    !__has_feature(hwaddress_sanitizer)
+inline constexpr bool archSupportsMemoryTagging() { return true; }
+#else
+inline constexpr bool archSupportsMemoryTagging() { return false; }
+#endif
+
+inline constexpr uptr archMemoryTagGranuleSize() { return 16; }
+
+inline uptr untagPointer(uptr Ptr) { return Ptr & ((1ULL << 56) - 1); }
+
+inline uint8_t extractTag(uptr Ptr) { return (Ptr >> 56) & 0xf; }
+
+#else
+
+inline constexpr bool archSupportsMemoryTagging() { return false; }
+
+inline uptr archMemoryTagGranuleSize() {
+  UNREACHABLE("memory tagging not supported");
+}
+
+inline uptr untagPointer(uptr Ptr) {
+  (void)Ptr;
+  UNREACHABLE("memory tagging not supported");
+}
+
+inline uint8_t extractTag(uptr Ptr) {
+  (void)Ptr;
+  UNREACHABLE("memory tagging not supported");
+}
+
+#endif
+
+#if __clang_major__ >= 12 && defined(__aarch64__)
+
+#if SCUDO_LINUX
+
+inline bool systemSupportsMemoryTagging() {
+#ifndef HWCAP2_MTE
+#define HWCAP2_MTE (1 << 18)
+#endif
+  return getauxval(AT_HWCAP2) & HWCAP2_MTE;
+}
+
+inline bool systemDetectsMemoryTagFaultsTestOnly() {
+#ifndef PR_SET_TAGGED_ADDR_CTRL
+#define PR_SET_TAGGED_ADDR_CTRL 54
+#endif
+#ifndef PR_GET_TAGGED_ADDR_CTRL
+#define PR_GET_TAGGED_ADDR_CTRL 56
+#endif
+#ifndef PR_TAGGED_ADDR_ENABLE
+#define PR_TAGGED_ADDR_ENABLE (1UL << 0)
+#endif
+#ifndef PR_MTE_TCF_SHIFT
+#define PR_MTE_TCF_SHIFT 1
+#endif
+#ifndef PR_MTE_TAG_SHIFT
+#define PR_MTE_TAG_SHIFT 3
+#endif
+#ifndef PR_MTE_TCF_NONE
+#define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT)
+#endif
+#ifndef PR_MTE_TCF_SYNC
+#define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT)
+#endif
+#ifndef PR_MTE_TCF_MASK
+#define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT)
+#endif
+  int res = prctl(PR_GET_TAGGED_ADDR_CTRL, 0, 0, 0, 0);
+  if (res == -1)
+    return false;
+  return (static_cast<unsigned long>(res) & PR_MTE_TCF_MASK) != PR_MTE_TCF_NONE;
+}
+
+inline void enableSystemMemoryTaggingTestOnly() {
+  prctl(PR_SET_TAGGED_ADDR_CTRL,
+        PR_TAGGED_ADDR_ENABLE | PR_MTE_TCF_SYNC | (0xfffe << PR_MTE_TAG_SHIFT),
+        0, 0, 0);
+}
+
+#else // !SCUDO_LINUX
+
+inline bool systemSupportsMemoryTagging() { return false; }
+
+inline bool systemDetectsMemoryTagFaultsTestOnly() {
+  UNREACHABLE("memory tagging not supported");
+}
+
+inline void enableSystemMemoryTaggingTestOnly() {
+  UNREACHABLE("memory tagging not supported");
+}
+
+#endif // SCUDO_LINUX
+
+class ScopedDisableMemoryTagChecks {
+  uptr PrevTCO;
+
+public:
+  ScopedDisableMemoryTagChecks() {
+    __asm__ __volatile__(
+        R"(
+        .arch_extension memtag
+        mrs %0, tco
+        msr tco, #1
+        )"
+        : "=r"(PrevTCO));
+  }
+
+  ~ScopedDisableMemoryTagChecks() {
+    __asm__ __volatile__(
+        R"(
+        .arch_extension memtag
+        msr tco, %0
+        )"
+        :
+        : "r"(PrevTCO));
+  }
+};
+
+inline uptr selectRandomTag(uptr Ptr, uptr ExcludeMask) {
+  ExcludeMask |= 1; // Always exclude Tag 0.
+  uptr TaggedPtr;
+  __asm__ __volatile__(
+      R"(
+      .arch_extension memtag
+      irg %[TaggedPtr], %[Ptr], %[ExcludeMask]
+      )"
+      : [TaggedPtr] "=r"(TaggedPtr)
+      : [Ptr] "r"(Ptr), [ExcludeMask] "r"(ExcludeMask));
+  return TaggedPtr;
+}
+
+inline uptr addFixedTag(uptr Ptr, uptr Tag) {
+  DCHECK_LT(Tag, 16);
+  DCHECK_EQ(untagPointer(Ptr), Ptr);
+  return Ptr | (Tag << 56);
+}
+
+inline uptr storeTags(uptr Begin, uptr End) {
+  DCHECK_EQ(0, Begin % 16);
+  uptr LineSize, Next, Tmp;
+  __asm__ __volatile__(
+      R"(
+    .arch_extension memtag
+
+    // Compute the cache line size in bytes (DCZID_EL0 stores it as the log2
+    // of the number of 4-byte words) and bail out to the slow path if DCZID_EL0
+    // indicates that the DC instructions are unavailable.
+    DCZID .req %[Tmp]
+    mrs DCZID, dczid_el0
+    tbnz DCZID, #4, 3f
+    and DCZID, DCZID, #15
+    mov %[LineSize], #4
+    lsl %[LineSize], %[LineSize], DCZID
+    .unreq DCZID
+
+    // Our main loop doesn't handle the case where we don't need to perform any
+    // DC GZVA operations. If the size of our tagged region is less than
+    // twice the cache line size, bail out to the slow path since it's not
+    // guaranteed that we'll be able to do a DC GZVA.
+    Size .req %[Tmp]
+    sub Size, %[End], %[Cur]
+    cmp Size, %[LineSize], lsl #1
+    b.lt 3f
+    .unreq Size
+
+    LineMask .req %[Tmp]
+    sub LineMask, %[LineSize], #1
+
+    // STZG until the start of the next cache line.
+    orr %[Next], %[Cur], LineMask
+  1:
+    stzg %[Cur], [%[Cur]], #16
+    cmp %[Cur], %[Next]
+    b.lt 1b
+
+    // DC GZVA cache lines until we have no more full cache lines.
+    bic %[Next], %[End], LineMask
+    .unreq LineMask
+  2:
+    dc gzva, %[Cur]
+    add %[Cur], %[Cur], %[LineSize]
+    cmp %[Cur], %[Next]
+    b.lt 2b
+
+    // STZG until the end of the tagged region. This loop is also used to handle
+    // slow path cases.
+  3:
+    cmp %[Cur], %[End]
+    b.ge 4f
+    stzg %[Cur], [%[Cur]], #16
+    b 3b
+
+  4:
+  )"
+      : [Cur] "+&r"(Begin), [LineSize] "=&r"(LineSize), [Next] "=&r"(Next),
+        [Tmp] "=&r"(Tmp)
+      : [End] "r"(End)
+      : "memory");
+  DCHECK_EQ(0, Begin % 16);
+  return Begin;
+}
+
+inline void storeTag(uptr Ptr) {
+  DCHECK_EQ(0, Ptr % 16);
+  __asm__ __volatile__(R"(
+    .arch_extension memtag
+    stg %0, [%0]
+  )"
+                       :
+                       : "r"(Ptr)
+                       : "memory");
+}
+
+inline uptr loadTag(uptr Ptr) {
+  DCHECK_EQ(0, Ptr % 16);
+  uptr TaggedPtr = Ptr;
+  __asm__ __volatile__(
+      R"(
+      .arch_extension memtag
+      ldg %0, [%0]
+      )"
+      : "+r"(TaggedPtr)
+      :
+      : "memory");
+  return TaggedPtr;
+}
+
+#else
+
+inline bool systemSupportsMemoryTagging() {
+  UNREACHABLE("memory tagging not supported");
+}
+
+inline bool systemDetectsMemoryTagFaultsTestOnly() {
+  UNREACHABLE("memory tagging not supported");
+}
+
+inline void enableSystemMemoryTaggingTestOnly() {
+  UNREACHABLE("memory tagging not supported");
+}
+
+struct ScopedDisableMemoryTagChecks {
+  ScopedDisableMemoryTagChecks() {}
+};
+
+inline uptr selectRandomTag(uptr Ptr, uptr ExcludeMask) {
+  (void)Ptr;
+  (void)ExcludeMask;
+  UNREACHABLE("memory tagging not supported");
+}
+
+inline uptr addFixedTag(uptr Ptr, uptr Tag) {
+  (void)Ptr;
+  (void)Tag;
+  UNREACHABLE("memory tagging not supported");
+}
+
+inline uptr storeTags(uptr Begin, uptr End) {
+  (void)Begin;
+  (void)End;
+  UNREACHABLE("memory tagging not supported");
+}
+
+inline void storeTag(uptr Ptr) {
+  (void)Ptr;
+  UNREACHABLE("memory tagging not supported");
+}
+
+inline uptr loadTag(uptr Ptr) {
+  (void)Ptr;
+  UNREACHABLE("memory tagging not supported");
+}
+
+#endif
+
+inline void setRandomTag(void *Ptr, uptr Size, uptr ExcludeMask,
+                         uptr *TaggedBegin, uptr *TaggedEnd) {
+  *TaggedBegin = selectRandomTag(reinterpret_cast<uptr>(Ptr), ExcludeMask);
+  *TaggedEnd = storeTags(*TaggedBegin, *TaggedBegin + Size);
+}
+
+inline void *untagPointer(void *Ptr) {
+  return reinterpret_cast<void *>(untagPointer(reinterpret_cast<uptr>(Ptr)));
+}
+
+inline void *loadTag(void *Ptr) {
+  return reinterpret_cast<void *>(loadTag(reinterpret_cast<uptr>(Ptr)));
+}
+
+inline void *addFixedTag(void *Ptr, uptr Tag) {
+  return reinterpret_cast<void *>(
+      addFixedTag(reinterpret_cast<uptr>(Ptr), Tag));
+}
+
+template <typename Config>
+inline constexpr bool allocatorSupportsMemoryTagging() {
+  return archSupportsMemoryTagging() && Config::MaySupportMemoryTagging &&
+         (1 << SCUDO_MIN_ALIGNMENT_LOG) >= archMemoryTagGranuleSize();
+}
+
+} // namespace scudo
+
+#endif
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/mutex.h b/contrib/libs/clang14-rt/lib/scudo/standalone/mutex.h
new file mode 100644
index 0000000000..b66733244c
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/mutex.h
@@ -0,0 +1,72 @@
+//===-- mutex.h -------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_MUTEX_H_
+#define SCUDO_MUTEX_H_
+
+#include "atomic_helpers.h"
+#include "common.h"
+
+#include <string.h>
+
+#if SCUDO_FUCHSIA
+#error #include <lib/sync/mutex.h> // for sync_mutex_t
+#endif
+
+namespace scudo {
+
+class HybridMutex {
+public:
+  bool tryLock();
+  NOINLINE void lock() {
+    if (LIKELY(tryLock()))
+      return;
+      // The compiler may try to fully unroll the loop, ending up in a
+      // NumberOfTries*NumberOfYields block of pauses mixed with tryLocks. This
+      // is large, ugly and unneeded, a compact loop is better for our purpose
+      // here. Use a pragma to tell the compiler not to unroll the loop.
+#ifdef __clang__
+#pragma nounroll
+#endif
+    for (u8 I = 0U; I < NumberOfTries; I++) {
+      yieldProcessor(NumberOfYields);
+      if (tryLock())
+        return;
+    }
+    lockSlow();
+  }
+  void unlock();
+
+private:
+  static constexpr u8 NumberOfTries = 8U;
+  static constexpr u8 NumberOfYields = 8U;
+
+#if SCUDO_LINUX
+  atomic_u32 M = {};
+#elif SCUDO_FUCHSIA
+  sync_mutex_t M = {};
+#endif
+
+  void lockSlow();
+};
+
+class ScopedLock {
+public:
+  explicit ScopedLock(HybridMutex &M) : Mutex(M) { Mutex.lock(); }
+  ~ScopedLock() { Mutex.unlock(); }
+
+private:
+  HybridMutex &Mutex;
+
+  ScopedLock(const ScopedLock &) = delete;
+  void operator=(const ScopedLock &) = delete;
+};
+
+} // namespace scudo
+
+#endif // SCUDO_MUTEX_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/options.h b/contrib/libs/clang14-rt/lib/scudo/standalone/options.h
new file mode 100644
index 0000000000..4e67865133
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/options.h
@@ -0,0 +1,74 @@
+//===-- options.h -----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_OPTIONS_H_
+#define SCUDO_OPTIONS_H_
+
+#include "atomic_helpers.h"
+#include "common.h"
+#include "memtag.h"
+
+namespace scudo {
+
+enum class OptionBit {
+  MayReturnNull,
+  FillContents0of2,
+  FillContents1of2,
+  DeallocTypeMismatch,
+  DeleteSizeMismatch,
+  TrackAllocationStacks,
+  UseOddEvenTags,
+  UseMemoryTagging,
+  AddLargeAllocationSlack,
+};
+
+struct Options {
+  u32 Val;
+
+  bool get(OptionBit Opt) const { return Val & (1U << static_cast<u32>(Opt)); }
+
+  FillContentsMode getFillContentsMode() const {
+    return static_cast<FillContentsMode>(
+        (Val >> static_cast<u32>(OptionBit::FillContents0of2)) & 3);
+  }
+};
+
+template <typename Config> bool useMemoryTagging(Options Options) {
+  return allocatorSupportsMemoryTagging<Config>() &&
+         Options.get(OptionBit::UseMemoryTagging);
+}
+
+struct AtomicOptions {
+  atomic_u32 Val = {};
+
+  Options load() const { return Options{atomic_load_relaxed(&Val)}; }
+
+  void clear(OptionBit Opt) {
+    atomic_fetch_and(&Val, ~(1U << static_cast<u32>(Opt)),
+                     memory_order_relaxed);
+  }
+
+  void set(OptionBit Opt) {
+    atomic_fetch_or(&Val, 1U << static_cast<u32>(Opt), memory_order_relaxed);
+  }
+
+  void setFillContentsMode(FillContentsMode FillContents) {
+    u32 Opts = atomic_load_relaxed(&Val), NewOpts;
+    do {
+      NewOpts = Opts;
+      NewOpts &= ~(3U << static_cast<u32>(OptionBit::FillContents0of2));
+      NewOpts |= static_cast<u32>(FillContents)
+                 << static_cast<u32>(OptionBit::FillContents0of2);
+    } while (!atomic_compare_exchange_strong(&Val, &Opts, NewOpts,
+                                             memory_order_relaxed));
+  }
+};
+
+} // namespace scudo
+
+#endif // SCUDO_OPTIONS_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/platform.h b/contrib/libs/clang14-rt/lib/scudo/standalone/platform.h
new file mode 100644
index 0000000000..36378d14d8
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/platform.h
@@ -0,0 +1,80 @@
+//===-- platform.h ----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_PLATFORM_H_
+#define SCUDO_PLATFORM_H_
+
+// Transitive includes of stdint.h specify some of the defines checked below.
+#include <stdint.h>
+
+#if defined(__linux__) && !defined(__TRUSTY__)
+#define SCUDO_LINUX 1
+#else
+#define SCUDO_LINUX 0
+#endif
+
+// See https://android.googlesource.com/platform/bionic/+/master/docs/defines.md
+#if defined(__BIONIC__)
+#define SCUDO_ANDROID 1
+#else
+#define SCUDO_ANDROID 0
+#endif
+
+#if defined(__Fuchsia__)
+#define SCUDO_FUCHSIA 1
+#else
+#define SCUDO_FUCHSIA 0
+#endif
+
+#if defined(__TRUSTY__)
+#define SCUDO_TRUSTY 1
+#else
+#define SCUDO_TRUSTY 0
+#endif
+
+#if __LP64__
+#define SCUDO_WORDSIZE 64U
+#else
+#define SCUDO_WORDSIZE 32U
+#endif
+
+#if SCUDO_WORDSIZE == 64U
+#define FIRST_32_SECOND_64(a, b) (b)
+#else
+#define FIRST_32_SECOND_64(a, b) (a)
+#endif
+
+#ifndef SCUDO_CAN_USE_PRIMARY64
+#define SCUDO_CAN_USE_PRIMARY64 (SCUDO_WORDSIZE == 64U)
+#endif
+
+#ifndef SCUDO_MIN_ALIGNMENT_LOG
+// We force malloc-type functions to be aligned to std::max_align_t, but there
+// is no reason why the minimum alignment for all other functions can't be 8
+// bytes. Except obviously for applications making incorrect assumptions.
+// TODO(kostyak): define SCUDO_MIN_ALIGNMENT_LOG 3
+#define SCUDO_MIN_ALIGNMENT_LOG FIRST_32_SECOND_64(3, 4)
+#endif
+
+#if defined(__aarch64__)
+#define SCUDO_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 48)
+#else
+#define SCUDO_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47)
+#endif
+
+// Older gcc have issues aligning to a constexpr, and require an integer.
+// See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56859 among others.
+#if defined(__powerpc__) || defined(__powerpc64__)
+#define SCUDO_CACHE_LINE_SIZE 128
+#else
+#define SCUDO_CACHE_LINE_SIZE 64
+#endif
+
+#define SCUDO_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 12)
+
+#endif // SCUDO_PLATFORM_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/primary32.h b/contrib/libs/clang14-rt/lib/scudo/standalone/primary32.h
new file mode 100644
index 0000000000..326c10a32a
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/primary32.h
@@ -0,0 +1,507 @@
+//===-- primary32.h ---------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_PRIMARY32_H_
+#define SCUDO_PRIMARY32_H_
+
+#include "bytemap.h"
+#include "common.h"
+#include "list.h"
+#include "local_cache.h"
+#include "options.h"
+#include "release.h"
+#include "report.h"
+#include "stats.h"
+#include "string_utils.h"
+
+namespace scudo {
+
+// SizeClassAllocator32 is an allocator for 32 or 64-bit address space.
+//
+// It maps Regions of 2^RegionSizeLog bytes aligned on a 2^RegionSizeLog bytes
+// boundary, and keeps a bytemap of the mappable address space to track the size
+// class they are associated with.
+//
+// Mapped regions are split into equally sized Blocks according to the size
+// class they belong to, and the associated pointers are shuffled to prevent any
+// predictable address pattern (the predictability increases with the block
+// size).
+//
+// Regions for size class 0 are special and used to hold TransferBatches, which
+// allow to transfer arrays of pointers from the global size class freelist to
+// the thread specific freelist for said class, and back.
+//
+// Memory used by this allocator is never unmapped but can be partially
+// reclaimed if the platform allows for it.
+
+template <typename Config> class SizeClassAllocator32 {
+public:
+  typedef typename Config::PrimaryCompactPtrT CompactPtrT;
+  typedef typename Config::SizeClassMap SizeClassMap;
+  // The bytemap can only track UINT8_MAX - 1 classes.
+  static_assert(SizeClassMap::LargestClassId <= (UINT8_MAX - 1), "");
+  // Regions should be large enough to hold the largest Block.
+  static_assert((1UL << Config::PrimaryRegionSizeLog) >= SizeClassMap::MaxSize,
+                "");
+  typedef SizeClassAllocator32<Config> ThisT;
+  typedef SizeClassAllocatorLocalCache<ThisT> CacheT;
+  typedef typename CacheT::TransferBatch TransferBatch;
+
+  static uptr getSizeByClassId(uptr ClassId) {
+    return (ClassId == SizeClassMap::BatchClassId)
+               ? sizeof(TransferBatch)
+               : SizeClassMap::getSizeByClassId(ClassId);
+  }
+
+  static bool canAllocate(uptr Size) { return Size <= SizeClassMap::MaxSize; }
+
+  void init(s32 ReleaseToOsInterval) {
+    if (SCUDO_FUCHSIA)
+      reportError("SizeClassAllocator32 is not supported on Fuchsia");
+
+    if (SCUDO_TRUSTY)
+      reportError("SizeClassAllocator32 is not supported on Trusty");
+
+    DCHECK(isAligned(reinterpret_cast<uptr>(this), alignof(ThisT)));
+    PossibleRegions.init();
+    u32 Seed;
+    const u64 Time = getMonotonicTime();
+    if (!getRandom(reinterpret_cast<void *>(&Seed), sizeof(Seed)))
+      Seed = static_cast<u32>(
+          Time ^ (reinterpret_cast<uptr>(SizeClassInfoArray) >> 6));
+    for (uptr I = 0; I < NumClasses; I++) {
+      SizeClassInfo *Sci = getSizeClassInfo(I);
+      Sci->RandState = getRandomU32(&Seed);
+      // Sci->MaxRegionIndex is already initialized to 0.
+      Sci->MinRegionIndex = NumRegions;
+      Sci->ReleaseInfo.LastReleaseAtNs = Time;
+    }
+    setOption(Option::ReleaseInterval, static_cast<sptr>(ReleaseToOsInterval));
+  }
+
+  void unmapTestOnly() {
+    while (NumberOfStashedRegions > 0)
+      unmap(reinterpret_cast<void *>(RegionsStash[--NumberOfStashedRegions]),
+            RegionSize);
+    uptr MinRegionIndex = NumRegions, MaxRegionIndex = 0;
+    for (uptr I = 0; I < NumClasses; I++) {
+      SizeClassInfo *Sci = getSizeClassInfo(I);
+      if (Sci->MinRegionIndex < MinRegionIndex)
+        MinRegionIndex = Sci->MinRegionIndex;
+      if (Sci->MaxRegionIndex > MaxRegionIndex)
+        MaxRegionIndex = Sci->MaxRegionIndex;
+      *Sci = {};
+    }
+    for (uptr I = MinRegionIndex; I < MaxRegionIndex; I++)
+      if (PossibleRegions[I])
+        unmap(reinterpret_cast<void *>(I * RegionSize), RegionSize);
+    PossibleRegions.unmapTestOnly();
+  }
+
+  CompactPtrT compactPtr(UNUSED uptr ClassId, uptr Ptr) const {
+    return static_cast<CompactPtrT>(Ptr);
+  }
+
+  void *decompactPtr(UNUSED uptr ClassId, CompactPtrT CompactPtr) const {
+    return reinterpret_cast<void *>(static_cast<uptr>(CompactPtr));
+  }
+
+  TransferBatch *popBatch(CacheT *C, uptr ClassId) {
+    DCHECK_LT(ClassId, NumClasses);
+    SizeClassInfo *Sci = getSizeClassInfo(ClassId);
+    ScopedLock L(Sci->Mutex);
+    TransferBatch *B = Sci->FreeList.front();
+    if (B) {
+      Sci->FreeList.pop_front();
+    } else {
+      B = populateFreeList(C, ClassId, Sci);
+      if (UNLIKELY(!B))
+        return nullptr;
+    }
+    DCHECK_GT(B->getCount(), 0);
+    Sci->Stats.PoppedBlocks += B->getCount();
+    return B;
+  }
+
+  void pushBatch(uptr ClassId, TransferBatch *B) {
+    DCHECK_LT(ClassId, NumClasses);
+    DCHECK_GT(B->getCount(), 0);
+    SizeClassInfo *Sci = getSizeClassInfo(ClassId);
+    ScopedLock L(Sci->Mutex);
+    Sci->FreeList.push_front(B);
+    Sci->Stats.PushedBlocks += B->getCount();
+    if (ClassId != SizeClassMap::BatchClassId)
+      releaseToOSMaybe(Sci, ClassId);
+  }
+
+  void disable() {
+    // The BatchClassId must be locked last since other classes can use it.
+    for (sptr I = static_cast<sptr>(NumClasses) - 1; I >= 0; I--) {
+      if (static_cast<uptr>(I) == SizeClassMap::BatchClassId)
+        continue;
+      getSizeClassInfo(static_cast<uptr>(I))->Mutex.lock();
+    }
+    getSizeClassInfo(SizeClassMap::BatchClassId)->Mutex.lock();
+    RegionsStashMutex.lock();
+    PossibleRegions.disable();
+  }
+
+  void enable() {
+    PossibleRegions.enable();
+    RegionsStashMutex.unlock();
+    getSizeClassInfo(SizeClassMap::BatchClassId)->Mutex.unlock();
+    for (uptr I = 0; I < NumClasses; I++) {
+      if (I == SizeClassMap::BatchClassId)
+        continue;
+      getSizeClassInfo(I)->Mutex.unlock();
+    }
+  }
+
+  template <typename F> void iterateOverBlocks(F Callback) {
+    uptr MinRegionIndex = NumRegions, MaxRegionIndex = 0;
+    for (uptr I = 0; I < NumClasses; I++) {
+      SizeClassInfo *Sci = getSizeClassInfo(I);
+      if (Sci->MinRegionIndex < MinRegionIndex)
+        MinRegionIndex = Sci->MinRegionIndex;
+      if (Sci->MaxRegionIndex > MaxRegionIndex)
+        MaxRegionIndex = Sci->MaxRegionIndex;
+    }
+    for (uptr I = MinRegionIndex; I <= MaxRegionIndex; I++)
+      if (PossibleRegions[I] &&
+          (PossibleRegions[I] - 1U) != SizeClassMap::BatchClassId) {
+        const uptr BlockSize = getSizeByClassId(PossibleRegions[I] - 1U);
+        const uptr From = I * RegionSize;
+        const uptr To = From + (RegionSize / BlockSize) * BlockSize;
+        for (uptr Block = From; Block < To; Block += BlockSize)
+          Callback(Block);
+      }
+  }
+
+  void getStats(ScopedString *Str) {
+    // TODO(kostyak): get the RSS per region.
+    uptr TotalMapped = 0;
+    uptr PoppedBlocks = 0;
+    uptr PushedBlocks = 0;
+    for (uptr I = 0; I < NumClasses; I++) {
+      SizeClassInfo *Sci = getSizeClassInfo(I);
+      TotalMapped += Sci->AllocatedUser;
+      PoppedBlocks += Sci->Stats.PoppedBlocks;
+      PushedBlocks += Sci->Stats.PushedBlocks;
+    }
+    Str->append("Stats: SizeClassAllocator32: %zuM mapped in %zu allocations; "
+                "remains %zu\n",
+                TotalMapped >> 20, PoppedBlocks, PoppedBlocks - PushedBlocks);
+    for (uptr I = 0; I < NumClasses; I++)
+      getStats(Str, I, 0);
+  }
+
+  bool setOption(Option O, sptr Value) {
+    if (O == Option::ReleaseInterval) {
+      const s32 Interval = Max(
+          Min(static_cast<s32>(Value), Config::PrimaryMaxReleaseToOsIntervalMs),
+          Config::PrimaryMinReleaseToOsIntervalMs);
+      atomic_store_relaxed(&ReleaseToOsIntervalMs, Interval);
+      return true;
+    }
+    // Not supported by the Primary, but not an error either.
+    return true;
+  }
+
+  uptr releaseToOS() {
+    uptr TotalReleasedBytes = 0;
+    for (uptr I = 0; I < NumClasses; I++) {
+      if (I == SizeClassMap::BatchClassId)
+        continue;
+      SizeClassInfo *Sci = getSizeClassInfo(I);
+      ScopedLock L(Sci->Mutex);
+      TotalReleasedBytes += releaseToOSMaybe(Sci, I, /*Force=*/true);
+    }
+    return TotalReleasedBytes;
+  }
+
+  const char *getRegionInfoArrayAddress() const { return nullptr; }
+  static uptr getRegionInfoArraySize() { return 0; }
+
+  static BlockInfo findNearestBlock(UNUSED const char *RegionInfoData,
+                                    UNUSED uptr Ptr) {
+    return {};
+  }
+
+  AtomicOptions Options;
+
+private:
+  static const uptr NumClasses = SizeClassMap::NumClasses;
+  static const uptr RegionSize = 1UL << Config::PrimaryRegionSizeLog;
+  static const uptr NumRegions =
+      SCUDO_MMAP_RANGE_SIZE >> Config::PrimaryRegionSizeLog;
+  static const u32 MaxNumBatches = SCUDO_ANDROID ? 4U : 8U;
+  typedef FlatByteMap<NumRegions> ByteMap;
+
+  struct SizeClassStats {
+    uptr PoppedBlocks;
+    uptr PushedBlocks;
+  };
+
+  struct ReleaseToOsInfo {
+    uptr PushedBlocksAtLastRelease;
+    uptr RangesReleased;
+    uptr LastReleasedBytes;
+    u64 LastReleaseAtNs;
+  };
+
+  struct alignas(SCUDO_CACHE_LINE_SIZE) SizeClassInfo {
+    HybridMutex Mutex;
+    SinglyLinkedList<TransferBatch> FreeList;
+    uptr CurrentRegion;
+    uptr CurrentRegionAllocated;
+    SizeClassStats Stats;
+    u32 RandState;
+    uptr AllocatedUser;
+    // Lowest & highest region index allocated for this size class, to avoid
+    // looping through the whole NumRegions.
+    uptr MinRegionIndex;
+    uptr MaxRegionIndex;
+    ReleaseToOsInfo ReleaseInfo;
+  };
+  static_assert(sizeof(SizeClassInfo) % SCUDO_CACHE_LINE_SIZE == 0, "");
+
+  uptr computeRegionId(uptr Mem) {
+    const uptr Id = Mem >> Config::PrimaryRegionSizeLog;
+    CHECK_LT(Id, NumRegions);
+    return Id;
+  }
+
+  uptr allocateRegionSlow() {
+    uptr MapSize = 2 * RegionSize;
+    const uptr MapBase = reinterpret_cast<uptr>(
+        map(nullptr, MapSize, "scudo:primary", MAP_ALLOWNOMEM));
+    if (!MapBase)
+      return 0;
+    const uptr MapEnd = MapBase + MapSize;
+    uptr Region = MapBase;
+    if (isAligned(Region, RegionSize)) {
+      ScopedLock L(RegionsStashMutex);
+      if (NumberOfStashedRegions < MaxStashedRegions)
+        RegionsStash[NumberOfStashedRegions++] = MapBase + RegionSize;
+      else
+        MapSize = RegionSize;
+    } else {
+      Region = roundUpTo(MapBase, RegionSize);
+      unmap(reinterpret_cast<void *>(MapBase), Region - MapBase);
+      MapSize = RegionSize;
+    }
+    const uptr End = Region + MapSize;
+    if (End != MapEnd)
+      unmap(reinterpret_cast<void *>(End), MapEnd - End);
+    return Region;
+  }
+
+  uptr allocateRegion(SizeClassInfo *Sci, uptr ClassId) {
+    DCHECK_LT(ClassId, NumClasses);
+    uptr Region = 0;
+    {
+      ScopedLock L(RegionsStashMutex);
+      if (NumberOfStashedRegions > 0)
+        Region = RegionsStash[--NumberOfStashedRegions];
+    }
+    if (!Region)
+      Region = allocateRegionSlow();
+    if (LIKELY(Region)) {
+      // Sci->Mutex is held by the caller, updating the Min/Max is safe.
+      const uptr RegionIndex = computeRegionId(Region);
+      if (RegionIndex < Sci->MinRegionIndex)
+        Sci->MinRegionIndex = RegionIndex;
+      if (RegionIndex > Sci->MaxRegionIndex)
+        Sci->MaxRegionIndex = RegionIndex;
+      PossibleRegions.set(RegionIndex, static_cast<u8>(ClassId + 1U));
+    }
+    return Region;
+  }
+
+  SizeClassInfo *getSizeClassInfo(uptr ClassId) {
+    DCHECK_LT(ClassId, NumClasses);
+    return &SizeClassInfoArray[ClassId];
+  }
+
+  NOINLINE TransferBatch *populateFreeList(CacheT *C, uptr ClassId,
+                                           SizeClassInfo *Sci) {
+    uptr Region;
+    uptr Offset;
+    // If the size-class currently has a region associated to it, use it. The
+    // newly created blocks will be located after the currently allocated memory
+    // for that region (up to RegionSize). Otherwise, create a new region, where
+    // the new blocks will be carved from the beginning.
+    if (Sci->CurrentRegion) {
+      Region = Sci->CurrentRegion;
+      DCHECK_GT(Sci->CurrentRegionAllocated, 0U);
+      Offset = Sci->CurrentRegionAllocated;
+    } else {
+      DCHECK_EQ(Sci->CurrentRegionAllocated, 0U);
+      Region = allocateRegion(Sci, ClassId);
+      if (UNLIKELY(!Region))
+        return nullptr;
+      C->getStats().add(StatMapped, RegionSize);
+      Sci->CurrentRegion = Region;
+      Offset = 0;
+    }
+
+    const uptr Size = getSizeByClassId(ClassId);
+    const u32 MaxCount = TransferBatch::getMaxCached(Size);
+    DCHECK_GT(MaxCount, 0U);
+    // The maximum number of blocks we should carve in the region is dictated
+    // by the maximum number of batches we want to fill, and the amount of
+    // memory left in the current region (we use the lowest of the two). This
+    // will not be 0 as we ensure that a region can at least hold one block (via
+    // static_assert and at the end of this function).
+    const u32 NumberOfBlocks =
+        Min(MaxNumBatches * MaxCount,
+            static_cast<u32>((RegionSize - Offset) / Size));
+    DCHECK_GT(NumberOfBlocks, 0U);
+
+    constexpr u32 ShuffleArraySize =
+        MaxNumBatches * TransferBatch::MaxNumCached;
+    // Fill the transfer batches and put them in the size-class freelist. We
+    // need to randomize the blocks for security purposes, so we first fill a
+    // local array that we then shuffle before populating the batches.
+    CompactPtrT ShuffleArray[ShuffleArraySize];
+    DCHECK_LE(NumberOfBlocks, ShuffleArraySize);
+
+    uptr P = Region + Offset;
+    for (u32 I = 0; I < NumberOfBlocks; I++, P += Size)
+      ShuffleArray[I] = reinterpret_cast<CompactPtrT>(P);
+    // No need to shuffle the batches size class.
+    if (ClassId != SizeClassMap::BatchClassId)
+      shuffle(ShuffleArray, NumberOfBlocks, &Sci->RandState);
+    for (u32 I = 0; I < NumberOfBlocks;) {
+      TransferBatch *B =
+          C->createBatch(ClassId, reinterpret_cast<void *>(ShuffleArray[I]));
+      if (UNLIKELY(!B))
+        return nullptr;
+      const u32 N = Min(MaxCount, NumberOfBlocks - I);
+      B->setFromArray(&ShuffleArray[I], N);
+      Sci->FreeList.push_back(B);
+      I += N;
+    }
+    TransferBatch *B = Sci->FreeList.front();
+    Sci->FreeList.pop_front();
+    DCHECK(B);
+    DCHECK_GT(B->getCount(), 0);
+
+    const uptr AllocatedUser = Size * NumberOfBlocks;
+    C->getStats().add(StatFree, AllocatedUser);
+    DCHECK_LE(Sci->CurrentRegionAllocated + AllocatedUser, RegionSize);
+    // If there is not enough room in the region currently associated to fit
+    // more blocks, we deassociate the region by resetting CurrentRegion and
+    // CurrentRegionAllocated. Otherwise, update the allocated amount.
+    if (RegionSize - (Sci->CurrentRegionAllocated + AllocatedUser) < Size) {
+      Sci->CurrentRegion = 0;
+      Sci->CurrentRegionAllocated = 0;
+    } else {
+      Sci->CurrentRegionAllocated += AllocatedUser;
+    }
+    Sci->AllocatedUser += AllocatedUser;
+
+    return B;
+  }
+
+  void getStats(ScopedString *Str, uptr ClassId, uptr Rss) {
+    SizeClassInfo *Sci = getSizeClassInfo(ClassId);
+    if (Sci->AllocatedUser == 0)
+      return;
+    const uptr InUse = Sci->Stats.PoppedBlocks - Sci->Stats.PushedBlocks;
+    const uptr AvailableChunks = Sci->AllocatedUser / getSizeByClassId(ClassId);
+    Str->append("  %02zu (%6zu): mapped: %6zuK popped: %7zu pushed: %7zu "
+                "inuse: %6zu avail: %6zu rss: %6zuK releases: %6zu\n",
+                ClassId, getSizeByClassId(ClassId), Sci->AllocatedUser >> 10,
+                Sci->Stats.PoppedBlocks, Sci->Stats.PushedBlocks, InUse,
+                AvailableChunks, Rss >> 10, Sci->ReleaseInfo.RangesReleased);
+  }
+
+  NOINLINE uptr releaseToOSMaybe(SizeClassInfo *Sci, uptr ClassId,
+                                 bool Force = false) {
+    const uptr BlockSize = getSizeByClassId(ClassId);
+    const uptr PageSize = getPageSizeCached();
+
+    DCHECK_GE(Sci->Stats.PoppedBlocks, Sci->Stats.PushedBlocks);
+    const uptr BytesInFreeList =
+        Sci->AllocatedUser -
+        (Sci->Stats.PoppedBlocks - Sci->Stats.PushedBlocks) * BlockSize;
+    if (BytesInFreeList < PageSize)
+      return 0; // No chance to release anything.
+    const uptr BytesPushed =
+        (Sci->Stats.PushedBlocks - Sci->ReleaseInfo.PushedBlocksAtLastRelease) *
+        BlockSize;
+    if (BytesPushed < PageSize)
+      return 0; // Nothing new to release.
+
+    // Releasing smaller blocks is expensive, so we want to make sure that a
+    // significant amount of bytes are free, and that there has been a good
+    // amount of batches pushed to the freelist before attempting to release.
+    if (BlockSize < PageSize / 16U) {
+      if (!Force && BytesPushed < Sci->AllocatedUser / 16U)
+        return 0;
+      // We want 8x% to 9x% free bytes (the larger the block, the lower the %).
+      if ((BytesInFreeList * 100U) / Sci->AllocatedUser <
+          (100U - 1U - BlockSize / 16U))
+        return 0;
+    }
+
+    if (!Force) {
+      const s32 IntervalMs = atomic_load_relaxed(&ReleaseToOsIntervalMs);
+      if (IntervalMs < 0)
+        return 0;
+      if (Sci->ReleaseInfo.LastReleaseAtNs +
+              static_cast<u64>(IntervalMs) * 1000000 >
+          getMonotonicTime()) {
+        return 0; // Memory was returned recently.
+      }
+    }
+
+    const uptr First = Sci->MinRegionIndex;
+    const uptr Last = Sci->MaxRegionIndex;
+    DCHECK_NE(Last, 0U);
+    DCHECK_LE(First, Last);
+    uptr TotalReleasedBytes = 0;
+    const uptr Base = First * RegionSize;
+    const uptr NumberOfRegions = Last - First + 1U;
+    ReleaseRecorder Recorder(Base);
+    auto SkipRegion = [this, First, ClassId](uptr RegionIndex) {
+      return (PossibleRegions[First + RegionIndex] - 1U) != ClassId;
+    };
+    auto DecompactPtr = [](CompactPtrT CompactPtr) {
+      return reinterpret_cast<uptr>(CompactPtr);
+    };
+    releaseFreeMemoryToOS(Sci->FreeList, RegionSize, NumberOfRegions, BlockSize,
+                          &Recorder, DecompactPtr, SkipRegion);
+    if (Recorder.getReleasedRangesCount() > 0) {
+      Sci->ReleaseInfo.PushedBlocksAtLastRelease = Sci->Stats.PushedBlocks;
+      Sci->ReleaseInfo.RangesReleased += Recorder.getReleasedRangesCount();
+      Sci->ReleaseInfo.LastReleasedBytes = Recorder.getReleasedBytes();
+      TotalReleasedBytes += Sci->ReleaseInfo.LastReleasedBytes;
+    }
+    Sci->ReleaseInfo.LastReleaseAtNs = getMonotonicTime();
+
+    return TotalReleasedBytes;
+  }
+
+  SizeClassInfo SizeClassInfoArray[NumClasses] = {};
+
+  // Track the regions in use, 0 is unused, otherwise store ClassId + 1.
+  ByteMap PossibleRegions = {};
+  atomic_s32 ReleaseToOsIntervalMs = {};
+  // Unless several threads request regions simultaneously from different size
+  // classes, the stash rarely contains more than 1 entry.
+  static constexpr uptr MaxStashedRegions = 4;
+  HybridMutex RegionsStashMutex;
+  uptr NumberOfStashedRegions = 0;
+  uptr RegionsStash[MaxStashedRegions] = {};
+};
+
+} // namespace scudo
+
+#endif // SCUDO_PRIMARY32_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/primary64.h b/contrib/libs/clang14-rt/lib/scudo/standalone/primary64.h
new file mode 100644
index 0000000000..6c1785512c
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/primary64.h
@@ -0,0 +1,489 @@
+//===-- primary64.h ---------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_PRIMARY64_H_
+#define SCUDO_PRIMARY64_H_
+
+#include "bytemap.h"
+#include "common.h"
+#include "list.h"
+#include "local_cache.h"
+#include "memtag.h"
+#include "options.h"
+#include "release.h"
+#include "stats.h"
+#include "string_utils.h"
+
+namespace scudo {
+
+// SizeClassAllocator64 is an allocator tuned for 64-bit address space.
+//
+// It starts by reserving NumClasses * 2^RegionSizeLog bytes, equally divided in
+// Regions, specific to each size class. Note that the base of that mapping is
+// random (based to the platform specific map() capabilities). If
+// PrimaryEnableRandomOffset is set, each Region actually starts at a random
+// offset from its base.
+//
+// Regions are mapped incrementally on demand to fulfill allocation requests,
+// those mappings being split into equally sized Blocks based on the size class
+// they belong to. The Blocks created are shuffled to prevent predictable
+// address patterns (the predictability increases with the size of the Blocks).
+//
+// The 1st Region (for size class 0) holds the TransferBatches. This is a
+// structure used to transfer arrays of available pointers from the class size
+// freelist to the thread specific freelist, and back.
+//
+// The memory used by this allocator is never unmapped, but can be partially
+// released if the platform allows for it.
+
+template <typename Config> class SizeClassAllocator64 {
+public:
+  typedef typename Config::PrimaryCompactPtrT CompactPtrT;
+  static const uptr CompactPtrScale = Config::PrimaryCompactPtrScale;
+  typedef typename Config::SizeClassMap SizeClassMap;
+  typedef SizeClassAllocator64<Config> ThisT;
+  typedef SizeClassAllocatorLocalCache<ThisT> CacheT;
+  typedef typename CacheT::TransferBatch TransferBatch;
+
+  static uptr getSizeByClassId(uptr ClassId) {
+    return (ClassId == SizeClassMap::BatchClassId)
+               ? roundUpTo(sizeof(TransferBatch), 1U << CompactPtrScale)
+               : SizeClassMap::getSizeByClassId(ClassId);
+  }
+
+  static bool canAllocate(uptr Size) { return Size <= SizeClassMap::MaxSize; }
+
+  void init(s32 ReleaseToOsInterval) {
+    DCHECK(isAligned(reinterpret_cast<uptr>(this), alignof(ThisT)));
+    DCHECK_EQ(PrimaryBase, 0U);
+    // Reserve the space required for the Primary.
+    PrimaryBase = reinterpret_cast<uptr>(
+        map(nullptr, PrimarySize, nullptr, MAP_NOACCESS, &Data));
+
+    u32 Seed;
+    const u64 Time = getMonotonicTime();
+    if (!getRandom(reinterpret_cast<void *>(&Seed), sizeof(Seed)))
+      Seed = static_cast<u32>(Time ^ (PrimaryBase >> 12));
+    const uptr PageSize = getPageSizeCached();
+    for (uptr I = 0; I < NumClasses; I++) {
+      RegionInfo *Region = getRegionInfo(I);
+      // The actual start of a region is offset by a random number of pages
+      // when PrimaryEnableRandomOffset is set.
+      Region->RegionBeg = getRegionBaseByClassId(I) +
+                          (Config::PrimaryEnableRandomOffset
+                               ? ((getRandomModN(&Seed, 16) + 1) * PageSize)
+                               : 0);
+      Region->RandState = getRandomU32(&Seed);
+      Region->ReleaseInfo.LastReleaseAtNs = Time;
+    }
+    setOption(Option::ReleaseInterval, static_cast<sptr>(ReleaseToOsInterval));
+  }
+
+  void unmapTestOnly() {
+    for (uptr I = 0; I < NumClasses; I++) {
+      RegionInfo *Region = getRegionInfo(I);
+      *Region = {};
+    }
+    unmap(reinterpret_cast<void *>(PrimaryBase), PrimarySize, UNMAP_ALL, &Data);
+    PrimaryBase = 0U;
+  }
+
+  TransferBatch *popBatch(CacheT *C, uptr ClassId) {
+    DCHECK_LT(ClassId, NumClasses);
+    RegionInfo *Region = getRegionInfo(ClassId);
+    ScopedLock L(Region->Mutex);
+    TransferBatch *B = Region->FreeList.front();
+    if (B) {
+      Region->FreeList.pop_front();
+    } else {
+      B = populateFreeList(C, ClassId, Region);
+      if (UNLIKELY(!B))
+        return nullptr;
+    }
+    DCHECK_GT(B->getCount(), 0);
+    Region->Stats.PoppedBlocks += B->getCount();
+    return B;
+  }
+
+  void pushBatch(uptr ClassId, TransferBatch *B) {
+    DCHECK_GT(B->getCount(), 0);
+    RegionInfo *Region = getRegionInfo(ClassId);
+    ScopedLock L(Region->Mutex);
+    Region->FreeList.push_front(B);
+    Region->Stats.PushedBlocks += B->getCount();
+    if (ClassId != SizeClassMap::BatchClassId)
+      releaseToOSMaybe(Region, ClassId);
+  }
+
+  void disable() {
+    // The BatchClassId must be locked last since other classes can use it.
+    for (sptr I = static_cast<sptr>(NumClasses) - 1; I >= 0; I--) {
+      if (static_cast<uptr>(I) == SizeClassMap::BatchClassId)
+        continue;
+      getRegionInfo(static_cast<uptr>(I))->Mutex.lock();
+    }
+    getRegionInfo(SizeClassMap::BatchClassId)->Mutex.lock();
+  }
+
+  void enable() {
+    getRegionInfo(SizeClassMap::BatchClassId)->Mutex.unlock();
+    for (uptr I = 0; I < NumClasses; I++) {
+      if (I == SizeClassMap::BatchClassId)
+        continue;
+      getRegionInfo(I)->Mutex.unlock();
+    }
+  }
+
+  template <typename F> void iterateOverBlocks(F Callback) {
+    for (uptr I = 0; I < NumClasses; I++) {
+      if (I == SizeClassMap::BatchClassId)
+        continue;
+      const RegionInfo *Region = getRegionInfo(I);
+      const uptr BlockSize = getSizeByClassId(I);
+      const uptr From = Region->RegionBeg;
+      const uptr To = From + Region->AllocatedUser;
+      for (uptr Block = From; Block < To; Block += BlockSize)
+        Callback(Block);
+    }
+  }
+
+  void getStats(ScopedString *Str) {
+    // TODO(kostyak): get the RSS per region.
+    uptr TotalMapped = 0;
+    uptr PoppedBlocks = 0;
+    uptr PushedBlocks = 0;
+    for (uptr I = 0; I < NumClasses; I++) {
+      RegionInfo *Region = getRegionInfo(I);
+      if (Region->MappedUser)
+        TotalMapped += Region->MappedUser;
+      PoppedBlocks += Region->Stats.PoppedBlocks;
+      PushedBlocks += Region->Stats.PushedBlocks;
+    }
+    Str->append("Stats: SizeClassAllocator64: %zuM mapped (%uM rss) in %zu "
+                "allocations; remains %zu\n",
+                TotalMapped >> 20, 0U, PoppedBlocks,
+                PoppedBlocks - PushedBlocks);
+
+    for (uptr I = 0; I < NumClasses; I++)
+      getStats(Str, I, 0);
+  }
+
+  bool setOption(Option O, sptr Value) {
+    if (O == Option::ReleaseInterval) {
+      const s32 Interval = Max(
+          Min(static_cast<s32>(Value), Config::PrimaryMaxReleaseToOsIntervalMs),
+          Config::PrimaryMinReleaseToOsIntervalMs);
+      atomic_store_relaxed(&ReleaseToOsIntervalMs, Interval);
+      return true;
+    }
+    // Not supported by the Primary, but not an error either.
+    return true;
+  }
+
+  uptr releaseToOS() {
+    uptr TotalReleasedBytes = 0;
+    for (uptr I = 0; I < NumClasses; I++) {
+      if (I == SizeClassMap::BatchClassId)
+        continue;
+      RegionInfo *Region = getRegionInfo(I);
+      ScopedLock L(Region->Mutex);
+      TotalReleasedBytes += releaseToOSMaybe(Region, I, /*Force=*/true);
+    }
+    return TotalReleasedBytes;
+  }
+
+  const char *getRegionInfoArrayAddress() const {
+    return reinterpret_cast<const char *>(RegionInfoArray);
+  }
+
+  static uptr getRegionInfoArraySize() { return sizeof(RegionInfoArray); }
+
+  uptr getCompactPtrBaseByClassId(uptr ClassId) {
+    // If we are not compacting pointers, base everything off of 0.
+    if (sizeof(CompactPtrT) == sizeof(uptr) && CompactPtrScale == 0)
+      return 0;
+    return getRegionInfo(ClassId)->RegionBeg;
+  }
+
+  CompactPtrT compactPtr(uptr ClassId, uptr Ptr) {
+    DCHECK_LE(ClassId, SizeClassMap::LargestClassId);
+    return compactPtrInternal(getCompactPtrBaseByClassId(ClassId), Ptr);
+  }
+
+  void *decompactPtr(uptr ClassId, CompactPtrT CompactPtr) {
+    DCHECK_LE(ClassId, SizeClassMap::LargestClassId);
+    return reinterpret_cast<void *>(
+        decompactPtrInternal(getCompactPtrBaseByClassId(ClassId), CompactPtr));
+  }
+
+  static BlockInfo findNearestBlock(const char *RegionInfoData, uptr Ptr) {
+    const RegionInfo *RegionInfoArray =
+        reinterpret_cast<const RegionInfo *>(RegionInfoData);
+    uptr ClassId;
+    uptr MinDistance = -1UL;
+    for (uptr I = 0; I != NumClasses; ++I) {
+      if (I == SizeClassMap::BatchClassId)
+        continue;
+      uptr Begin = RegionInfoArray[I].RegionBeg;
+      uptr End = Begin + RegionInfoArray[I].AllocatedUser;
+      if (Begin > End || End - Begin < SizeClassMap::getSizeByClassId(I))
+        continue;
+      uptr RegionDistance;
+      if (Begin <= Ptr) {
+        if (Ptr < End)
+          RegionDistance = 0;
+        else
+          RegionDistance = Ptr - End;
+      } else {
+        RegionDistance = Begin - Ptr;
+      }
+
+      if (RegionDistance < MinDistance) {
+        MinDistance = RegionDistance;
+        ClassId = I;
+      }
+    }
+
+    BlockInfo B = {};
+    if (MinDistance <= 8192) {
+      B.RegionBegin = RegionInfoArray[ClassId].RegionBeg;
+      B.RegionEnd = B.RegionBegin + RegionInfoArray[ClassId].AllocatedUser;
+      B.BlockSize = SizeClassMap::getSizeByClassId(ClassId);
+      B.BlockBegin =
+          B.RegionBegin + uptr(sptr(Ptr - B.RegionBegin) / sptr(B.BlockSize) *
+                               sptr(B.BlockSize));
+      while (B.BlockBegin < B.RegionBegin)
+        B.BlockBegin += B.BlockSize;
+      while (B.RegionEnd < B.BlockBegin + B.BlockSize)
+        B.BlockBegin -= B.BlockSize;
+    }
+    return B;
+  }
+
+  AtomicOptions Options;
+
+private:
+  static const uptr RegionSize = 1UL << Config::PrimaryRegionSizeLog;
+  static const uptr NumClasses = SizeClassMap::NumClasses;
+  static const uptr PrimarySize = RegionSize * NumClasses;
+
+  static const uptr MapSizeIncrement = Config::PrimaryMapSizeIncrement;
+  // Fill at most this number of batches from the newly map'd memory.
+  static const u32 MaxNumBatches = SCUDO_ANDROID ? 4U : 8U;
+
+  struct RegionStats {
+    uptr PoppedBlocks;
+    uptr PushedBlocks;
+  };
+
+  struct ReleaseToOsInfo {
+    uptr PushedBlocksAtLastRelease;
+    uptr RangesReleased;
+    uptr LastReleasedBytes;
+    u64 LastReleaseAtNs;
+  };
+
+  struct UnpaddedRegionInfo {
+    HybridMutex Mutex;
+    SinglyLinkedList<TransferBatch> FreeList;
+    uptr RegionBeg = 0;
+    RegionStats Stats = {};
+    u32 RandState = 0;
+    uptr MappedUser = 0;    // Bytes mapped for user memory.
+    uptr AllocatedUser = 0; // Bytes allocated for user memory.
+    MapPlatformData Data = {};
+    ReleaseToOsInfo ReleaseInfo = {};
+    bool Exhausted = false;
+  };
+  struct RegionInfo : UnpaddedRegionInfo {
+    char Padding[SCUDO_CACHE_LINE_SIZE -
+                 (sizeof(UnpaddedRegionInfo) % SCUDO_CACHE_LINE_SIZE)] = {};
+  };
+  static_assert(sizeof(RegionInfo) % SCUDO_CACHE_LINE_SIZE == 0, "");
+
+  uptr PrimaryBase = 0;
+  MapPlatformData Data = {};
+  atomic_s32 ReleaseToOsIntervalMs = {};
+  alignas(SCUDO_CACHE_LINE_SIZE) RegionInfo RegionInfoArray[NumClasses];
+
+  RegionInfo *getRegionInfo(uptr ClassId) {
+    DCHECK_LT(ClassId, NumClasses);
+    return &RegionInfoArray[ClassId];
+  }
+
+  uptr getRegionBaseByClassId(uptr ClassId) const {
+    return PrimaryBase + (ClassId << Config::PrimaryRegionSizeLog);
+  }
+
+  static CompactPtrT compactPtrInternal(uptr Base, uptr Ptr) {
+    return static_cast<CompactPtrT>((Ptr - Base) >> CompactPtrScale);
+  }
+
+  static uptr decompactPtrInternal(uptr Base, CompactPtrT CompactPtr) {
+    return Base + (static_cast<uptr>(CompactPtr) << CompactPtrScale);
+  }
+
+  NOINLINE TransferBatch *populateFreeList(CacheT *C, uptr ClassId,
+                                           RegionInfo *Region) {
+    const uptr Size = getSizeByClassId(ClassId);
+    const u32 MaxCount = TransferBatch::getMaxCached(Size);
+
+    const uptr RegionBeg = Region->RegionBeg;
+    const uptr MappedUser = Region->MappedUser;
+    const uptr TotalUserBytes = Region->AllocatedUser + MaxCount * Size;
+    // Map more space for blocks, if necessary.
+    if (TotalUserBytes > MappedUser) {
+      // Do the mmap for the user memory.
+      const uptr MapSize =
+          roundUpTo(TotalUserBytes - MappedUser, MapSizeIncrement);
+      const uptr RegionBase = RegionBeg - getRegionBaseByClassId(ClassId);
+      if (UNLIKELY(RegionBase + MappedUser + MapSize > RegionSize)) {
+        if (!Region->Exhausted) {
+          Region->Exhausted = true;
+          ScopedString Str;
+          getStats(&Str);
+          Str.append(
+              "Scudo OOM: The process has exhausted %zuM for size class %zu.\n",
+              RegionSize >> 20, Size);
+          Str.output();
+        }
+        return nullptr;
+      }
+      if (MappedUser == 0)
+        Region->Data = Data;
+      if (UNLIKELY(!map(
+              reinterpret_cast<void *>(RegionBeg + MappedUser), MapSize,
+              "scudo:primary",
+              MAP_ALLOWNOMEM | MAP_RESIZABLE |
+                  (useMemoryTagging<Config>(Options.load()) ? MAP_MEMTAG : 0),
+              &Region->Data)))
+        return nullptr;
+      Region->MappedUser += MapSize;
+      C->getStats().add(StatMapped, MapSize);
+    }
+
+    const u32 NumberOfBlocks = Min(
+        MaxNumBatches * MaxCount,
+        static_cast<u32>((Region->MappedUser - Region->AllocatedUser) / Size));
+    DCHECK_GT(NumberOfBlocks, 0);
+
+    constexpr u32 ShuffleArraySize =
+        MaxNumBatches * TransferBatch::MaxNumCached;
+    CompactPtrT ShuffleArray[ShuffleArraySize];
+    DCHECK_LE(NumberOfBlocks, ShuffleArraySize);
+
+    const uptr CompactPtrBase = getCompactPtrBaseByClassId(ClassId);
+    uptr P = RegionBeg + Region->AllocatedUser;
+    for (u32 I = 0; I < NumberOfBlocks; I++, P += Size)
+      ShuffleArray[I] = compactPtrInternal(CompactPtrBase, P);
+    // No need to shuffle the batches size class.
+    if (ClassId != SizeClassMap::BatchClassId)
+      shuffle(ShuffleArray, NumberOfBlocks, &Region->RandState);
+    for (u32 I = 0; I < NumberOfBlocks;) {
+      TransferBatch *B =
+          C->createBatch(ClassId, reinterpret_cast<void *>(decompactPtrInternal(
+                                      CompactPtrBase, ShuffleArray[I])));
+      if (UNLIKELY(!B))
+        return nullptr;
+      const u32 N = Min(MaxCount, NumberOfBlocks - I);
+      B->setFromArray(&ShuffleArray[I], N);
+      Region->FreeList.push_back(B);
+      I += N;
+    }
+    TransferBatch *B = Region->FreeList.front();
+    Region->FreeList.pop_front();
+    DCHECK(B);
+    DCHECK_GT(B->getCount(), 0);
+
+    const uptr AllocatedUser = Size * NumberOfBlocks;
+    C->getStats().add(StatFree, AllocatedUser);
+    Region->AllocatedUser += AllocatedUser;
+
+    return B;
+  }
+
+  void getStats(ScopedString *Str, uptr ClassId, uptr Rss) {
+    RegionInfo *Region = getRegionInfo(ClassId);
+    if (Region->MappedUser == 0)
+      return;
+    const uptr InUse = Region->Stats.PoppedBlocks - Region->Stats.PushedBlocks;
+    const uptr TotalChunks = Region->AllocatedUser / getSizeByClassId(ClassId);
+    Str->append("%s %02zu (%6zu): mapped: %6zuK popped: %7zu pushed: %7zu "
+                "inuse: %6zu total: %6zu rss: %6zuK releases: %6zu last "
+                "released: %6zuK region: 0x%zx (0x%zx)\n",
+                Region->Exhausted ? "F" : " ", ClassId,
+                getSizeByClassId(ClassId), Region->MappedUser >> 10,
+                Region->Stats.PoppedBlocks, Region->Stats.PushedBlocks, InUse,
+                TotalChunks, Rss >> 10, Region->ReleaseInfo.RangesReleased,
+                Region->ReleaseInfo.LastReleasedBytes >> 10, Region->RegionBeg,
+                getRegionBaseByClassId(ClassId));
+  }
+
+  NOINLINE uptr releaseToOSMaybe(RegionInfo *Region, uptr ClassId,
+                                 bool Force = false) {
+    const uptr BlockSize = getSizeByClassId(ClassId);
+    const uptr PageSize = getPageSizeCached();
+
+    DCHECK_GE(Region->Stats.PoppedBlocks, Region->Stats.PushedBlocks);
+    const uptr BytesInFreeList =
+        Region->AllocatedUser -
+        (Region->Stats.PoppedBlocks - Region->Stats.PushedBlocks) * BlockSize;
+    if (BytesInFreeList < PageSize)
+      return 0; // No chance to release anything.
+    const uptr BytesPushed = (Region->Stats.PushedBlocks -
+                              Region->ReleaseInfo.PushedBlocksAtLastRelease) *
+                             BlockSize;
+    if (BytesPushed < PageSize)
+      return 0; // Nothing new to release.
+
+    // Releasing smaller blocks is expensive, so we want to make sure that a
+    // significant amount of bytes are free, and that there has been a good
+    // amount of batches pushed to the freelist before attempting to release.
+    if (BlockSize < PageSize / 16U) {
+      if (!Force && BytesPushed < Region->AllocatedUser / 16U)
+        return 0;
+      // We want 8x% to 9x% free bytes (the larger the block, the lower the %).
+      if ((BytesInFreeList * 100U) / Region->AllocatedUser <
+          (100U - 1U - BlockSize / 16U))
+        return 0;
+    }
+
+    if (!Force) {
+      const s32 IntervalMs = atomic_load_relaxed(&ReleaseToOsIntervalMs);
+      if (IntervalMs < 0)
+        return 0;
+      if (Region->ReleaseInfo.LastReleaseAtNs +
+              static_cast<u64>(IntervalMs) * 1000000 >
+          getMonotonicTime()) {
+        return 0; // Memory was returned recently.
+      }
+    }
+
+    ReleaseRecorder Recorder(Region->RegionBeg, &Region->Data);
+    const uptr CompactPtrBase = getCompactPtrBaseByClassId(ClassId);
+    auto DecompactPtr = [CompactPtrBase](CompactPtrT CompactPtr) {
+      return decompactPtrInternal(CompactPtrBase, CompactPtr);
+    };
+    auto SkipRegion = [](UNUSED uptr RegionIndex) { return false; };
+    releaseFreeMemoryToOS(Region->FreeList, Region->AllocatedUser, 1U,
+                          BlockSize, &Recorder, DecompactPtr, SkipRegion);
+
+    if (Recorder.getReleasedRangesCount() > 0) {
+      Region->ReleaseInfo.PushedBlocksAtLastRelease =
+          Region->Stats.PushedBlocks;
+      Region->ReleaseInfo.RangesReleased += Recorder.getReleasedRangesCount();
+      Region->ReleaseInfo.LastReleasedBytes = Recorder.getReleasedBytes();
+    }
+    Region->ReleaseInfo.LastReleaseAtNs = getMonotonicTime();
+    return Recorder.getReleasedBytes();
+  }
+};
+
+} // namespace scudo
+
+#endif // SCUDO_PRIMARY64_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/quarantine.h b/contrib/libs/clang14-rt/lib/scudo/standalone/quarantine.h
new file mode 100644
index 0000000000..2d231c3a28
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/quarantine.h
@@ -0,0 +1,297 @@
+//===-- quarantine.h --------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_QUARANTINE_H_
+#define SCUDO_QUARANTINE_H_
+
+#include "list.h"
+#include "mutex.h"
+#include "string_utils.h"
+
+namespace scudo {
+
+struct QuarantineBatch {
+  // With the following count, a batch (and the header that protects it) occupy
+  // 4096 bytes on 32-bit platforms, and 8192 bytes on 64-bit.
+  static const u32 MaxCount = 1019;
+  QuarantineBatch *Next;
+  uptr Size;
+  u32 Count;
+  void *Batch[MaxCount];
+
+  void init(void *Ptr, uptr Size) {
+    Count = 1;
+    Batch[0] = Ptr;
+    this->Size = Size + sizeof(QuarantineBatch); // Account for the Batch Size.
+  }
+
+  // The total size of quarantined nodes recorded in this batch.
+  uptr getQuarantinedSize() const { return Size - sizeof(QuarantineBatch); }
+
+  void push_back(void *Ptr, uptr Size) {
+    DCHECK_LT(Count, MaxCount);
+    Batch[Count++] = Ptr;
+    this->Size += Size;
+  }
+
+  bool canMerge(const QuarantineBatch *const From) const {
+    return Count + From->Count <= MaxCount;
+  }
+
+  void merge(QuarantineBatch *const From) {
+    DCHECK_LE(Count + From->Count, MaxCount);
+    DCHECK_GE(Size, sizeof(QuarantineBatch));
+
+    for (uptr I = 0; I < From->Count; ++I)
+      Batch[Count + I] = From->Batch[I];
+    Count += From->Count;
+    Size += From->getQuarantinedSize();
+
+    From->Count = 0;
+    From->Size = sizeof(QuarantineBatch);
+  }
+
+  void shuffle(u32 State) { ::scudo::shuffle(Batch, Count, &State); }
+};
+
+static_assert(sizeof(QuarantineBatch) <= (1U << 13), ""); // 8Kb.
+
+// Per-thread cache of memory blocks.
+template <typename Callback> class QuarantineCache {
+public:
+  void init() { DCHECK_EQ(atomic_load_relaxed(&Size), 0U); }
+
+  // Total memory used, including internal accounting.
+  uptr getSize() const { return atomic_load_relaxed(&Size); }
+  // Memory used for internal accounting.
+  uptr getOverheadSize() const { return List.size() * sizeof(QuarantineBatch); }
+
+  void enqueue(Callback Cb, void *Ptr, uptr Size) {
+    if (List.empty() || List.back()->Count == QuarantineBatch::MaxCount) {
+      QuarantineBatch *B =
+          reinterpret_cast<QuarantineBatch *>(Cb.allocate(sizeof(*B)));
+      DCHECK(B);
+      B->init(Ptr, Size);
+      enqueueBatch(B);
+    } else {
+      List.back()->push_back(Ptr, Size);
+      addToSize(Size);
+    }
+  }
+
+  void transfer(QuarantineCache *From) {
+    List.append_back(&From->List);
+    addToSize(From->getSize());
+    atomic_store_relaxed(&From->Size, 0);
+  }
+
+  void enqueueBatch(QuarantineBatch *B) {
+    List.push_back(B);
+    addToSize(B->Size);
+  }
+
+  QuarantineBatch *dequeueBatch() {
+    if (List.empty())
+      return nullptr;
+    QuarantineBatch *B = List.front();
+    List.pop_front();
+    subFromSize(B->Size);
+    return B;
+  }
+
+  void mergeBatches(QuarantineCache *ToDeallocate) {
+    uptr ExtractedSize = 0;
+    QuarantineBatch *Current = List.front();
+    while (Current && Current->Next) {
+      if (Current->canMerge(Current->Next)) {
+        QuarantineBatch *Extracted = Current->Next;
+        // Move all the chunks into the current batch.
+        Current->merge(Extracted);
+        DCHECK_EQ(Extracted->Count, 0);
+        DCHECK_EQ(Extracted->Size, sizeof(QuarantineBatch));
+        // Remove the next batch From the list and account for its Size.
+        List.extract(Current, Extracted);
+        ExtractedSize += Extracted->Size;
+        // Add it to deallocation list.
+        ToDeallocate->enqueueBatch(Extracted);
+      } else {
+        Current = Current->Next;
+      }
+    }
+    subFromSize(ExtractedSize);
+  }
+
+  void getStats(ScopedString *Str) const {
+    uptr BatchCount = 0;
+    uptr TotalOverheadBytes = 0;
+    uptr TotalBytes = 0;
+    uptr TotalQuarantineChunks = 0;
+    for (const QuarantineBatch &Batch : List) {
+      BatchCount++;
+      TotalBytes += Batch.Size;
+      TotalOverheadBytes += Batch.Size - Batch.getQuarantinedSize();
+      TotalQuarantineChunks += Batch.Count;
+    }
+    const uptr QuarantineChunksCapacity =
+        BatchCount * QuarantineBatch::MaxCount;
+    const uptr ChunksUsagePercent =
+        (QuarantineChunksCapacity == 0)
+            ? 0
+            : TotalQuarantineChunks * 100 / QuarantineChunksCapacity;
+    const uptr TotalQuarantinedBytes = TotalBytes - TotalOverheadBytes;
+    const uptr MemoryOverheadPercent =
+        (TotalQuarantinedBytes == 0)
+            ? 0
+            : TotalOverheadBytes * 100 / TotalQuarantinedBytes;
+    Str->append(
+        "Stats: Quarantine: batches: %zu; bytes: %zu (user: %zu); chunks: %zu "
+        "(capacity: %zu); %zu%% chunks used; %zu%% memory overhead\n",
+        BatchCount, TotalBytes, TotalQuarantinedBytes, TotalQuarantineChunks,
+        QuarantineChunksCapacity, ChunksUsagePercent, MemoryOverheadPercent);
+  }
+
+private:
+  SinglyLinkedList<QuarantineBatch> List;
+  atomic_uptr Size = {};
+
+  void addToSize(uptr add) { atomic_store_relaxed(&Size, getSize() + add); }
+  void subFromSize(uptr sub) { atomic_store_relaxed(&Size, getSize() - sub); }
+};
+
+// The callback interface is:
+// void Callback::recycle(Node *Ptr);
+// void *Callback::allocate(uptr Size);
+// void Callback::deallocate(void *Ptr);
+template <typename Callback, typename Node> class GlobalQuarantine {
+public:
+  typedef QuarantineCache<Callback> CacheT;
+  using ThisT = GlobalQuarantine<Callback, Node>;
+
+  void init(uptr Size, uptr CacheSize) {
+    DCHECK(isAligned(reinterpret_cast<uptr>(this), alignof(ThisT)));
+    DCHECK_EQ(atomic_load_relaxed(&MaxSize), 0U);
+    DCHECK_EQ(atomic_load_relaxed(&MinSize), 0U);
+    DCHECK_EQ(atomic_load_relaxed(&MaxCacheSize), 0U);
+    // Thread local quarantine size can be zero only when global quarantine size
+    // is zero (it allows us to perform just one atomic read per put() call).
+    CHECK((Size == 0 && CacheSize == 0) || CacheSize != 0);
+
+    atomic_store_relaxed(&MaxSize, Size);
+    atomic_store_relaxed(&MinSize, Size / 10 * 9); // 90% of max size.
+    atomic_store_relaxed(&MaxCacheSize, CacheSize);
+
+    Cache.init();
+  }
+
+  uptr getMaxSize() const { return atomic_load_relaxed(&MaxSize); }
+  uptr getCacheSize() const { return atomic_load_relaxed(&MaxCacheSize); }
+
+  void put(CacheT *C, Callback Cb, Node *Ptr, uptr Size) {
+    C->enqueue(Cb, Ptr, Size);
+    if (C->getSize() > getCacheSize())
+      drain(C, Cb);
+  }
+
+  void NOINLINE drain(CacheT *C, Callback Cb) {
+    {
+      ScopedLock L(CacheMutex);
+      Cache.transfer(C);
+    }
+    if (Cache.getSize() > getMaxSize() && RecycleMutex.tryLock())
+      recycle(atomic_load_relaxed(&MinSize), Cb);
+  }
+
+  void NOINLINE drainAndRecycle(CacheT *C, Callback Cb) {
+    {
+      ScopedLock L(CacheMutex);
+      Cache.transfer(C);
+    }
+    RecycleMutex.lock();
+    recycle(0, Cb);
+  }
+
+  void getStats(ScopedString *Str) const {
+    // It assumes that the world is stopped, just as the allocator's printStats.
+    Cache.getStats(Str);
+    Str->append("Quarantine limits: global: %zuK; thread local: %zuK\n",
+                getMaxSize() >> 10, getCacheSize() >> 10);
+  }
+
+  void disable() {
+    // RecycleMutex must be locked 1st since we grab CacheMutex within recycle.
+    RecycleMutex.lock();
+    CacheMutex.lock();
+  }
+
+  void enable() {
+    CacheMutex.unlock();
+    RecycleMutex.unlock();
+  }
+
+private:
+  // Read-only data.
+  alignas(SCUDO_CACHE_LINE_SIZE) HybridMutex CacheMutex;
+  CacheT Cache;
+  alignas(SCUDO_CACHE_LINE_SIZE) HybridMutex RecycleMutex;
+  atomic_uptr MinSize = {};
+  atomic_uptr MaxSize = {};
+  alignas(SCUDO_CACHE_LINE_SIZE) atomic_uptr MaxCacheSize = {};
+
+  void NOINLINE recycle(uptr MinSize, Callback Cb) {
+    CacheT Tmp;
+    Tmp.init();
+    {
+      ScopedLock L(CacheMutex);
+      // Go over the batches and merge partially filled ones to
+      // save some memory, otherwise batches themselves (since the memory used
+      // by them is counted against quarantine limit) can overcome the actual
+      // user's quarantined chunks, which diminishes the purpose of the
+      // quarantine.
+      const uptr CacheSize = Cache.getSize();
+      const uptr OverheadSize = Cache.getOverheadSize();
+      DCHECK_GE(CacheSize, OverheadSize);
+      // Do the merge only when overhead exceeds this predefined limit (might
+      // require some tuning). It saves us merge attempt when the batch list
+      // quarantine is unlikely to contain batches suitable for merge.
+      constexpr uptr OverheadThresholdPercents = 100;
+      if (CacheSize > OverheadSize &&
+          OverheadSize * (100 + OverheadThresholdPercents) >
+              CacheSize * OverheadThresholdPercents) {
+        Cache.mergeBatches(&Tmp);
+      }
+      // Extract enough chunks from the quarantine to get below the max
+      // quarantine size and leave some leeway for the newly quarantined chunks.
+      while (Cache.getSize() > MinSize)
+        Tmp.enqueueBatch(Cache.dequeueBatch());
+    }
+    RecycleMutex.unlock();
+    doRecycle(&Tmp, Cb);
+  }
+
+  void NOINLINE doRecycle(CacheT *C, Callback Cb) {
+    while (QuarantineBatch *B = C->dequeueBatch()) {
+      const u32 Seed = static_cast<u32>(
+          (reinterpret_cast<uptr>(B) ^ reinterpret_cast<uptr>(C)) >> 4);
+      B->shuffle(Seed);
+      constexpr uptr NumberOfPrefetch = 8UL;
+      CHECK(NumberOfPrefetch <= ARRAY_SIZE(B->Batch));
+      for (uptr I = 0; I < NumberOfPrefetch; I++)
+        PREFETCH(B->Batch[I]);
+      for (uptr I = 0, Count = B->Count; I < Count; I++) {
+        if (I + NumberOfPrefetch < Count)
+          PREFETCH(B->Batch[I + NumberOfPrefetch]);
+        Cb.recycle(reinterpret_cast<Node *>(B->Batch[I]));
+      }
+      Cb.deallocate(B);
+    }
+  }
+};
+
+} // namespace scudo
+
+#endif // SCUDO_QUARANTINE_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/release.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/release.cpp
new file mode 100644
index 0000000000..5d7c6c5fc1
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/release.cpp
@@ -0,0 +1,16 @@
+//===-- release.cpp ---------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "release.h"
+
+namespace scudo {
+
+HybridMutex PackedCounterArray::Mutex = {};
+uptr PackedCounterArray::StaticBuffer[PackedCounterArray::StaticBufferCount];
+
+} // namespace scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/release.h b/contrib/libs/clang14-rt/lib/scudo/standalone/release.h
new file mode 100644
index 0000000000..293a8bc27b
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/release.h
@@ -0,0 +1,333 @@
+//===-- release.h -----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_RELEASE_H_
+#define SCUDO_RELEASE_H_
+
+#include "common.h"
+#include "list.h"
+#include "mutex.h"
+
+namespace scudo {
+
+class ReleaseRecorder {
+public:
+  ReleaseRecorder(uptr Base, MapPlatformData *Data = nullptr)
+      : Base(Base), Data(Data) {}
+
+  uptr getReleasedRangesCount() const { return ReleasedRangesCount; }
+
+  uptr getReleasedBytes() const { return ReleasedBytes; }
+
+  uptr getBase() const { return Base; }
+
+  // Releases [From, To) range of pages back to OS.
+  void releasePageRangeToOS(uptr From, uptr To) {
+    const uptr Size = To - From;
+    releasePagesToOS(Base, From, Size, Data);
+    ReleasedRangesCount++;
+    ReleasedBytes += Size;
+  }
+
+private:
+  uptr ReleasedRangesCount = 0;
+  uptr ReleasedBytes = 0;
+  uptr Base = 0;
+  MapPlatformData *Data = nullptr;
+};
+
+// A packed array of Counters. Each counter occupies 2^N bits, enough to store
+// counter's MaxValue. Ctor will try to use a static buffer first, and if that
+// fails (the buffer is too small or already locked), will allocate the
+// required Buffer via map(). The caller is expected to check whether the
+// initialization was successful by checking isAllocated() result. For
+// performance sake, none of the accessors check the validity of the arguments,
+// It is assumed that Index is always in [0, N) range and the value is not
+// incremented past MaxValue.
+class PackedCounterArray {
+public:
+  PackedCounterArray(uptr NumberOfRegions, uptr CountersPerRegion,
+                     uptr MaxValue)
+      : Regions(NumberOfRegions), NumCounters(CountersPerRegion) {
+    DCHECK_GT(Regions, 0);
+    DCHECK_GT(NumCounters, 0);
+    DCHECK_GT(MaxValue, 0);
+    constexpr uptr MaxCounterBits = sizeof(*Buffer) * 8UL;
+    // Rounding counter storage size up to the power of two allows for using
+    // bit shifts calculating particular counter's Index and offset.
+    const uptr CounterSizeBits =
+        roundUpToPowerOfTwo(getMostSignificantSetBitIndex(MaxValue) + 1);
+    DCHECK_LE(CounterSizeBits, MaxCounterBits);
+    CounterSizeBitsLog = getLog2(CounterSizeBits);
+    CounterMask = ~(static_cast<uptr>(0)) >> (MaxCounterBits - CounterSizeBits);
+
+    const uptr PackingRatio = MaxCounterBits >> CounterSizeBitsLog;
+    DCHECK_GT(PackingRatio, 0);
+    PackingRatioLog = getLog2(PackingRatio);
+    BitOffsetMask = PackingRatio - 1;
+
+    SizePerRegion =
+        roundUpTo(NumCounters, static_cast<uptr>(1U) << PackingRatioLog) >>
+        PackingRatioLog;
+    BufferSize = SizePerRegion * sizeof(*Buffer) * Regions;
+    if (BufferSize <= (StaticBufferCount * sizeof(Buffer[0])) &&
+        Mutex.tryLock()) {
+      Buffer = &StaticBuffer[0];
+      memset(Buffer, 0, BufferSize);
+    } else {
+      Buffer = reinterpret_cast<uptr *>(
+          map(nullptr, roundUpTo(BufferSize, getPageSizeCached()),
+              "scudo:counters", MAP_ALLOWNOMEM));
+    }
+  }
+  ~PackedCounterArray() {
+    if (!isAllocated())
+      return;
+    if (Buffer == &StaticBuffer[0])
+      Mutex.unlock();
+    else
+      unmap(reinterpret_cast<void *>(Buffer),
+            roundUpTo(BufferSize, getPageSizeCached()));
+  }
+
+  bool isAllocated() const { return !!Buffer; }
+
+  uptr getCount() const { return NumCounters; }
+
+  uptr get(uptr Region, uptr I) const {
+    DCHECK_LT(Region, Regions);
+    DCHECK_LT(I, NumCounters);
+    const uptr Index = I >> PackingRatioLog;
+    const uptr BitOffset = (I & BitOffsetMask) << CounterSizeBitsLog;
+    return (Buffer[Region * SizePerRegion + Index] >> BitOffset) & CounterMask;
+  }
+
+  void inc(uptr Region, uptr I) const {
+    DCHECK_LT(get(Region, I), CounterMask);
+    const uptr Index = I >> PackingRatioLog;
+    const uptr BitOffset = (I & BitOffsetMask) << CounterSizeBitsLog;
+    DCHECK_LT(BitOffset, SCUDO_WORDSIZE);
+    Buffer[Region * SizePerRegion + Index] += static_cast<uptr>(1U)
+                                              << BitOffset;
+  }
+
+  void incRange(uptr Region, uptr From, uptr To) const {
+    DCHECK_LE(From, To);
+    const uptr Top = Min(To + 1, NumCounters);
+    for (uptr I = From; I < Top; I++)
+      inc(Region, I);
+  }
+
+  uptr getBufferSize() const { return BufferSize; }
+
+  static const uptr StaticBufferCount = 2048U;
+
+private:
+  const uptr Regions;
+  const uptr NumCounters;
+  uptr CounterSizeBitsLog;
+  uptr CounterMask;
+  uptr PackingRatioLog;
+  uptr BitOffsetMask;
+
+  uptr SizePerRegion;
+  uptr BufferSize;
+  uptr *Buffer;
+
+  static HybridMutex Mutex;
+  static uptr StaticBuffer[StaticBufferCount];
+};
+
+template <class ReleaseRecorderT> class FreePagesRangeTracker {
+public:
+  explicit FreePagesRangeTracker(ReleaseRecorderT *Recorder)
+      : Recorder(Recorder), PageSizeLog(getLog2(getPageSizeCached())) {}
+
+  void processNextPage(bool Freed) {
+    if (Freed) {
+      if (!InRange) {
+        CurrentRangeStatePage = CurrentPage;
+        InRange = true;
+      }
+    } else {
+      closeOpenedRange();
+    }
+    CurrentPage++;
+  }
+
+  void skipPages(uptr N) {
+    closeOpenedRange();
+    CurrentPage += N;
+  }
+
+  void finish() { closeOpenedRange(); }
+
+private:
+  void closeOpenedRange() {
+    if (InRange) {
+      Recorder->releasePageRangeToOS((CurrentRangeStatePage << PageSizeLog),
+                                     (CurrentPage << PageSizeLog));
+      InRange = false;
+    }
+  }
+
+  ReleaseRecorderT *const Recorder;
+  const uptr PageSizeLog;
+  bool InRange = false;
+  uptr CurrentPage = 0;
+  uptr CurrentRangeStatePage = 0;
+};
+
+template <class TransferBatchT, class ReleaseRecorderT, typename DecompactPtrT,
+          typename SkipRegionT>
+NOINLINE void
+releaseFreeMemoryToOS(const IntrusiveList<TransferBatchT> &FreeList,
+                      uptr RegionSize, uptr NumberOfRegions, uptr BlockSize,
+                      ReleaseRecorderT *Recorder, DecompactPtrT DecompactPtr,
+                      SkipRegionT SkipRegion) {
+  const uptr PageSize = getPageSizeCached();
+
+  // Figure out the number of chunks per page and whether we can take a fast
+  // path (the number of chunks per page is the same for all pages).
+  uptr FullPagesBlockCountMax;
+  bool SameBlockCountPerPage;
+  if (BlockSize <= PageSize) {
+    if (PageSize % BlockSize == 0) {
+      // Same number of chunks per page, no cross overs.
+      FullPagesBlockCountMax = PageSize / BlockSize;
+      SameBlockCountPerPage = true;
+    } else if (BlockSize % (PageSize % BlockSize) == 0) {
+      // Some chunks are crossing page boundaries, which means that the page
+      // contains one or two partial chunks, but all pages contain the same
+      // number of chunks.
+      FullPagesBlockCountMax = PageSize / BlockSize + 1;
+      SameBlockCountPerPage = true;
+    } else {
+      // Some chunks are crossing page boundaries, which means that the page
+      // contains one or two partial chunks.
+      FullPagesBlockCountMax = PageSize / BlockSize + 2;
+      SameBlockCountPerPage = false;
+    }
+  } else {
+    if (BlockSize % PageSize == 0) {
+      // One chunk covers multiple pages, no cross overs.
+      FullPagesBlockCountMax = 1;
+      SameBlockCountPerPage = true;
+    } else {
+      // One chunk covers multiple pages, Some chunks are crossing page
+      // boundaries. Some pages contain one chunk, some contain two.
+      FullPagesBlockCountMax = 2;
+      SameBlockCountPerPage = false;
+    }
+  }
+
+  const uptr PagesCount = roundUpTo(RegionSize, PageSize) / PageSize;
+  PackedCounterArray Counters(NumberOfRegions, PagesCount,
+                              FullPagesBlockCountMax);
+  if (!Counters.isAllocated())
+    return;
+
+  const uptr PageSizeLog = getLog2(PageSize);
+  const uptr RoundedRegionSize = PagesCount << PageSizeLog;
+  const uptr RoundedSize = NumberOfRegions * RoundedRegionSize;
+
+  // Iterate over free chunks and count how many free chunks affect each
+  // allocated page.
+  if (BlockSize <= PageSize && PageSize % BlockSize == 0) {
+    // Each chunk affects one page only.
+    for (const auto &It : FreeList) {
+      for (u32 I = 0; I < It.getCount(); I++) {
+        const uptr P = DecompactPtr(It.get(I)) - Recorder->getBase();
+        if (P >= RoundedSize)
+          continue;
+        const uptr RegionIndex = NumberOfRegions == 1U ? 0 : P / RegionSize;
+        const uptr PInRegion = P - RegionIndex * RegionSize;
+        Counters.inc(RegionIndex, PInRegion >> PageSizeLog);
+      }
+    }
+  } else {
+    // In all other cases chunks might affect more than one page.
+    DCHECK_GE(RegionSize, BlockSize);
+    const uptr LastBlockInRegion = ((RegionSize / BlockSize) - 1U) * BlockSize;
+    for (const auto &It : FreeList) {
+      for (u32 I = 0; I < It.getCount(); I++) {
+        const uptr P = DecompactPtr(It.get(I)) - Recorder->getBase();
+        if (P >= RoundedSize)
+          continue;
+        const uptr RegionIndex = NumberOfRegions == 1U ? 0 : P / RegionSize;
+        uptr PInRegion = P - RegionIndex * RegionSize;
+        Counters.incRange(RegionIndex, PInRegion >> PageSizeLog,
+                          (PInRegion + BlockSize - 1) >> PageSizeLog);
+        // The last block in a region might straddle a page, so if it's
+        // free, we mark the following "pretend" memory block(s) as free.
+        if (PInRegion == LastBlockInRegion) {
+          PInRegion += BlockSize;
+          while (PInRegion < RoundedRegionSize) {
+            Counters.incRange(RegionIndex, PInRegion >> PageSizeLog,
+                              (PInRegion + BlockSize - 1) >> PageSizeLog);
+            PInRegion += BlockSize;
+          }
+        }
+      }
+    }
+  }
+
+  // Iterate over pages detecting ranges of pages with chunk Counters equal
+  // to the expected number of chunks for the particular page.
+  FreePagesRangeTracker<ReleaseRecorderT> RangeTracker(Recorder);
+  if (SameBlockCountPerPage) {
+    // Fast path, every page has the same number of chunks affecting it.
+    for (uptr I = 0; I < NumberOfRegions; I++) {
+      if (SkipRegion(I)) {
+        RangeTracker.skipPages(PagesCount);
+        continue;
+      }
+      for (uptr J = 0; J < PagesCount; J++)
+        RangeTracker.processNextPage(Counters.get(I, J) ==
+                                     FullPagesBlockCountMax);
+    }
+  } else {
+    // Slow path, go through the pages keeping count how many chunks affect
+    // each page.
+    const uptr Pn = BlockSize < PageSize ? PageSize / BlockSize : 1;
+    const uptr Pnc = Pn * BlockSize;
+    // The idea is to increment the current page pointer by the first chunk
+    // size, middle portion size (the portion of the page covered by chunks
+    // except the first and the last one) and then the last chunk size, adding
+    // up the number of chunks on the current page and checking on every step
+    // whether the page boundary was crossed.
+    for (uptr I = 0; I < NumberOfRegions; I++) {
+      if (SkipRegion(I)) {
+        RangeTracker.skipPages(PagesCount);
+        continue;
+      }
+      uptr PrevPageBoundary = 0;
+      uptr CurrentBoundary = 0;
+      for (uptr J = 0; J < PagesCount; J++) {
+        const uptr PageBoundary = PrevPageBoundary + PageSize;
+        uptr BlocksPerPage = Pn;
+        if (CurrentBoundary < PageBoundary) {
+          if (CurrentBoundary > PrevPageBoundary)
+            BlocksPerPage++;
+          CurrentBoundary += Pnc;
+          if (CurrentBoundary < PageBoundary) {
+            BlocksPerPage++;
+            CurrentBoundary += BlockSize;
+          }
+        }
+        PrevPageBoundary = PageBoundary;
+        RangeTracker.processNextPage(Counters.get(I, J) == BlocksPerPage);
+      }
+    }
+  }
+  RangeTracker.finish();
+}
+
+} // namespace scudo
+
+#endif // SCUDO_RELEASE_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/report.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/report.cpp
new file mode 100644
index 0000000000..561c7c51f4
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/report.cpp
@@ -0,0 +1,192 @@
+//===-- report.cpp ----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "report.h"
+
+#include "atomic_helpers.h"
+#include "string_utils.h"
+
+#include <stdarg.h>
+
+namespace scudo {
+
+class ScopedErrorReport {
+public:
+  ScopedErrorReport() : Message() { Message.append("Scudo ERROR: "); }
+  void append(const char *Format, ...) {
+    va_list Args;
+    va_start(Args, Format);
+    Message.append(Format, Args);
+    va_end(Args);
+  }
+  NORETURN ~ScopedErrorReport() {
+    outputRaw(Message.data());
+    setAbortMessage(Message.data());
+    die();
+  }
+
+private:
+  ScopedString Message;
+};
+
+inline void NORETURN trap() { __builtin_trap(); }
+
+// This could potentially be called recursively if a CHECK fails in the reports.
+void NORETURN reportCheckFailed(const char *File, int Line,
+                                const char *Condition, u64 Value1, u64 Value2) {
+  static atomic_u32 NumberOfCalls;
+  if (atomic_fetch_add(&NumberOfCalls, 1, memory_order_relaxed) > 2) {
+    // TODO(kostyak): maybe sleep here?
+    trap();
+  }
+  ScopedErrorReport Report;
+  Report.append("CHECK failed @ %s:%d %s ((u64)op1=%llu, (u64)op2=%llu)\n",
+                File, Line, Condition, Value1, Value2);
+}
+
+// Generic string fatal error message.
+void NORETURN reportError(const char *Message) {
+  ScopedErrorReport Report;
+  Report.append("%s\n", Message);
+}
+
+void NORETURN reportInvalidFlag(const char *FlagType, const char *Value) {
+  ScopedErrorReport Report;
+  Report.append("invalid value for %s option: '%s'\n", FlagType, Value);
+}
+
+// The checksum of a chunk header is invalid. This could be caused by an
+// {over,under}write of the header, a pointer that is not an actual chunk.
+void NORETURN reportHeaderCorruption(void *Ptr) {
+  ScopedErrorReport Report;
+  Report.append("corrupted chunk header at address %p\n", Ptr);
+}
+
+// Two threads have attempted to modify a chunk header at the same time. This is
+// symptomatic of a race-condition in the application code, or general lack of
+// proper locking.
+void NORETURN reportHeaderRace(void *Ptr) {
+  ScopedErrorReport Report;
+  Report.append("race on chunk header at address %p\n", Ptr);
+}
+
+// The allocator was compiled with parameters that conflict with field size
+// requirements.
+void NORETURN reportSanityCheckError(const char *Field) {
+  ScopedErrorReport Report;
+  Report.append("maximum possible %s doesn't fit in header\n", Field);
+}
+
+// We enforce a maximum alignment, to keep fields smaller and generally prevent
+// integer overflows, or unexpected corner cases.
+void NORETURN reportAlignmentTooBig(uptr Alignment, uptr MaxAlignment) {
+  ScopedErrorReport Report;
+  Report.append("invalid allocation alignment: %zu exceeds maximum supported "
+                "alignment of %zu\n",
+                Alignment, MaxAlignment);
+}
+
+// See above, we also enforce a maximum size.
+void NORETURN reportAllocationSizeTooBig(uptr UserSize, uptr TotalSize,
+                                         uptr MaxSize) {
+  ScopedErrorReport Report;
+  Report.append("requested allocation size %zu (%zu after adjustments) exceeds "
+                "maximum supported size of %zu\n",
+                UserSize, TotalSize, MaxSize);
+}
+
+void NORETURN reportOutOfMemory(uptr RequestedSize) {
+  ScopedErrorReport Report;
+  Report.append("out of memory trying to allocate %zu bytes\n", RequestedSize);
+}
+
+static const char *stringifyAction(AllocatorAction Action) {
+  switch (Action) {
+  case AllocatorAction::Recycling:
+    return "recycling";
+  case AllocatorAction::Deallocating:
+    return "deallocating";
+  case AllocatorAction::Reallocating:
+    return "reallocating";
+  case AllocatorAction::Sizing:
+    return "sizing";
+  }
+  return "<invalid action>";
+}
+
+// The chunk is not in a state congruent with the operation we want to perform.
+// This is usually the case with a double-free, a realloc of a freed pointer.
+void NORETURN reportInvalidChunkState(AllocatorAction Action, void *Ptr) {
+  ScopedErrorReport Report;
+  Report.append("invalid chunk state when %s address %p\n",
+                stringifyAction(Action), Ptr);
+}
+
+void NORETURN reportMisalignedPointer(AllocatorAction Action, void *Ptr) {
+  ScopedErrorReport Report;
+  Report.append("misaligned pointer when %s address %p\n",
+                stringifyAction(Action), Ptr);
+}
+
+// The deallocation function used is at odds with the one used to allocate the
+// chunk (eg: new[]/delete or malloc/delete, and so on).
+void NORETURN reportDeallocTypeMismatch(AllocatorAction Action, void *Ptr,
+                                        u8 TypeA, u8 TypeB) {
+  ScopedErrorReport Report;
+  Report.append("allocation type mismatch when %s address %p (%d vs %d)\n",
+                stringifyAction(Action), Ptr, TypeA, TypeB);
+}
+
+// The size specified to the delete operator does not match the one that was
+// passed to new when allocating the chunk.
+void NORETURN reportDeleteSizeMismatch(void *Ptr, uptr Size,
+                                       uptr ExpectedSize) {
+  ScopedErrorReport Report;
+  Report.append(
+      "invalid sized delete when deallocating address %p (%zu vs %zu)\n", Ptr,
+      Size, ExpectedSize);
+}
+
+void NORETURN reportAlignmentNotPowerOfTwo(uptr Alignment) {
+  ScopedErrorReport Report;
+  Report.append(
+      "invalid allocation alignment: %zu, alignment must be a power of two\n",
+      Alignment);
+}
+
+void NORETURN reportCallocOverflow(uptr Count, uptr Size) {
+  ScopedErrorReport Report;
+  Report.append("calloc parameters overflow: count * size (%zu * %zu) cannot "
+                "be represented with type size_t\n",
+                Count, Size);
+}
+
+void NORETURN reportInvalidPosixMemalignAlignment(uptr Alignment) {
+  ScopedErrorReport Report;
+  Report.append(
+      "invalid alignment requested in posix_memalign: %zu, alignment must be a "
+      "power of two and a multiple of sizeof(void *) == %zu\n",
+      Alignment, sizeof(void *));
+}
+
+void NORETURN reportPvallocOverflow(uptr Size) {
+  ScopedErrorReport Report;
+  Report.append("pvalloc parameters overflow: size %zu rounded up to system "
+                "page size %zu cannot be represented in type size_t\n",
+                Size, getPageSizeCached());
+}
+
+void NORETURN reportInvalidAlignedAllocAlignment(uptr Alignment, uptr Size) {
+  ScopedErrorReport Report;
+  Report.append("invalid alignment requested in aligned_alloc: %zu, alignment "
+                "must be a power of two and the requested size %zu must be a "
+                "multiple of alignment\n",
+                Alignment, Size);
+}
+
+} // namespace scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/report.h b/contrib/libs/clang14-rt/lib/scudo/standalone/report.h
new file mode 100644
index 0000000000..14e4e799b7
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/report.h
@@ -0,0 +1,57 @@
+//===-- report.h ------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_REPORT_H_
+#define SCUDO_REPORT_H_
+
+#include "internal_defs.h"
+
+namespace scudo {
+
+// Reports are *fatal* unless stated otherwise.
+
+// Generic error.
+void NORETURN reportError(const char *Message);
+
+// Flags related errors.
+void NORETURN reportInvalidFlag(const char *FlagType, const char *Value);
+
+// Chunk header related errors.
+void NORETURN reportHeaderCorruption(void *Ptr);
+void NORETURN reportHeaderRace(void *Ptr);
+
+// Sanity checks related error.
+void NORETURN reportSanityCheckError(const char *Field);
+
+// Combined allocator errors.
+void NORETURN reportAlignmentTooBig(uptr Alignment, uptr MaxAlignment);
+void NORETURN reportAllocationSizeTooBig(uptr UserSize, uptr TotalSize,
+                                         uptr MaxSize);
+void NORETURN reportOutOfMemory(uptr RequestedSize);
+enum class AllocatorAction : u8 {
+  Recycling,
+  Deallocating,
+  Reallocating,
+  Sizing,
+};
+void NORETURN reportInvalidChunkState(AllocatorAction Action, void *Ptr);
+void NORETURN reportMisalignedPointer(AllocatorAction Action, void *Ptr);
+void NORETURN reportDeallocTypeMismatch(AllocatorAction Action, void *Ptr,
+                                        u8 TypeA, u8 TypeB);
+void NORETURN reportDeleteSizeMismatch(void *Ptr, uptr Size, uptr ExpectedSize);
+
+// C wrappers errors.
+void NORETURN reportAlignmentNotPowerOfTwo(uptr Alignment);
+void NORETURN reportInvalidPosixMemalignAlignment(uptr Alignment);
+void NORETURN reportCallocOverflow(uptr Count, uptr Size);
+void NORETURN reportPvallocOverflow(uptr Size);
+void NORETURN reportInvalidAlignedAllocAlignment(uptr Size, uptr Alignment);
+
+} // namespace scudo
+
+#endif // SCUDO_REPORT_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/secondary.h b/contrib/libs/clang14-rt/lib/scudo/standalone/secondary.h
new file mode 100644
index 0000000000..abb58a2882
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/secondary.h
@@ -0,0 +1,614 @@
+//===-- secondary.h ---------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_SECONDARY_H_
+#define SCUDO_SECONDARY_H_
+
+#include "chunk.h"
+#include "common.h"
+#include "list.h"
+#include "memtag.h"
+#include "mutex.h"
+#include "options.h"
+#include "stats.h"
+#include "string_utils.h"
+
+namespace scudo {
+
+// This allocator wraps the platform allocation primitives, and as such is on
+// the slower side and should preferably be used for larger sized allocations.
+// Blocks allocated will be preceded and followed by a guard page, and hold
+// their own header that is not checksummed: the guard pages and the Combined
+// header should be enough for our purpose.
+
+namespace LargeBlock {
+
+struct alignas(Max<uptr>(archSupportsMemoryTagging()
+                             ? archMemoryTagGranuleSize()
+                             : 1,
+                         1U << SCUDO_MIN_ALIGNMENT_LOG)) Header {
+  LargeBlock::Header *Prev;
+  LargeBlock::Header *Next;
+  uptr CommitBase;
+  uptr CommitSize;
+  uptr MapBase;
+  uptr MapSize;
+  [[no_unique_address]] MapPlatformData Data;
+};
+
+static_assert(sizeof(Header) % (1U << SCUDO_MIN_ALIGNMENT_LOG) == 0, "");
+static_assert(!archSupportsMemoryTagging() ||
+                  sizeof(Header) % archMemoryTagGranuleSize() == 0,
+              "");
+
+constexpr uptr getHeaderSize() { return sizeof(Header); }
+
+template <typename Config> static uptr addHeaderTag(uptr Ptr) {
+  if (allocatorSupportsMemoryTagging<Config>())
+    return addFixedTag(Ptr, 1);
+  return Ptr;
+}
+
+template <typename Config> static Header *getHeader(uptr Ptr) {
+  return reinterpret_cast<Header *>(addHeaderTag<Config>(Ptr)) - 1;
+}
+
+template <typename Config> static Header *getHeader(const void *Ptr) {
+  return getHeader<Config>(reinterpret_cast<uptr>(Ptr));
+}
+
+} // namespace LargeBlock
+
+static void unmap(LargeBlock::Header *H) {
+  MapPlatformData Data = H->Data;
+  unmap(reinterpret_cast<void *>(H->MapBase), H->MapSize, UNMAP_ALL, &Data);
+}
+
+class MapAllocatorNoCache {
+public:
+  void init(UNUSED s32 ReleaseToOsInterval) {}
+  bool retrieve(UNUSED Options Options, UNUSED uptr Size, UNUSED uptr Alignment,
+                UNUSED LargeBlock::Header **H, UNUSED bool *Zeroed) {
+    return false;
+  }
+  void store(UNUSED Options Options, LargeBlock::Header *H) { unmap(H); }
+  bool canCache(UNUSED uptr Size) { return false; }
+  void disable() {}
+  void enable() {}
+  void releaseToOS() {}
+  void disableMemoryTagging() {}
+  void unmapTestOnly() {}
+  bool setOption(Option O, UNUSED sptr Value) {
+    if (O == Option::ReleaseInterval || O == Option::MaxCacheEntriesCount ||
+        O == Option::MaxCacheEntrySize)
+      return false;
+    // Not supported by the Secondary Cache, but not an error either.
+    return true;
+  }
+};
+
+static const uptr MaxUnusedCachePages = 4U;
+
+template <typename Config>
+void mapSecondary(Options Options, uptr CommitBase, uptr CommitSize,
+                  uptr AllocPos, uptr Flags, MapPlatformData *Data) {
+  const uptr MaxUnusedCacheBytes = MaxUnusedCachePages * getPageSizeCached();
+  if (useMemoryTagging<Config>(Options) && CommitSize > MaxUnusedCacheBytes) {
+    const uptr UntaggedPos = Max(AllocPos, CommitBase + MaxUnusedCacheBytes);
+    map(reinterpret_cast<void *>(CommitBase), UntaggedPos - CommitBase,
+        "scudo:secondary", MAP_RESIZABLE | MAP_MEMTAG | Flags, Data);
+    map(reinterpret_cast<void *>(UntaggedPos),
+        CommitBase + CommitSize - UntaggedPos, "scudo:secondary",
+        MAP_RESIZABLE | Flags, Data);
+  } else {
+    map(reinterpret_cast<void *>(CommitBase), CommitSize, "scudo:secondary",
+        MAP_RESIZABLE | (useMemoryTagging<Config>(Options) ? MAP_MEMTAG : 0) |
+            Flags,
+        Data);
+  }
+}
+
+template <typename Config> class MapAllocatorCache {
+public:
+  // Ensure the default maximum specified fits the array.
+  static_assert(Config::SecondaryCacheDefaultMaxEntriesCount <=
+                    Config::SecondaryCacheEntriesArraySize,
+                "");
+
+  void init(s32 ReleaseToOsInterval) {
+    DCHECK_EQ(EntriesCount, 0U);
+    setOption(Option::MaxCacheEntriesCount,
+              static_cast<sptr>(Config::SecondaryCacheDefaultMaxEntriesCount));
+    setOption(Option::MaxCacheEntrySize,
+              static_cast<sptr>(Config::SecondaryCacheDefaultMaxEntrySize));
+    setOption(Option::ReleaseInterval, static_cast<sptr>(ReleaseToOsInterval));
+  }
+
+  void store(Options Options, LargeBlock::Header *H) {
+    if (!canCache(H->CommitSize))
+      return unmap(H);
+
+    bool EntryCached = false;
+    bool EmptyCache = false;
+    const s32 Interval = atomic_load_relaxed(&ReleaseToOsIntervalMs);
+    const u64 Time = getMonotonicTime();
+    const u32 MaxCount = atomic_load_relaxed(&MaxEntriesCount);
+    CachedBlock Entry;
+    Entry.CommitBase = H->CommitBase;
+    Entry.CommitSize = H->CommitSize;
+    Entry.MapBase = H->MapBase;
+    Entry.MapSize = H->MapSize;
+    Entry.BlockBegin = reinterpret_cast<uptr>(H + 1);
+    Entry.Data = H->Data;
+    Entry.Time = Time;
+    if (useMemoryTagging<Config>(Options)) {
+      if (Interval == 0 && !SCUDO_FUCHSIA) {
+        // Release the memory and make it inaccessible at the same time by
+        // creating a new MAP_NOACCESS mapping on top of the existing mapping.
+        // Fuchsia does not support replacing mappings by creating a new mapping
+        // on top so we just do the two syscalls there.
+        Entry.Time = 0;
+        mapSecondary<Config>(Options, Entry.CommitBase, Entry.CommitSize,
+                             Entry.CommitBase, MAP_NOACCESS, &Entry.Data);
+      } else {
+        setMemoryPermission(Entry.CommitBase, Entry.CommitSize, MAP_NOACCESS,
+                            &Entry.Data);
+      }
+    } else if (Interval == 0) {
+      releasePagesToOS(Entry.CommitBase, 0, Entry.CommitSize, &Entry.Data);
+      Entry.Time = 0;
+    }
+    do {
+      ScopedLock L(Mutex);
+      if (useMemoryTagging<Config>(Options) && QuarantinePos == -1U) {
+        // If we get here then memory tagging was disabled in between when we
+        // read Options and when we locked Mutex. We can't insert our entry into
+        // the quarantine or the cache because the permissions would be wrong so
+        // just unmap it.
+        break;
+      }
+      if (Config::SecondaryCacheQuarantineSize &&
+          useMemoryTagging<Config>(Options)) {
+        QuarantinePos =
+            (QuarantinePos + 1) % Max(Config::SecondaryCacheQuarantineSize, 1u);
+        if (!Quarantine[QuarantinePos].CommitBase) {
+          Quarantine[QuarantinePos] = Entry;
+          return;
+        }
+        CachedBlock PrevEntry = Quarantine[QuarantinePos];
+        Quarantine[QuarantinePos] = Entry;
+        if (OldestTime == 0)
+          OldestTime = Entry.Time;
+        Entry = PrevEntry;
+      }
+      if (EntriesCount >= MaxCount) {
+        if (IsFullEvents++ == 4U)
+          EmptyCache = true;
+      } else {
+        for (u32 I = 0; I < MaxCount; I++) {
+          if (Entries[I].CommitBase)
+            continue;
+          if (I != 0)
+            Entries[I] = Entries[0];
+          Entries[0] = Entry;
+          EntriesCount++;
+          if (OldestTime == 0)
+            OldestTime = Entry.Time;
+          EntryCached = true;
+          break;
+        }
+      }
+    } while (0);
+    if (EmptyCache)
+      empty();
+    else if (Interval >= 0)
+      releaseOlderThan(Time - static_cast<u64>(Interval) * 1000000);
+    if (!EntryCached)
+      unmap(reinterpret_cast<void *>(Entry.MapBase), Entry.MapSize, UNMAP_ALL,
+            &Entry.Data);
+  }
+
+  bool retrieve(Options Options, uptr Size, uptr Alignment,
+                LargeBlock::Header **H, bool *Zeroed) {
+    const uptr PageSize = getPageSizeCached();
+    const u32 MaxCount = atomic_load_relaxed(&MaxEntriesCount);
+    bool Found = false;
+    CachedBlock Entry;
+    uptr HeaderPos;
+    {
+      ScopedLock L(Mutex);
+      if (EntriesCount == 0)
+        return false;
+      for (u32 I = 0; I < MaxCount; I++) {
+        const uptr CommitBase = Entries[I].CommitBase;
+        if (!CommitBase)
+          continue;
+        const uptr CommitSize = Entries[I].CommitSize;
+        const uptr AllocPos =
+            roundDownTo(CommitBase + CommitSize - Size, Alignment);
+        HeaderPos =
+            AllocPos - Chunk::getHeaderSize() - LargeBlock::getHeaderSize();
+        if (HeaderPos > CommitBase + CommitSize)
+          continue;
+        if (HeaderPos < CommitBase ||
+            AllocPos > CommitBase + PageSize * MaxUnusedCachePages)
+          continue;
+        Found = true;
+        Entry = Entries[I];
+        Entries[I].CommitBase = 0;
+        break;
+      }
+    }
+    if (Found) {
+      *H = reinterpret_cast<LargeBlock::Header *>(
+          LargeBlock::addHeaderTag<Config>(HeaderPos));
+      *Zeroed = Entry.Time == 0;
+      if (useMemoryTagging<Config>(Options))
+        setMemoryPermission(Entry.CommitBase, Entry.CommitSize, 0, &Entry.Data);
+      uptr NewBlockBegin = reinterpret_cast<uptr>(*H + 1);
+      if (useMemoryTagging<Config>(Options)) {
+        if (*Zeroed)
+          storeTags(LargeBlock::addHeaderTag<Config>(Entry.CommitBase),
+                    NewBlockBegin);
+        else if (Entry.BlockBegin < NewBlockBegin)
+          storeTags(Entry.BlockBegin, NewBlockBegin);
+        else
+          storeTags(untagPointer(NewBlockBegin),
+                    untagPointer(Entry.BlockBegin));
+      }
+      (*H)->CommitBase = Entry.CommitBase;
+      (*H)->CommitSize = Entry.CommitSize;
+      (*H)->MapBase = Entry.MapBase;
+      (*H)->MapSize = Entry.MapSize;
+      (*H)->Data = Entry.Data;
+      EntriesCount--;
+    }
+    return Found;
+  }
+
+  bool canCache(uptr Size) {
+    return atomic_load_relaxed(&MaxEntriesCount) != 0U &&
+           Size <= atomic_load_relaxed(&MaxEntrySize);
+  }
+
+  bool setOption(Option O, sptr Value) {
+    if (O == Option::ReleaseInterval) {
+      const s32 Interval =
+          Max(Min(static_cast<s32>(Value),
+                  Config::SecondaryCacheMaxReleaseToOsIntervalMs),
+              Config::SecondaryCacheMinReleaseToOsIntervalMs);
+      atomic_store_relaxed(&ReleaseToOsIntervalMs, Interval);
+      return true;
+    }
+    if (O == Option::MaxCacheEntriesCount) {
+      const u32 MaxCount = static_cast<u32>(Value);
+      if (MaxCount > Config::SecondaryCacheEntriesArraySize)
+        return false;
+      atomic_store_relaxed(&MaxEntriesCount, MaxCount);
+      return true;
+    }
+    if (O == Option::MaxCacheEntrySize) {
+      atomic_store_relaxed(&MaxEntrySize, static_cast<uptr>(Value));
+      return true;
+    }
+    // Not supported by the Secondary Cache, but not an error either.
+    return true;
+  }
+
+  void releaseToOS() { releaseOlderThan(UINT64_MAX); }
+
+  void disableMemoryTagging() {
+    ScopedLock L(Mutex);
+    for (u32 I = 0; I != Config::SecondaryCacheQuarantineSize; ++I) {
+      if (Quarantine[I].CommitBase) {
+        unmap(reinterpret_cast<void *>(Quarantine[I].MapBase),
+              Quarantine[I].MapSize, UNMAP_ALL, &Quarantine[I].Data);
+        Quarantine[I].CommitBase = 0;
+      }
+    }
+    const u32 MaxCount = atomic_load_relaxed(&MaxEntriesCount);
+    for (u32 I = 0; I < MaxCount; I++)
+      if (Entries[I].CommitBase)
+        setMemoryPermission(Entries[I].CommitBase, Entries[I].CommitSize, 0,
+                            &Entries[I].Data);
+    QuarantinePos = -1U;
+  }
+
+  void disable() { Mutex.lock(); }
+
+  void enable() { Mutex.unlock(); }
+
+  void unmapTestOnly() { empty(); }
+
+private:
+  void empty() {
+    struct {
+      void *MapBase;
+      uptr MapSize;
+      MapPlatformData Data;
+    } MapInfo[Config::SecondaryCacheEntriesArraySize];
+    uptr N = 0;
+    {
+      ScopedLock L(Mutex);
+      for (uptr I = 0; I < Config::SecondaryCacheEntriesArraySize; I++) {
+        if (!Entries[I].CommitBase)
+          continue;
+        MapInfo[N].MapBase = reinterpret_cast<void *>(Entries[I].MapBase);
+        MapInfo[N].MapSize = Entries[I].MapSize;
+        MapInfo[N].Data = Entries[I].Data;
+        Entries[I].CommitBase = 0;
+        N++;
+      }
+      EntriesCount = 0;
+      IsFullEvents = 0;
+    }
+    for (uptr I = 0; I < N; I++)
+      unmap(MapInfo[I].MapBase, MapInfo[I].MapSize, UNMAP_ALL,
+            &MapInfo[I].Data);
+  }
+
+  struct CachedBlock {
+    uptr CommitBase;
+    uptr CommitSize;
+    uptr MapBase;
+    uptr MapSize;
+    uptr BlockBegin;
+    [[no_unique_address]] MapPlatformData Data;
+    u64 Time;
+  };
+
+  void releaseIfOlderThan(CachedBlock &Entry, u64 Time) {
+    if (!Entry.CommitBase || !Entry.Time)
+      return;
+    if (Entry.Time > Time) {
+      if (OldestTime == 0 || Entry.Time < OldestTime)
+        OldestTime = Entry.Time;
+      return;
+    }
+    releasePagesToOS(Entry.CommitBase, 0, Entry.CommitSize, &Entry.Data);
+    Entry.Time = 0;
+  }
+
+  void releaseOlderThan(u64 Time) {
+    ScopedLock L(Mutex);
+    if (!EntriesCount || OldestTime == 0 || OldestTime > Time)
+      return;
+    OldestTime = 0;
+    for (uptr I = 0; I < Config::SecondaryCacheQuarantineSize; I++)
+      releaseIfOlderThan(Quarantine[I], Time);
+    for (uptr I = 0; I < Config::SecondaryCacheEntriesArraySize; I++)
+      releaseIfOlderThan(Entries[I], Time);
+  }
+
+  HybridMutex Mutex;
+  u32 EntriesCount = 0;
+  u32 QuarantinePos = 0;
+  atomic_u32 MaxEntriesCount = {};
+  atomic_uptr MaxEntrySize = {};
+  u64 OldestTime = 0;
+  u32 IsFullEvents = 0;
+  atomic_s32 ReleaseToOsIntervalMs = {};
+
+  CachedBlock Entries[Config::SecondaryCacheEntriesArraySize] = {};
+  CachedBlock Quarantine[Config::SecondaryCacheQuarantineSize] = {};
+};
+
+template <typename Config> class MapAllocator {
+public:
+  void init(GlobalStats *S, s32 ReleaseToOsInterval = -1) {
+    DCHECK_EQ(AllocatedBytes, 0U);
+    DCHECK_EQ(FreedBytes, 0U);
+    Cache.init(ReleaseToOsInterval);
+    Stats.init();
+    if (LIKELY(S))
+      S->link(&Stats);
+  }
+
+  void *allocate(Options Options, uptr Size, uptr AlignmentHint = 0,
+                 uptr *BlockEnd = nullptr,
+                 FillContentsMode FillContents = NoFill);
+
+  void deallocate(Options Options, void *Ptr);
+
+  static uptr getBlockEnd(void *Ptr) {
+    auto *B = LargeBlock::getHeader<Config>(Ptr);
+    return B->CommitBase + B->CommitSize;
+  }
+
+  static uptr getBlockSize(void *Ptr) {
+    return getBlockEnd(Ptr) - reinterpret_cast<uptr>(Ptr);
+  }
+
+  void getStats(ScopedString *Str) const;
+
+  void disable() {
+    Mutex.lock();
+    Cache.disable();
+  }
+
+  void enable() {
+    Cache.enable();
+    Mutex.unlock();
+  }
+
+  template <typename F> void iterateOverBlocks(F Callback) const {
+    for (const auto &H : InUseBlocks) {
+      uptr Ptr = reinterpret_cast<uptr>(&H) + LargeBlock::getHeaderSize();
+      if (allocatorSupportsMemoryTagging<Config>())
+        Ptr = untagPointer(Ptr);
+      Callback(Ptr);
+    }
+  }
+
+  uptr canCache(uptr Size) { return Cache.canCache(Size); }
+
+  bool setOption(Option O, sptr Value) { return Cache.setOption(O, Value); }
+
+  void releaseToOS() { Cache.releaseToOS(); }
+
+  void disableMemoryTagging() { Cache.disableMemoryTagging(); }
+
+  void unmapTestOnly() { Cache.unmapTestOnly(); }
+
+private:
+  typename Config::SecondaryCache Cache;
+
+  HybridMutex Mutex;
+  DoublyLinkedList<LargeBlock::Header> InUseBlocks;
+  uptr AllocatedBytes = 0;
+  uptr FreedBytes = 0;
+  uptr LargestSize = 0;
+  u32 NumberOfAllocs = 0;
+  u32 NumberOfFrees = 0;
+  LocalStats Stats;
+};
+
+// As with the Primary, the size passed to this function includes any desired
+// alignment, so that the frontend can align the user allocation. The hint
+// parameter allows us to unmap spurious memory when dealing with larger
+// (greater than a page) alignments on 32-bit platforms.
+// Due to the sparsity of address space available on those platforms, requesting
+// an allocation from the Secondary with a large alignment would end up wasting
+// VA space (even though we are not committing the whole thing), hence the need
+// to trim off some of the reserved space.
+// For allocations requested with an alignment greater than or equal to a page,
+// the committed memory will amount to something close to Size - AlignmentHint
+// (pending rounding and headers).
+template <typename Config>
+void *MapAllocator<Config>::allocate(Options Options, uptr Size, uptr Alignment,
+                                     uptr *BlockEndPtr,
+                                     FillContentsMode FillContents) {
+  if (Options.get(OptionBit::AddLargeAllocationSlack))
+    Size += 1UL << SCUDO_MIN_ALIGNMENT_LOG;
+  Alignment = Max(Alignment, uptr(1U) << SCUDO_MIN_ALIGNMENT_LOG);
+  const uptr PageSize = getPageSizeCached();
+  uptr RoundedSize =
+      roundUpTo(roundUpTo(Size, Alignment) + LargeBlock::getHeaderSize() +
+                    Chunk::getHeaderSize(),
+                PageSize);
+  if (Alignment > PageSize)
+    RoundedSize += Alignment - PageSize;
+
+  if (Alignment < PageSize && Cache.canCache(RoundedSize)) {
+    LargeBlock::Header *H;
+    bool Zeroed;
+    if (Cache.retrieve(Options, Size, Alignment, &H, &Zeroed)) {
+      const uptr BlockEnd = H->CommitBase + H->CommitSize;
+      if (BlockEndPtr)
+        *BlockEndPtr = BlockEnd;
+      uptr HInt = reinterpret_cast<uptr>(H);
+      if (allocatorSupportsMemoryTagging<Config>())
+        HInt = untagPointer(HInt);
+      const uptr PtrInt = HInt + LargeBlock::getHeaderSize();
+      void *Ptr = reinterpret_cast<void *>(PtrInt);
+      if (FillContents && !Zeroed)
+        memset(Ptr, FillContents == ZeroFill ? 0 : PatternFillByte,
+               BlockEnd - PtrInt);
+      const uptr BlockSize = BlockEnd - HInt;
+      {
+        ScopedLock L(Mutex);
+        InUseBlocks.push_back(H);
+        AllocatedBytes += BlockSize;
+        NumberOfAllocs++;
+        Stats.add(StatAllocated, BlockSize);
+        Stats.add(StatMapped, H->MapSize);
+      }
+      return Ptr;
+    }
+  }
+
+  MapPlatformData Data = {};
+  const uptr MapSize = RoundedSize + 2 * PageSize;
+  uptr MapBase = reinterpret_cast<uptr>(
+      map(nullptr, MapSize, nullptr, MAP_NOACCESS | MAP_ALLOWNOMEM, &Data));
+  if (UNLIKELY(!MapBase))
+    return nullptr;
+  uptr CommitBase = MapBase + PageSize;
+  uptr MapEnd = MapBase + MapSize;
+
+  // In the unlikely event of alignments larger than a page, adjust the amount
+  // of memory we want to commit, and trim the extra memory.
+  if (UNLIKELY(Alignment >= PageSize)) {
+    // For alignments greater than or equal to a page, the user pointer (eg: the
+    // pointer that is returned by the C or C++ allocation APIs) ends up on a
+    // page boundary , and our headers will live in the preceding page.
+    CommitBase = roundUpTo(MapBase + PageSize + 1, Alignment) - PageSize;
+    const uptr NewMapBase = CommitBase - PageSize;
+    DCHECK_GE(NewMapBase, MapBase);
+    // We only trim the extra memory on 32-bit platforms: 64-bit platforms
+    // are less constrained memory wise, and that saves us two syscalls.
+    if (SCUDO_WORDSIZE == 32U && NewMapBase != MapBase) {
+      unmap(reinterpret_cast<void *>(MapBase), NewMapBase - MapBase, 0, &Data);
+      MapBase = NewMapBase;
+    }
+    const uptr NewMapEnd =
+        CommitBase + PageSize + roundUpTo(Size, PageSize) + PageSize;
+    DCHECK_LE(NewMapEnd, MapEnd);
+    if (SCUDO_WORDSIZE == 32U && NewMapEnd != MapEnd) {
+      unmap(reinterpret_cast<void *>(NewMapEnd), MapEnd - NewMapEnd, 0, &Data);
+      MapEnd = NewMapEnd;
+    }
+  }
+
+  const uptr CommitSize = MapEnd - PageSize - CommitBase;
+  const uptr AllocPos = roundDownTo(CommitBase + CommitSize - Size, Alignment);
+  mapSecondary<Config>(Options, CommitBase, CommitSize, AllocPos, 0, &Data);
+  const uptr HeaderPos =
+      AllocPos - Chunk::getHeaderSize() - LargeBlock::getHeaderSize();
+  LargeBlock::Header *H = reinterpret_cast<LargeBlock::Header *>(
+      LargeBlock::addHeaderTag<Config>(HeaderPos));
+  if (useMemoryTagging<Config>(Options))
+    storeTags(LargeBlock::addHeaderTag<Config>(CommitBase),
+              reinterpret_cast<uptr>(H + 1));
+  H->MapBase = MapBase;
+  H->MapSize = MapEnd - MapBase;
+  H->CommitBase = CommitBase;
+  H->CommitSize = CommitSize;
+  H->Data = Data;
+  if (BlockEndPtr)
+    *BlockEndPtr = CommitBase + CommitSize;
+  {
+    ScopedLock L(Mutex);
+    InUseBlocks.push_back(H);
+    AllocatedBytes += CommitSize;
+    if (LargestSize < CommitSize)
+      LargestSize = CommitSize;
+    NumberOfAllocs++;
+    Stats.add(StatAllocated, CommitSize);
+    Stats.add(StatMapped, H->MapSize);
+  }
+  return reinterpret_cast<void *>(HeaderPos + LargeBlock::getHeaderSize());
+}
+
+template <typename Config>
+void MapAllocator<Config>::deallocate(Options Options, void *Ptr) {
+  LargeBlock::Header *H = LargeBlock::getHeader<Config>(Ptr);
+  const uptr CommitSize = H->CommitSize;
+  {
+    ScopedLock L(Mutex);
+    InUseBlocks.remove(H);
+    FreedBytes += CommitSize;
+    NumberOfFrees++;
+    Stats.sub(StatAllocated, CommitSize);
+    Stats.sub(StatMapped, H->MapSize);
+  }
+  Cache.store(Options, H);
+}
+
+template <typename Config>
+void MapAllocator<Config>::getStats(ScopedString *Str) const {
+  Str->append("Stats: MapAllocator: allocated %u times (%zuK), freed %u times "
+              "(%zuK), remains %u (%zuK) max %zuM\n",
+              NumberOfAllocs, AllocatedBytes >> 10, NumberOfFrees,
+              FreedBytes >> 10, NumberOfAllocs - NumberOfFrees,
+              (AllocatedBytes - FreedBytes) >> 10, LargestSize >> 20);
+}
+
+} // namespace scudo
+
+#endif // SCUDO_SECONDARY_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/size_class_map.h b/contrib/libs/clang14-rt/lib/scudo/standalone/size_class_map.h
new file mode 100644
index 0000000000..28b16d976e
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/size_class_map.h
@@ -0,0 +1,374 @@
+//===-- size_class_map.h ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_SIZE_CLASS_MAP_H_
+#define SCUDO_SIZE_CLASS_MAP_H_
+
+#include "chunk.h"
+#include "common.h"
+#include "string_utils.h"
+
+namespace scudo {
+
+inline uptr scaledLog2(uptr Size, uptr ZeroLog, uptr LogBits) {
+  const uptr L = getMostSignificantSetBitIndex(Size);
+  const uptr LBits = (Size >> (L - LogBits)) - (1 << LogBits);
+  const uptr HBits = (L - ZeroLog) << LogBits;
+  return LBits + HBits;
+}
+
+template <typename Config> struct SizeClassMapBase {
+  static u32 getMaxCachedHint(uptr Size) {
+    DCHECK_NE(Size, 0);
+    u32 N;
+    // Force a 32-bit division if the template parameters allow for it.
+    if (Config::MaxBytesCachedLog > 31 || Config::MaxSizeLog > 31)
+      N = static_cast<u32>((1UL << Config::MaxBytesCachedLog) / Size);
+    else
+      N = (1U << Config::MaxBytesCachedLog) / static_cast<u32>(Size);
+    return Max(1U, Min(Config::MaxNumCachedHint, N));
+  }
+};
+
+// SizeClassMap maps allocation sizes into size classes and back, in an
+// efficient table-free manner.
+//
+// Class 0 is a special class that doesn't abide by the same rules as other
+// classes. The allocator uses it to hold batches.
+//
+// The other sizes are controlled by the template parameters:
+// - MinSizeLog: defines the first class as 2^MinSizeLog bytes.
+// - MaxSizeLog: defines the last class as 2^MaxSizeLog bytes.
+// - MidSizeLog: classes increase with step 2^MinSizeLog from 2^MinSizeLog to
+//               2^MidSizeLog bytes.
+// - NumBits: the number of non-zero bits in sizes after 2^MidSizeLog.
+//            eg. with NumBits==3 all size classes after 2^MidSizeLog look like
+//            0b1xx0..0 (where x is either 0 or 1).
+//
+// This class also gives a hint to a thread-caching allocator about the amount
+// of chunks that can be cached per-thread:
+// - MaxNumCachedHint is a hint for the max number of chunks cached per class.
+// - 2^MaxBytesCachedLog is the max number of bytes cached per class.
+template <typename Config>
+class FixedSizeClassMap : public SizeClassMapBase<Config> {
+  typedef SizeClassMapBase<Config> Base;
+
+  static const uptr MinSize = 1UL << Config::MinSizeLog;
+  static const uptr MidSize = 1UL << Config::MidSizeLog;
+  static const uptr MidClass = MidSize / MinSize;
+  static const u8 S = Config::NumBits - 1;
+  static const uptr M = (1UL << S) - 1;
+
+public:
+  static const u32 MaxNumCachedHint = Config::MaxNumCachedHint;
+
+  static const uptr MaxSize = (1UL << Config::MaxSizeLog) + Config::SizeDelta;
+  static const uptr NumClasses =
+      MidClass + ((Config::MaxSizeLog - Config::MidSizeLog) << S) + 1;
+  static_assert(NumClasses <= 256, "");
+  static const uptr LargestClassId = NumClasses - 1;
+  static const uptr BatchClassId = 0;
+
+  static uptr getSizeByClassId(uptr ClassId) {
+    DCHECK_NE(ClassId, BatchClassId);
+    if (ClassId <= MidClass)
+      return (ClassId << Config::MinSizeLog) + Config::SizeDelta;
+    ClassId -= MidClass;
+    const uptr T = MidSize << (ClassId >> S);
+    return T + (T >> S) * (ClassId & M) + Config::SizeDelta;
+  }
+
+  static u8 getSizeLSBByClassId(uptr ClassId) {
+    return u8(getLeastSignificantSetBitIndex(getSizeByClassId(ClassId)));
+  }
+
+  static constexpr bool usesCompressedLSBFormat() { return false; }
+
+  static uptr getClassIdBySize(uptr Size) {
+    if (Size <= Config::SizeDelta + (1 << Config::MinSizeLog))
+      return 1;
+    Size -= Config::SizeDelta;
+    DCHECK_LE(Size, MaxSize);
+    if (Size <= MidSize)
+      return (Size + MinSize - 1) >> Config::MinSizeLog;
+    return MidClass + 1 + scaledLog2(Size - 1, Config::MidSizeLog, S);
+  }
+
+  static u32 getMaxCachedHint(uptr Size) {
+    DCHECK_LE(Size, MaxSize);
+    return Base::getMaxCachedHint(Size);
+  }
+};
+
+template <typename Config>
+class TableSizeClassMap : public SizeClassMapBase<Config> {
+  typedef SizeClassMapBase<Config> Base;
+
+  static const u8 S = Config::NumBits - 1;
+  static const uptr M = (1UL << S) - 1;
+  static const uptr ClassesSize =
+      sizeof(Config::Classes) / sizeof(Config::Classes[0]);
+
+  struct SizeTable {
+    constexpr SizeTable() {
+      uptr Pos = 1 << Config::MidSizeLog;
+      uptr Inc = 1 << (Config::MidSizeLog - S);
+      for (uptr i = 0; i != getTableSize(); ++i) {
+        Pos += Inc;
+        if ((Pos & (Pos - 1)) == 0)
+          Inc *= 2;
+        Tab[i] = computeClassId(Pos + Config::SizeDelta);
+      }
+    }
+
+    constexpr static u8 computeClassId(uptr Size) {
+      for (uptr i = 0; i != ClassesSize; ++i) {
+        if (Size <= Config::Classes[i])
+          return static_cast<u8>(i + 1);
+      }
+      return static_cast<u8>(-1);
+    }
+
+    constexpr static uptr getTableSize() {
+      return (Config::MaxSizeLog - Config::MidSizeLog) << S;
+    }
+
+    u8 Tab[getTableSize()] = {};
+  };
+
+  static constexpr SizeTable SzTable = {};
+
+  struct LSBTable {
+    constexpr LSBTable() {
+      u8 Min = 255, Max = 0;
+      for (uptr I = 0; I != ClassesSize; ++I) {
+        for (u8 Bit = 0; Bit != 64; ++Bit) {
+          if (Config::Classes[I] & (1 << Bit)) {
+            Tab[I] = Bit;
+            if (Bit < Min)
+              Min = Bit;
+            if (Bit > Max)
+              Max = Bit;
+            break;
+          }
+        }
+      }
+
+      if (Max - Min > 3 || ClassesSize > 32)
+        return;
+
+      UseCompressedFormat = true;
+      CompressedMin = Min;
+      for (uptr I = 0; I != ClassesSize; ++I)
+        CompressedValue |= u64(Tab[I] - Min) << (I * 2);
+    }
+
+    u8 Tab[ClassesSize] = {};
+
+    bool UseCompressedFormat = false;
+    u8 CompressedMin = 0;
+    u64 CompressedValue = 0;
+  };
+
+  static constexpr LSBTable LTable = {};
+
+public:
+  static const u32 MaxNumCachedHint = Config::MaxNumCachedHint;
+
+  static const uptr NumClasses = ClassesSize + 1;
+  static_assert(NumClasses < 256, "");
+  static const uptr LargestClassId = NumClasses - 1;
+  static const uptr BatchClassId = 0;
+  static const uptr MaxSize = Config::Classes[LargestClassId - 1];
+
+  static uptr getSizeByClassId(uptr ClassId) {
+    return Config::Classes[ClassId - 1];
+  }
+
+  static u8 getSizeLSBByClassId(uptr ClassId) {
+    if (LTable.UseCompressedFormat)
+      return ((LTable.CompressedValue >> ((ClassId - 1) * 2)) & 3) +
+             LTable.CompressedMin;
+    else
+      return LTable.Tab[ClassId - 1];
+  }
+
+  static constexpr bool usesCompressedLSBFormat() {
+    return LTable.UseCompressedFormat;
+  }
+
+  static uptr getClassIdBySize(uptr Size) {
+    if (Size <= Config::Classes[0])
+      return 1;
+    Size -= Config::SizeDelta;
+    DCHECK_LE(Size, MaxSize);
+    if (Size <= (1 << Config::MidSizeLog))
+      return ((Size - 1) >> Config::MinSizeLog) + 1;
+    return SzTable.Tab[scaledLog2(Size - 1, Config::MidSizeLog, S)];
+  }
+
+  static u32 getMaxCachedHint(uptr Size) {
+    DCHECK_LE(Size, MaxSize);
+    return Base::getMaxCachedHint(Size);
+  }
+};
+
+struct DefaultSizeClassConfig {
+  static const uptr NumBits = 3;
+  static const uptr MinSizeLog = 5;
+  static const uptr MidSizeLog = 8;
+  static const uptr MaxSizeLog = 17;
+  static const u32 MaxNumCachedHint = 14;
+  static const uptr MaxBytesCachedLog = 10;
+  static const uptr SizeDelta = 0;
+};
+
+typedef FixedSizeClassMap<DefaultSizeClassConfig> DefaultSizeClassMap;
+
+struct FuchsiaSizeClassConfig {
+  static const uptr NumBits = 3;
+  static const uptr MinSizeLog = 5;
+  static const uptr MidSizeLog = 8;
+  static const uptr MaxSizeLog = 17;
+  static const u32 MaxNumCachedHint = 10;
+  static const uptr MaxBytesCachedLog = 10;
+  static const uptr SizeDelta = Chunk::getHeaderSize();
+};
+
+typedef FixedSizeClassMap<FuchsiaSizeClassConfig> FuchsiaSizeClassMap;
+
+struct AndroidSizeClassConfig {
+#if SCUDO_WORDSIZE == 64U
+  static const uptr NumBits = 7;
+  static const uptr MinSizeLog = 4;
+  static const uptr MidSizeLog = 6;
+  static const uptr MaxSizeLog = 16;
+  static const u32 MaxNumCachedHint = 13;
+  static const uptr MaxBytesCachedLog = 13;
+
+  static constexpr u32 Classes[] = {
+      0x00020, 0x00030, 0x00040, 0x00050, 0x00060, 0x00070, 0x00090, 0x000b0,
+      0x000c0, 0x000e0, 0x00120, 0x00160, 0x001c0, 0x00250, 0x00320, 0x00450,
+      0x00670, 0x00830, 0x00a10, 0x00c30, 0x01010, 0x01210, 0x01bd0, 0x02210,
+      0x02d90, 0x03790, 0x04010, 0x04810, 0x05a10, 0x07310, 0x08210, 0x10010,
+  };
+  static const uptr SizeDelta = 16;
+#else
+  static const uptr NumBits = 8;
+  static const uptr MinSizeLog = 4;
+  static const uptr MidSizeLog = 7;
+  static const uptr MaxSizeLog = 16;
+  static const u32 MaxNumCachedHint = 14;
+  static const uptr MaxBytesCachedLog = 13;
+
+  static constexpr u32 Classes[] = {
+      0x00020, 0x00030, 0x00040, 0x00050, 0x00060, 0x00070, 0x00080, 0x00090,
+      0x000a0, 0x000b0, 0x000c0, 0x000e0, 0x000f0, 0x00110, 0x00120, 0x00130,
+      0x00150, 0x00160, 0x00170, 0x00190, 0x001d0, 0x00210, 0x00240, 0x002a0,
+      0x00330, 0x00370, 0x003a0, 0x00400, 0x00430, 0x004a0, 0x00530, 0x00610,
+      0x00730, 0x00840, 0x00910, 0x009c0, 0x00a60, 0x00b10, 0x00ca0, 0x00e00,
+      0x00fb0, 0x01030, 0x01130, 0x011f0, 0x01490, 0x01650, 0x01930, 0x02010,
+      0x02190, 0x02490, 0x02850, 0x02d50, 0x03010, 0x03210, 0x03c90, 0x04090,
+      0x04510, 0x04810, 0x05c10, 0x06f10, 0x07310, 0x08010, 0x0c010, 0x10010,
+  };
+  static const uptr SizeDelta = 16;
+#endif
+};
+
+typedef TableSizeClassMap<AndroidSizeClassConfig> AndroidSizeClassMap;
+
+#if SCUDO_WORDSIZE == 64U && defined(__clang__)
+static_assert(AndroidSizeClassMap::usesCompressedLSBFormat(), "");
+#endif
+
+struct SvelteSizeClassConfig {
+#if SCUDO_WORDSIZE == 64U
+  static const uptr NumBits = 4;
+  static const uptr MinSizeLog = 4;
+  static const uptr MidSizeLog = 8;
+  static const uptr MaxSizeLog = 14;
+  static const u32 MaxNumCachedHint = 13;
+  static const uptr MaxBytesCachedLog = 10;
+  static const uptr SizeDelta = Chunk::getHeaderSize();
+#else
+  static const uptr NumBits = 4;
+  static const uptr MinSizeLog = 3;
+  static const uptr MidSizeLog = 7;
+  static const uptr MaxSizeLog = 14;
+  static const u32 MaxNumCachedHint = 14;
+  static const uptr MaxBytesCachedLog = 10;
+  static const uptr SizeDelta = Chunk::getHeaderSize();
+#endif
+};
+
+typedef FixedSizeClassMap<SvelteSizeClassConfig> SvelteSizeClassMap;
+
+// Trusty is configured to only have one region containing blocks of size
+// 2^7 bytes.
+struct TrustySizeClassConfig {
+  static const uptr NumBits = 1;
+  static const uptr MinSizeLog = 7;
+  static const uptr MidSizeLog = 7;
+  static const uptr MaxSizeLog = 7;
+  static const u32 MaxNumCachedHint = 8;
+  static const uptr MaxBytesCachedLog = 10;
+  static const uptr SizeDelta = 0;
+};
+
+typedef FixedSizeClassMap<TrustySizeClassConfig> TrustySizeClassMap;
+
+template <typename SCMap> inline void printMap() {
+  ScopedString Buffer;
+  uptr PrevS = 0;
+  uptr TotalCached = 0;
+  for (uptr I = 0; I < SCMap::NumClasses; I++) {
+    if (I == SCMap::BatchClassId)
+      continue;
+    const uptr S = SCMap::getSizeByClassId(I);
+    const uptr D = S - PrevS;
+    const uptr P = PrevS ? (D * 100 / PrevS) : 0;
+    const uptr L = S ? getMostSignificantSetBitIndex(S) : 0;
+    const uptr Cached = SCMap::getMaxCachedHint(S) * S;
+    Buffer.append(
+        "C%02zu => S: %zu diff: +%zu %02zu%% L %zu Cached: %u %zu; id %zu\n", I,
+        S, D, P, L, SCMap::getMaxCachedHint(S), Cached,
+        SCMap::getClassIdBySize(S));
+    TotalCached += Cached;
+    PrevS = S;
+  }
+  Buffer.append("Total Cached: %zu\n", TotalCached);
+  Buffer.output();
+}
+
+template <typename SCMap> static void validateMap() {
+  for (uptr C = 0; C < SCMap::NumClasses; C++) {
+    if (C == SCMap::BatchClassId)
+      continue;
+    const uptr S = SCMap::getSizeByClassId(C);
+    CHECK_NE(S, 0U);
+    CHECK_EQ(SCMap::getClassIdBySize(S), C);
+    if (C < SCMap::LargestClassId)
+      CHECK_EQ(SCMap::getClassIdBySize(S + 1), C + 1);
+    CHECK_EQ(SCMap::getClassIdBySize(S - 1), C);
+    if (C - 1 != SCMap::BatchClassId)
+      CHECK_GT(SCMap::getSizeByClassId(C), SCMap::getSizeByClassId(C - 1));
+  }
+  // Do not perform the loop if the maximum size is too large.
+  if (SCMap::MaxSize > (1 << 19))
+    return;
+  for (uptr S = 1; S <= SCMap::MaxSize; S++) {
+    const uptr C = SCMap::getClassIdBySize(S);
+    CHECK_LT(C, SCMap::NumClasses);
+    CHECK_GE(SCMap::getSizeByClassId(C), S);
+    if (C - 1 != SCMap::BatchClassId)
+      CHECK_LT(SCMap::getSizeByClassId(C - 1), S);
+  }
+}
+} // namespace scudo
+
+#endif // SCUDO_SIZE_CLASS_MAP_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/stack_depot.h b/contrib/libs/clang14-rt/lib/scudo/standalone/stack_depot.h
new file mode 100644
index 0000000000..458198fcb7
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/stack_depot.h
@@ -0,0 +1,144 @@
+//===-- stack_depot.h -------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_STACK_DEPOT_H_
+#define SCUDO_STACK_DEPOT_H_
+
+#include "atomic_helpers.h"
+#include "mutex.h"
+
+namespace scudo {
+
+class MurMur2HashBuilder {
+  static const u32 M = 0x5bd1e995;
+  static const u32 Seed = 0x9747b28c;
+  static const u32 R = 24;
+  u32 H;
+
+public:
+  explicit MurMur2HashBuilder(u32 Init = 0) { H = Seed ^ Init; }
+  void add(u32 K) {
+    K *= M;
+    K ^= K >> R;
+    K *= M;
+    H *= M;
+    H ^= K;
+  }
+  u32 get() {
+    u32 X = H;
+    X ^= X >> 13;
+    X *= M;
+    X ^= X >> 15;
+    return X;
+  }
+};
+
+class StackDepot {
+  HybridMutex RingEndMu;
+  u32 RingEnd = 0;
+
+  // This data structure stores a stack trace for each allocation and
+  // deallocation when stack trace recording is enabled, that may be looked up
+  // using a hash of the stack trace. The lower bits of the hash are an index
+  // into the Tab array, which stores an index into the Ring array where the
+  // stack traces are stored. As the name implies, Ring is a ring buffer, so a
+  // stack trace may wrap around to the start of the array.
+  //
+  // Each stack trace in Ring is prefixed by a stack trace marker consisting of
+  // a fixed 1 bit in bit 0 (this allows disambiguation between stack frames
+  // and stack trace markers in the case where instruction pointers are 4-byte
+  // aligned, as they are on arm64), the stack trace hash in bits 1-32, and the
+  // size of the stack trace in bits 33-63.
+  //
+  // The insert() function is potentially racy in its accesses to the Tab and
+  // Ring arrays, but find() is resilient to races in the sense that, barring
+  // hash collisions, it will either return the correct stack trace or no stack
+  // trace at all, even if two instances of insert() raced with one another.
+  // This is achieved by re-checking the hash of the stack trace before
+  // returning the trace.
+
+#ifdef SCUDO_FUZZ
+  // Use smaller table sizes for fuzzing in order to reduce input size.
+  static const uptr TabBits = 4;
+#else
+  static const uptr TabBits = 16;
+#endif
+  static const uptr TabSize = 1 << TabBits;
+  static const uptr TabMask = TabSize - 1;
+  atomic_u32 Tab[TabSize] = {};
+
+#ifdef SCUDO_FUZZ
+  static const uptr RingBits = 4;
+#else
+  static const uptr RingBits = 19;
+#endif
+  static const uptr RingSize = 1 << RingBits;
+  static const uptr RingMask = RingSize - 1;
+  atomic_u64 Ring[RingSize] = {};
+
+public:
+  // Insert hash of the stack trace [Begin, End) into the stack depot, and
+  // return the hash.
+  u32 insert(uptr *Begin, uptr *End) {
+    MurMur2HashBuilder B;
+    for (uptr *I = Begin; I != End; ++I)
+      B.add(u32(*I) >> 2);
+    u32 Hash = B.get();
+
+    u32 Pos = Hash & TabMask;
+    u32 RingPos = atomic_load_relaxed(&Tab[Pos]);
+    u64 Entry = atomic_load_relaxed(&Ring[RingPos]);
+    u64 Id = (u64(End - Begin) << 33) | (u64(Hash) << 1) | 1;
+    if (Entry == Id)
+      return Hash;
+
+    ScopedLock Lock(RingEndMu);
+    RingPos = RingEnd;
+    atomic_store_relaxed(&Tab[Pos], RingPos);
+    atomic_store_relaxed(&Ring[RingPos], Id);
+    for (uptr *I = Begin; I != End; ++I) {
+      RingPos = (RingPos + 1) & RingMask;
+      atomic_store_relaxed(&Ring[RingPos], *I);
+    }
+    RingEnd = (RingPos + 1) & RingMask;
+    return Hash;
+  }
+
+  // Look up a stack trace by hash. Returns true if successful. The trace may be
+  // accessed via operator[] passing indexes between *RingPosPtr and
+  // *RingPosPtr + *SizePtr.
+  bool find(u32 Hash, uptr *RingPosPtr, uptr *SizePtr) const {
+    u32 Pos = Hash & TabMask;
+    u32 RingPos = atomic_load_relaxed(&Tab[Pos]);
+    if (RingPos >= RingSize)
+      return false;
+    u64 Entry = atomic_load_relaxed(&Ring[RingPos]);
+    u64 HashWithTagBit = (u64(Hash) << 1) | 1;
+    if ((Entry & 0x1ffffffff) != HashWithTagBit)
+      return false;
+    u32 Size = u32(Entry >> 33);
+    if (Size >= RingSize)
+      return false;
+    *RingPosPtr = (RingPos + 1) & RingMask;
+    *SizePtr = Size;
+    MurMur2HashBuilder B;
+    for (uptr I = 0; I != Size; ++I) {
+      RingPos = (RingPos + 1) & RingMask;
+      B.add(u32(atomic_load_relaxed(&Ring[RingPos])) >> 2);
+    }
+    return B.get() == Hash;
+  }
+
+  u64 operator[](uptr RingPos) const {
+    return atomic_load_relaxed(&Ring[RingPos & RingMask]);
+  }
+};
+
+} // namespace scudo
+
+#endif // SCUDO_STACK_DEPOT_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/stats.h b/contrib/libs/clang14-rt/lib/scudo/standalone/stats.h
new file mode 100644
index 0000000000..be5bf2d372
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/stats.h
@@ -0,0 +1,101 @@
+//===-- stats.h -------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_STATS_H_
+#define SCUDO_STATS_H_
+
+#include "atomic_helpers.h"
+#include "list.h"
+#include "mutex.h"
+
+#include <string.h>
+
+namespace scudo {
+
+// Memory allocator statistics
+enum StatType { StatAllocated, StatFree, StatMapped, StatCount };
+
+typedef uptr StatCounters[StatCount];
+
+// Per-thread stats, live in per-thread cache. We use atomics so that the
+// numbers themselves are consistent. But we don't use atomic_{add|sub} or a
+// lock, because those are expensive operations , and we only care for the stats
+// to be "somewhat" correct: eg. if we call GlobalStats::get while a thread is
+// LocalStats::add'ing, this is OK, we will still get a meaningful number.
+class LocalStats {
+public:
+  void init() {
+    for (uptr I = 0; I < StatCount; I++)
+      DCHECK_EQ(get(static_cast<StatType>(I)), 0U);
+  }
+
+  void add(StatType I, uptr V) {
+    V += atomic_load_relaxed(&StatsArray[I]);
+    atomic_store_relaxed(&StatsArray[I], V);
+  }
+
+  void sub(StatType I, uptr V) {
+    V = atomic_load_relaxed(&StatsArray[I]) - V;
+    atomic_store_relaxed(&StatsArray[I], V);
+  }
+
+  void set(StatType I, uptr V) { atomic_store_relaxed(&StatsArray[I], V); }
+
+  uptr get(StatType I) const { return atomic_load_relaxed(&StatsArray[I]); }
+
+  LocalStats *Next = nullptr;
+  LocalStats *Prev = nullptr;
+
+private:
+  atomic_uptr StatsArray[StatCount] = {};
+};
+
+// Global stats, used for aggregation and querying.
+class GlobalStats : public LocalStats {
+public:
+  void init() { LocalStats::init(); }
+
+  void link(LocalStats *S) {
+    ScopedLock L(Mutex);
+    StatsList.push_back(S);
+  }
+
+  void unlink(LocalStats *S) {
+    ScopedLock L(Mutex);
+    StatsList.remove(S);
+    for (uptr I = 0; I < StatCount; I++)
+      add(static_cast<StatType>(I), S->get(static_cast<StatType>(I)));
+  }
+
+  void get(uptr *S) const {
+    ScopedLock L(Mutex);
+    for (uptr I = 0; I < StatCount; I++)
+      S[I] = LocalStats::get(static_cast<StatType>(I));
+    for (const auto &Stats : StatsList) {
+      for (uptr I = 0; I < StatCount; I++)
+        S[I] += Stats.get(static_cast<StatType>(I));
+    }
+    // All stats must be non-negative.
+    for (uptr I = 0; I < StatCount; I++)
+      S[I] = static_cast<sptr>(S[I]) >= 0 ? S[I] : 0;
+  }
+
+  void lock() { Mutex.lock(); }
+  void unlock() { Mutex.unlock(); }
+
+  void disable() { lock(); }
+  void enable() { unlock(); }
+
+private:
+  mutable HybridMutex Mutex;
+  DoublyLinkedList<LocalStats> StatsList;
+};
+
+} // namespace scudo
+
+#endif // SCUDO_STATS_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/string_utils.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/string_utils.cpp
new file mode 100644
index 0000000000..13fdb9c6ca
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/string_utils.cpp
@@ -0,0 +1,255 @@
+//===-- string_utils.cpp ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "string_utils.h"
+#include "common.h"
+
+#include <stdarg.h>
+#include <string.h>
+
+namespace scudo {
+
+static int appendChar(char **Buffer, const char *BufferEnd, char C) {
+  if (*Buffer < BufferEnd) {
+    **Buffer = C;
+    (*Buffer)++;
+  }
+  return 1;
+}
+
+// Appends number in a given Base to buffer. If its length is less than
+// |MinNumberLength|, it is padded with leading zeroes or spaces, depending
+// on the value of |PadWithZero|.
+static int appendNumber(char **Buffer, const char *BufferEnd, u64 AbsoluteValue,
+                        u8 Base, u8 MinNumberLength, bool PadWithZero,
+                        bool Negative, bool Upper) {
+  constexpr uptr MaxLen = 30;
+  RAW_CHECK(Base == 10 || Base == 16);
+  RAW_CHECK(Base == 10 || !Negative);
+  RAW_CHECK(AbsoluteValue || !Negative);
+  RAW_CHECK(MinNumberLength < MaxLen);
+  int Res = 0;
+  if (Negative && MinNumberLength)
+    --MinNumberLength;
+  if (Negative && PadWithZero)
+    Res += appendChar(Buffer, BufferEnd, '-');
+  uptr NumBuffer[MaxLen];
+  int Pos = 0;
+  do {
+    RAW_CHECK_MSG(static_cast<uptr>(Pos) < MaxLen,
+                  "appendNumber buffer overflow");
+    NumBuffer[Pos++] = static_cast<uptr>(AbsoluteValue % Base);
+    AbsoluteValue /= Base;
+  } while (AbsoluteValue > 0);
+  if (Pos < MinNumberLength) {
+    memset(&NumBuffer[Pos], 0,
+           sizeof(NumBuffer[0]) * static_cast<uptr>(MinNumberLength - Pos));
+    Pos = MinNumberLength;
+  }
+  RAW_CHECK(Pos > 0);
+  Pos--;
+  for (; Pos >= 0 && NumBuffer[Pos] == 0; Pos--) {
+    char c = (PadWithZero || Pos == 0) ? '0' : ' ';
+    Res += appendChar(Buffer, BufferEnd, c);
+  }
+  if (Negative && !PadWithZero)
+    Res += appendChar(Buffer, BufferEnd, '-');
+  for (; Pos >= 0; Pos--) {
+    char Digit = static_cast<char>(NumBuffer[Pos]);
+    Digit = static_cast<char>((Digit < 10) ? '0' + Digit
+                                           : (Upper ? 'A' : 'a') + Digit - 10);
+    Res += appendChar(Buffer, BufferEnd, Digit);
+  }
+  return Res;
+}
+
+static int appendUnsigned(char **Buffer, const char *BufferEnd, u64 Num,
+                          u8 Base, u8 MinNumberLength, bool PadWithZero,
+                          bool Upper) {
+  return appendNumber(Buffer, BufferEnd, Num, Base, MinNumberLength,
+                      PadWithZero, /*Negative=*/false, Upper);
+}
+
+static int appendSignedDecimal(char **Buffer, const char *BufferEnd, s64 Num,
+                               u8 MinNumberLength, bool PadWithZero) {
+  const bool Negative = (Num < 0);
+  const u64 UnsignedNum = (Num == INT64_MIN)
+                              ? static_cast<u64>(INT64_MAX) + 1
+                              : static_cast<u64>(Negative ? -Num : Num);
+  return appendNumber(Buffer, BufferEnd, UnsignedNum, 10, MinNumberLength,
+                      PadWithZero, Negative, /*Upper=*/false);
+}
+
+// Use the fact that explicitly requesting 0 Width (%0s) results in UB and
+// interpret Width == 0 as "no Width requested":
+// Width == 0 - no Width requested
+// Width  < 0 - left-justify S within and pad it to -Width chars, if necessary
+// Width  > 0 - right-justify S, not implemented yet
+static int appendString(char **Buffer, const char *BufferEnd, int Width,
+                        int MaxChars, const char *S) {
+  if (!S)
+    S = "<null>";
+  int Res = 0;
+  for (; *S; S++) {
+    if (MaxChars >= 0 && Res >= MaxChars)
+      break;
+    Res += appendChar(Buffer, BufferEnd, *S);
+  }
+  // Only the left justified strings are supported.
+  while (Width < -Res)
+    Res += appendChar(Buffer, BufferEnd, ' ');
+  return Res;
+}
+
+static int appendPointer(char **Buffer, const char *BufferEnd, u64 ptr_value) {
+  int Res = 0;
+  Res += appendString(Buffer, BufferEnd, 0, -1, "0x");
+  Res += appendUnsigned(Buffer, BufferEnd, ptr_value, 16,
+                        SCUDO_POINTER_FORMAT_LENGTH, /*PadWithZero=*/true,
+                        /*Upper=*/false);
+  return Res;
+}
+
+static int formatString(char *Buffer, uptr BufferLength, const char *Format,
+                        va_list Args) {
+  static const char *PrintfFormatsHelp =
+      "Supported formatString formats: %([0-9]*)?(z|ll)?{d,u,x,X}; %p; "
+      "%[-]([0-9]*)?(\\.\\*)?s; %c\n";
+  RAW_CHECK(Format);
+  RAW_CHECK(BufferLength > 0);
+  const char *BufferEnd = &Buffer[BufferLength - 1];
+  const char *Cur = Format;
+  int Res = 0;
+  for (; *Cur; Cur++) {
+    if (*Cur != '%') {
+      Res += appendChar(&Buffer, BufferEnd, *Cur);
+      continue;
+    }
+    Cur++;
+    const bool LeftJustified = *Cur == '-';
+    if (LeftJustified)
+      Cur++;
+    bool HaveWidth = (*Cur >= '0' && *Cur <= '9');
+    const bool PadWithZero = (*Cur == '0');
+    u8 Width = 0;
+    if (HaveWidth) {
+      while (*Cur >= '0' && *Cur <= '9')
+        Width = static_cast<u8>(Width * 10 + *Cur++ - '0');
+    }
+    const bool HavePrecision = (Cur[0] == '.' && Cur[1] == '*');
+    int Precision = -1;
+    if (HavePrecision) {
+      Cur += 2;
+      Precision = va_arg(Args, int);
+    }
+    const bool HaveZ = (*Cur == 'z');
+    Cur += HaveZ;
+    const bool HaveLL = !HaveZ && (Cur[0] == 'l' && Cur[1] == 'l');
+    Cur += HaveLL * 2;
+    s64 DVal;
+    u64 UVal;
+    const bool HaveLength = HaveZ || HaveLL;
+    const bool HaveFlags = HaveWidth || HaveLength;
+    // At the moment only %s supports precision and left-justification.
+    CHECK(!((Precision >= 0 || LeftJustified) && *Cur != 's'));
+    switch (*Cur) {
+    case 'd': {
+      DVal = HaveLL  ? va_arg(Args, s64)
+             : HaveZ ? va_arg(Args, sptr)
+                     : va_arg(Args, int);
+      Res += appendSignedDecimal(&Buffer, BufferEnd, DVal, Width, PadWithZero);
+      break;
+    }
+    case 'u':
+    case 'x':
+    case 'X': {
+      UVal = HaveLL  ? va_arg(Args, u64)
+             : HaveZ ? va_arg(Args, uptr)
+                     : va_arg(Args, unsigned);
+      const bool Upper = (*Cur == 'X');
+      Res += appendUnsigned(&Buffer, BufferEnd, UVal, (*Cur == 'u') ? 10 : 16,
+                            Width, PadWithZero, Upper);
+      break;
+    }
+    case 'p': {
+      RAW_CHECK_MSG(!HaveFlags, PrintfFormatsHelp);
+      Res += appendPointer(&Buffer, BufferEnd, va_arg(Args, uptr));
+      break;
+    }
+    case 's': {
+      RAW_CHECK_MSG(!HaveLength, PrintfFormatsHelp);
+      // Only left-justified Width is supported.
+      CHECK(!HaveWidth || LeftJustified);
+      Res += appendString(&Buffer, BufferEnd, LeftJustified ? -Width : Width,
+                          Precision, va_arg(Args, char *));
+      break;
+    }
+    case 'c': {
+      RAW_CHECK_MSG(!HaveFlags, PrintfFormatsHelp);
+      Res +=
+          appendChar(&Buffer, BufferEnd, static_cast<char>(va_arg(Args, int)));
+      break;
+    }
+    case '%': {
+      RAW_CHECK_MSG(!HaveFlags, PrintfFormatsHelp);
+      Res += appendChar(&Buffer, BufferEnd, '%');
+      break;
+    }
+    default: {
+      RAW_CHECK_MSG(false, PrintfFormatsHelp);
+    }
+    }
+  }
+  RAW_CHECK(Buffer <= BufferEnd);
+  appendChar(&Buffer, BufferEnd + 1, '\0');
+  return Res;
+}
+
+int formatString(char *Buffer, uptr BufferLength, const char *Format, ...) {
+  va_list Args;
+  va_start(Args, Format);
+  int Res = formatString(Buffer, BufferLength, Format, Args);
+  va_end(Args);
+  return Res;
+}
+
+void ScopedString::append(const char *Format, va_list Args) {
+  va_list ArgsCopy;
+  va_copy(ArgsCopy, Args);
+  // formatString doesn't currently support a null buffer or zero buffer length,
+  // so in order to get the resulting formatted string length, we use a one-char
+  // buffer.
+  char C[1];
+  const uptr AdditionalLength =
+      static_cast<uptr>(formatString(C, sizeof(C), Format, Args)) + 1;
+  const uptr Length = length();
+  String.resize(Length + AdditionalLength);
+  const uptr FormattedLength = static_cast<uptr>(formatString(
+      String.data() + Length, String.size() - Length, Format, ArgsCopy));
+  RAW_CHECK(data()[length()] == '\0');
+  RAW_CHECK(FormattedLength + 1 == AdditionalLength);
+  va_end(ArgsCopy);
+}
+
+void ScopedString::append(const char *Format, ...) {
+  va_list Args;
+  va_start(Args, Format);
+  append(Format, Args);
+  va_end(Args);
+}
+
+void Printf(const char *Format, ...) {
+  va_list Args;
+  va_start(Args, Format);
+  ScopedString Msg;
+  Msg.append(Format, Args);
+  outputRaw(Msg.data());
+  va_end(Args);
+}
+
+} // namespace scudo
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/string_utils.h b/contrib/libs/clang14-rt/lib/scudo/standalone/string_utils.h
new file mode 100644
index 0000000000..dd6ff7893b
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/string_utils.h
@@ -0,0 +1,42 @@
+//===-- string_utils.h ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_STRING_UTILS_H_
+#define SCUDO_STRING_UTILS_H_
+
+#include "internal_defs.h"
+#include "vector.h"
+
+#include <stdarg.h>
+
+namespace scudo {
+
+class ScopedString {
+public:
+  explicit ScopedString() { String.push_back('\0'); }
+  uptr length() { return String.size() - 1; }
+  const char *data() { return String.data(); }
+  void clear() {
+    String.clear();
+    String.push_back('\0');
+  }
+  void append(const char *Format, va_list Args);
+  void append(const char *Format, ...) FORMAT(2, 3);
+  void output() const { outputRaw(String.data()); }
+
+private:
+  Vector<char> String;
+};
+
+int formatString(char *Buffer, uptr BufferLength, const char *Format, ...)
+    FORMAT(3, 4);
+void Printf(const char *Format, ...) FORMAT(1, 2);
+
+} // namespace scudo
+
+#endif // SCUDO_STRING_UTILS_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/trusty.h b/contrib/libs/clang14-rt/lib/scudo/standalone/trusty.h
new file mode 100644
index 0000000000..50edd1c6fe
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/trusty.h
@@ -0,0 +1,24 @@
+//===-- trusty.h -----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_TRUSTY_H_
+#define SCUDO_TRUSTY_H_
+
+#include "platform.h"
+
+#if SCUDO_TRUSTY
+
+namespace scudo {
+// MapPlatformData is unused on Trusty, define it as a minimially sized
+// structure.
+struct MapPlatformData {};
+} // namespace scudo
+
+#endif // SCUDO_TRUSTY
+
+#endif // SCUDO_TRUSTY_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/tsd.h b/contrib/libs/clang14-rt/lib/scudo/standalone/tsd.h
new file mode 100644
index 0000000000..b400a3b56d
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/tsd.h
@@ -0,0 +1,66 @@
+//===-- tsd.h ---------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_TSD_H_
+#define SCUDO_TSD_H_
+
+#include "atomic_helpers.h"
+#include "common.h"
+#include "mutex.h"
+
+#include <limits.h> // for PTHREAD_DESTRUCTOR_ITERATIONS
+#include <pthread.h>
+
+// With some build setups, this might still not be defined.
+#ifndef PTHREAD_DESTRUCTOR_ITERATIONS
+#define PTHREAD_DESTRUCTOR_ITERATIONS 4
+#endif
+
+namespace scudo {
+
+template <class Allocator> struct alignas(SCUDO_CACHE_LINE_SIZE) TSD {
+  typename Allocator::CacheT Cache;
+  typename Allocator::QuarantineCacheT QuarantineCache;
+  using ThisT = TSD<Allocator>;
+  u8 DestructorIterations = 0;
+
+  void init(Allocator *Instance) {
+    DCHECK_EQ(DestructorIterations, 0U);
+    DCHECK(isAligned(reinterpret_cast<uptr>(this), alignof(ThisT)));
+    Instance->initCache(&Cache);
+    DestructorIterations = PTHREAD_DESTRUCTOR_ITERATIONS;
+  }
+
+  void commitBack(Allocator *Instance) { Instance->commitBack(this); }
+
+  inline bool tryLock() {
+    if (Mutex.tryLock()) {
+      atomic_store_relaxed(&Precedence, 0);
+      return true;
+    }
+    if (atomic_load_relaxed(&Precedence) == 0)
+      atomic_store_relaxed(
+          &Precedence,
+          static_cast<uptr>(getMonotonicTime() >> FIRST_32_SECOND_64(16, 0)));
+    return false;
+  }
+  inline void lock() {
+    atomic_store_relaxed(&Precedence, 0);
+    Mutex.lock();
+  }
+  inline void unlock() { Mutex.unlock(); }
+  inline uptr getPrecedence() { return atomic_load_relaxed(&Precedence); }
+
+private:
+  HybridMutex Mutex;
+  atomic_uptr Precedence = {};
+};
+
+} // namespace scudo
+
+#endif // SCUDO_TSD_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/tsd_exclusive.h b/contrib/libs/clang14-rt/lib/scudo/standalone/tsd_exclusive.h
new file mode 100644
index 0000000000..bba0c277c6
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/tsd_exclusive.h
@@ -0,0 +1,152 @@
+//===-- tsd_exclusive.h -----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_TSD_EXCLUSIVE_H_
+#define SCUDO_TSD_EXCLUSIVE_H_
+
+#include "tsd.h"
+
+namespace scudo {
+
+struct ThreadState {
+  bool DisableMemInit : 1;
+  enum {
+    NotInitialized = 0,
+    Initialized,
+    TornDown,
+  } InitState : 2;
+};
+
+template <class Allocator> void teardownThread(void *Ptr);
+
+template <class Allocator> struct TSDRegistryExT {
+  void init(Allocator *Instance) {
+    DCHECK(!Initialized);
+    Instance->init();
+    CHECK_EQ(pthread_key_create(&PThreadKey, teardownThread<Allocator>), 0);
+    FallbackTSD.init(Instance);
+    Initialized = true;
+  }
+
+  void initOnceMaybe(Allocator *Instance) {
+    ScopedLock L(Mutex);
+    if (LIKELY(Initialized))
+      return;
+    init(Instance); // Sets Initialized.
+  }
+
+  void unmapTestOnly(Allocator *Instance) {
+    DCHECK(Instance);
+    if (reinterpret_cast<Allocator *>(pthread_getspecific(PThreadKey))) {
+      DCHECK_EQ(reinterpret_cast<Allocator *>(pthread_getspecific(PThreadKey)),
+                Instance);
+      ThreadTSD.commitBack(Instance);
+      ThreadTSD = {};
+    }
+    CHECK_EQ(pthread_key_delete(PThreadKey), 0);
+    PThreadKey = {};
+    FallbackTSD.commitBack(Instance);
+    FallbackTSD = {};
+    State = {};
+    Initialized = false;
+  }
+
+  ALWAYS_INLINE void initThreadMaybe(Allocator *Instance, bool MinimalInit) {
+    if (LIKELY(State.InitState != ThreadState::NotInitialized))
+      return;
+    initThread(Instance, MinimalInit);
+  }
+
+  ALWAYS_INLINE TSD<Allocator> *getTSDAndLock(bool *UnlockRequired) {
+    if (LIKELY(State.InitState == ThreadState::Initialized &&
+               !atomic_load(&Disabled, memory_order_acquire))) {
+      *UnlockRequired = false;
+      return &ThreadTSD;
+    }
+    FallbackTSD.lock();
+    *UnlockRequired = true;
+    return &FallbackTSD;
+  }
+
+  // To disable the exclusive TSD registry, we effectively lock the fallback TSD
+  // and force all threads to attempt to use it instead of their local one.
+  void disable() {
+    Mutex.lock();
+    FallbackTSD.lock();
+    atomic_store(&Disabled, 1U, memory_order_release);
+  }
+
+  void enable() {
+    atomic_store(&Disabled, 0U, memory_order_release);
+    FallbackTSD.unlock();
+    Mutex.unlock();
+  }
+
+  bool setOption(Option O, UNUSED sptr Value) {
+    if (O == Option::ThreadDisableMemInit)
+      State.DisableMemInit = Value;
+    if (O == Option::MaxTSDsCount)
+      return false;
+    return true;
+  }
+
+  bool getDisableMemInit() { return State.DisableMemInit; }
+
+private:
+  // Using minimal initialization allows for global initialization while keeping
+  // the thread specific structure untouched. The fallback structure will be
+  // used instead.
+  NOINLINE void initThread(Allocator *Instance, bool MinimalInit) {
+    initOnceMaybe(Instance);
+    if (UNLIKELY(MinimalInit))
+      return;
+    CHECK_EQ(
+        pthread_setspecific(PThreadKey, reinterpret_cast<void *>(Instance)), 0);
+    ThreadTSD.init(Instance);
+    State.InitState = ThreadState::Initialized;
+    Instance->callPostInitCallback();
+  }
+
+  pthread_key_t PThreadKey = {};
+  bool Initialized = false;
+  atomic_u8 Disabled = {};
+  TSD<Allocator> FallbackTSD;
+  HybridMutex Mutex;
+  static thread_local ThreadState State;
+  static thread_local TSD<Allocator> ThreadTSD;
+
+  friend void teardownThread<Allocator>(void *Ptr);
+};
+
+template <class Allocator>
+thread_local TSD<Allocator> TSDRegistryExT<Allocator>::ThreadTSD;
+template <class Allocator>
+thread_local ThreadState TSDRegistryExT<Allocator>::State;
+
+template <class Allocator> void teardownThread(void *Ptr) {
+  typedef TSDRegistryExT<Allocator> TSDRegistryT;
+  Allocator *Instance = reinterpret_cast<Allocator *>(Ptr);
+  // The glibc POSIX thread-local-storage deallocation routine calls user
+  // provided destructors in a loop of PTHREAD_DESTRUCTOR_ITERATIONS.
+  // We want to be called last since other destructors might call free and the
+  // like, so we wait until PTHREAD_DESTRUCTOR_ITERATIONS before draining the
+  // quarantine and swallowing the cache.
+  if (TSDRegistryT::ThreadTSD.DestructorIterations > 1) {
+    TSDRegistryT::ThreadTSD.DestructorIterations--;
+    // If pthread_setspecific fails, we will go ahead with the teardown.
+    if (LIKELY(pthread_setspecific(Instance->getTSDRegistry()->PThreadKey,
+                                   Ptr) == 0))
+      return;
+  }
+  TSDRegistryT::ThreadTSD.commitBack(Instance);
+  TSDRegistryT::State.InitState = ThreadState::TornDown;
+}
+
+} // namespace scudo
+
+#endif // SCUDO_TSD_EXCLUSIVE_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/tsd_shared.h b/contrib/libs/clang14-rt/lib/scudo/standalone/tsd_shared.h
new file mode 100644
index 0000000000..4b3b1a07c1
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/tsd_shared.h
@@ -0,0 +1,216 @@
+//===-- tsd_shared.h --------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_TSD_SHARED_H_
+#define SCUDO_TSD_SHARED_H_
+
+#include "tsd.h"
+
+#if SCUDO_HAS_PLATFORM_TLS_SLOT
+// This is a platform-provided header that needs to be on the include path when
+// Scudo is compiled. It must declare a function with the prototype:
+//   uintptr_t *getPlatformAllocatorTlsSlot()
+// that returns the address of a thread-local word of storage reserved for
+// Scudo, that must be zero-initialized in newly created threads.
+#error #include "scudo_platform_tls_slot.h"
+#endif
+
+namespace scudo {
+
+template <class Allocator, u32 TSDsArraySize, u32 DefaultTSDCount>
+struct TSDRegistrySharedT {
+  void init(Allocator *Instance) {
+    DCHECK(!Initialized);
+    Instance->init();
+    for (u32 I = 0; I < TSDsArraySize; I++)
+      TSDs[I].init(Instance);
+    const u32 NumberOfCPUs = getNumberOfCPUs();
+    setNumberOfTSDs((NumberOfCPUs == 0) ? DefaultTSDCount
+                                        : Min(NumberOfCPUs, DefaultTSDCount));
+    Initialized = true;
+  }
+
+  void initOnceMaybe(Allocator *Instance) {
+    ScopedLock L(Mutex);
+    if (LIKELY(Initialized))
+      return;
+    init(Instance); // Sets Initialized.
+  }
+
+  void unmapTestOnly(Allocator *Instance) {
+    for (u32 I = 0; I < TSDsArraySize; I++) {
+      TSDs[I].commitBack(Instance);
+      TSDs[I] = {};
+    }
+    setCurrentTSD(nullptr);
+    Initialized = false;
+  }
+
+  ALWAYS_INLINE void initThreadMaybe(Allocator *Instance,
+                                     UNUSED bool MinimalInit) {
+    if (LIKELY(getCurrentTSD()))
+      return;
+    initThread(Instance);
+  }
+
+  ALWAYS_INLINE TSD<Allocator> *getTSDAndLock(bool *UnlockRequired) {
+    TSD<Allocator> *TSD = getCurrentTSD();
+    DCHECK(TSD);
+    *UnlockRequired = true;
+    // Try to lock the currently associated context.
+    if (TSD->tryLock())
+      return TSD;
+    // If that fails, go down the slow path.
+    if (TSDsArraySize == 1U) {
+      // Only 1 TSD, not need to go any further.
+      // The compiler will optimize this one way or the other.
+      TSD->lock();
+      return TSD;
+    }
+    return getTSDAndLockSlow(TSD);
+  }
+
+  void disable() {
+    Mutex.lock();
+    for (u32 I = 0; I < TSDsArraySize; I++)
+      TSDs[I].lock();
+  }
+
+  void enable() {
+    for (s32 I = static_cast<s32>(TSDsArraySize - 1); I >= 0; I--)
+      TSDs[I].unlock();
+    Mutex.unlock();
+  }
+
+  bool setOption(Option O, sptr Value) {
+    if (O == Option::MaxTSDsCount)
+      return setNumberOfTSDs(static_cast<u32>(Value));
+    if (O == Option::ThreadDisableMemInit)
+      setDisableMemInit(Value);
+    // Not supported by the TSD Registry, but not an error either.
+    return true;
+  }
+
+  bool getDisableMemInit() const { return *getTlsPtr() & 1; }
+
+private:
+  ALWAYS_INLINE uptr *getTlsPtr() const {
+#if SCUDO_HAS_PLATFORM_TLS_SLOT
+    return reinterpret_cast<uptr *>(getPlatformAllocatorTlsSlot());
+#else
+    static thread_local uptr ThreadTSD;
+    return &ThreadTSD;
+#endif
+  }
+
+  static_assert(alignof(TSD<Allocator>) >= 2, "");
+
+  ALWAYS_INLINE void setCurrentTSD(TSD<Allocator> *CurrentTSD) {
+    *getTlsPtr() &= 1;
+    *getTlsPtr() |= reinterpret_cast<uptr>(CurrentTSD);
+  }
+
+  ALWAYS_INLINE TSD<Allocator> *getCurrentTSD() {
+    return reinterpret_cast<TSD<Allocator> *>(*getTlsPtr() & ~1ULL);
+  }
+
+  bool setNumberOfTSDs(u32 N) {
+    ScopedLock L(MutexTSDs);
+    if (N < NumberOfTSDs)
+      return false;
+    if (N > TSDsArraySize)
+      N = TSDsArraySize;
+    NumberOfTSDs = N;
+    NumberOfCoPrimes = 0;
+    // Compute all the coprimes of NumberOfTSDs. This will be used to walk the
+    // array of TSDs in a random order. For details, see:
+    // https://lemire.me/blog/2017/09/18/visiting-all-values-in-an-array-exactly-once-in-random-order/
+    for (u32 I = 0; I < N; I++) {
+      u32 A = I + 1;
+      u32 B = N;
+      // Find the GCD between I + 1 and N. If 1, they are coprimes.
+      while (B != 0) {
+        const u32 T = A;
+        A = B;
+        B = T % B;
+      }
+      if (A == 1)
+        CoPrimes[NumberOfCoPrimes++] = I + 1;
+    }
+    return true;
+  }
+
+  void setDisableMemInit(bool B) {
+    *getTlsPtr() &= ~1ULL;
+    *getTlsPtr() |= B;
+  }
+
+  NOINLINE void initThread(Allocator *Instance) {
+    initOnceMaybe(Instance);
+    // Initial context assignment is done in a plain round-robin fashion.
+    const u32 Index = atomic_fetch_add(&CurrentIndex, 1U, memory_order_relaxed);
+    setCurrentTSD(&TSDs[Index % NumberOfTSDs]);
+    Instance->callPostInitCallback();
+  }
+
+  NOINLINE TSD<Allocator> *getTSDAndLockSlow(TSD<Allocator> *CurrentTSD) {
+    // Use the Precedence of the current TSD as our random seed. Since we are
+    // in the slow path, it means that tryLock failed, and as a result it's
+    // very likely that said Precedence is non-zero.
+    const u32 R = static_cast<u32>(CurrentTSD->getPrecedence());
+    u32 N, Inc;
+    {
+      ScopedLock L(MutexTSDs);
+      N = NumberOfTSDs;
+      DCHECK_NE(NumberOfCoPrimes, 0U);
+      Inc = CoPrimes[R % NumberOfCoPrimes];
+    }
+    if (N > 1U) {
+      u32 Index = R % N;
+      uptr LowestPrecedence = UINTPTR_MAX;
+      TSD<Allocator> *CandidateTSD = nullptr;
+      // Go randomly through at most 4 contexts and find a candidate.
+      for (u32 I = 0; I < Min(4U, N); I++) {
+        if (TSDs[Index].tryLock()) {
+          setCurrentTSD(&TSDs[Index]);
+          return &TSDs[Index];
+        }
+        const uptr Precedence = TSDs[Index].getPrecedence();
+        // A 0 precedence here means another thread just locked this TSD.
+        if (Precedence && Precedence < LowestPrecedence) {
+          CandidateTSD = &TSDs[Index];
+          LowestPrecedence = Precedence;
+        }
+        Index += Inc;
+        if (Index >= N)
+          Index -= N;
+      }
+      if (CandidateTSD) {
+        CandidateTSD->lock();
+        setCurrentTSD(CandidateTSD);
+        return CandidateTSD;
+      }
+    }
+    // Last resort, stick with the current one.
+    CurrentTSD->lock();
+    return CurrentTSD;
+  }
+
+  atomic_u32 CurrentIndex = {};
+  u32 NumberOfTSDs = 0;
+  u32 NumberOfCoPrimes = 0;
+  u32 CoPrimes[TSDsArraySize] = {};
+  bool Initialized = false;
+  HybridMutex Mutex;
+  HybridMutex MutexTSDs;
+  TSD<Allocator> TSDs[TSDsArraySize];
+};
+
+} // namespace scudo
+
+#endif // SCUDO_TSD_SHARED_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/vector.h b/contrib/libs/clang14-rt/lib/scudo/standalone/vector.h
new file mode 100644
index 0000000000..eae774b56e
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/vector.h
@@ -0,0 +1,117 @@
+//===-- vector.h ------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_VECTOR_H_
+#define SCUDO_VECTOR_H_
+
+#include "common.h"
+
+#include <string.h>
+
+namespace scudo {
+
+// A low-level vector based on map. May incur a significant memory overhead for
+// small vectors. The current implementation supports only POD types.
+template <typename T> class VectorNoCtor {
+public:
+  constexpr void init(uptr InitialCapacity = 0) {
+    Data = &LocalData[0];
+    CapacityBytes = sizeof(LocalData);
+    if (InitialCapacity > capacity())
+      reserve(InitialCapacity);
+  }
+  void destroy() {
+    if (Data != &LocalData[0])
+      unmap(Data, CapacityBytes);
+  }
+  T &operator[](uptr I) {
+    DCHECK_LT(I, Size);
+    return Data[I];
+  }
+  const T &operator[](uptr I) const {
+    DCHECK_LT(I, Size);
+    return Data[I];
+  }
+  void push_back(const T &Element) {
+    DCHECK_LE(Size, capacity());
+    if (Size == capacity()) {
+      const uptr NewCapacity = roundUpToPowerOfTwo(Size + 1);
+      reallocate(NewCapacity);
+    }
+    memcpy(&Data[Size++], &Element, sizeof(T));
+  }
+  T &back() {
+    DCHECK_GT(Size, 0);
+    return Data[Size - 1];
+  }
+  void pop_back() {
+    DCHECK_GT(Size, 0);
+    Size--;
+  }
+  uptr size() const { return Size; }
+  const T *data() const { return Data; }
+  T *data() { return Data; }
+  constexpr uptr capacity() const { return CapacityBytes / sizeof(T); }
+  void reserve(uptr NewSize) {
+    // Never downsize internal buffer.
+    if (NewSize > capacity())
+      reallocate(NewSize);
+  }
+  void resize(uptr NewSize) {
+    if (NewSize > Size) {
+      reserve(NewSize);
+      memset(&Data[Size], 0, sizeof(T) * (NewSize - Size));
+    }
+    Size = NewSize;
+  }
+
+  void clear() { Size = 0; }
+  bool empty() const { return size() == 0; }
+
+  const T *begin() const { return data(); }
+  T *begin() { return data(); }
+  const T *end() const { return data() + size(); }
+  T *end() { return data() + size(); }
+
+private:
+  void reallocate(uptr NewCapacity) {
+    DCHECK_GT(NewCapacity, 0);
+    DCHECK_LE(Size, NewCapacity);
+    NewCapacity = roundUpTo(NewCapacity * sizeof(T), getPageSizeCached());
+    T *NewData =
+        reinterpret_cast<T *>(map(nullptr, NewCapacity, "scudo:vector"));
+    memcpy(NewData, Data, Size * sizeof(T));
+    destroy();
+    Data = NewData;
+    CapacityBytes = NewCapacity;
+  }
+
+  T *Data = nullptr;
+  T LocalData[256 / sizeof(T)] = {};
+  uptr CapacityBytes = 0;
+  uptr Size = 0;
+};
+
+template <typename T> class Vector : public VectorNoCtor<T> {
+public:
+  constexpr Vector() { VectorNoCtor<T>::init(); }
+  explicit Vector(uptr Count) {
+    VectorNoCtor<T>::init(Count);
+    this->resize(Count);
+  }
+  ~Vector() { VectorNoCtor<T>::destroy(); }
+  // Disallow copies and moves.
+  Vector(const Vector &) = delete;
+  Vector &operator=(const Vector &) = delete;
+  Vector(Vector &&) = delete;
+  Vector &operator=(Vector &&) = delete;
+};
+
+} // namespace scudo
+
+#endif // SCUDO_VECTOR_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c.cpp
new file mode 100644
index 0000000000..81c7dd60ee
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c.cpp
@@ -0,0 +1,39 @@
+//===-- wrappers_c.cpp ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "platform.h"
+
+// Skip this compilation unit if compiled as part of Bionic.
+#if !SCUDO_ANDROID || !_BIONIC
+
+#include "allocator_config.h"
+#include "wrappers_c.h"
+#include "wrappers_c_checks.h"
+
+#include <stdint.h>
+#include <stdio.h>
+
+#define SCUDO_PREFIX(name) name
+#define SCUDO_ALLOCATOR Allocator
+
+extern "C" void SCUDO_PREFIX(malloc_postinit)();
+
+// Export the static allocator so that the C++ wrappers can access it.
+// Technically we could have a completely separated heap for C & C++ but in
+// reality the amount of cross pollination between the two is staggering.
+SCUDO_REQUIRE_CONSTANT_INITIALIZATION
+scudo::Allocator<scudo::Config, SCUDO_PREFIX(malloc_postinit)> SCUDO_ALLOCATOR;
+
+#include "wrappers_c.inc"
+
+#undef SCUDO_ALLOCATOR
+#undef SCUDO_PREFIX
+
+extern "C" INTERFACE void __scudo_print_stats(void) { Allocator.printStats(); }
+
+#endif // !SCUDO_ANDROID || !_BIONIC
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c.h b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c.h
new file mode 100644
index 0000000000..5f7f51f3ce
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c.h
@@ -0,0 +1,57 @@
+//===-- wrappers_c.h --------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_WRAPPERS_C_H_
+#define SCUDO_WRAPPERS_C_H_
+
+#include "platform.h"
+#include "stats.h"
+
+// Bionic's struct mallinfo consists of size_t (mallinfo(3) uses int).
+#if SCUDO_ANDROID
+typedef size_t __scudo_mallinfo_data_t;
+#else
+typedef int __scudo_mallinfo_data_t;
+#endif
+
+struct __scudo_mallinfo {
+  __scudo_mallinfo_data_t arena;
+  __scudo_mallinfo_data_t ordblks;
+  __scudo_mallinfo_data_t smblks;
+  __scudo_mallinfo_data_t hblks;
+  __scudo_mallinfo_data_t hblkhd;
+  __scudo_mallinfo_data_t usmblks;
+  __scudo_mallinfo_data_t fsmblks;
+  __scudo_mallinfo_data_t uordblks;
+  __scudo_mallinfo_data_t fordblks;
+  __scudo_mallinfo_data_t keepcost;
+};
+
+struct __scudo_mallinfo2 {
+  size_t arena;
+  size_t ordblks;
+  size_t smblks;
+  size_t hblks;
+  size_t hblkhd;
+  size_t usmblks;
+  size_t fsmblks;
+  size_t uordblks;
+  size_t fordblks;
+  size_t keepcost;
+};
+
+// Android sometimes includes malloc.h no matter what, which yields to
+// conflicting return types for mallinfo() if we use our own structure. So if
+// struct mallinfo is declared (#define courtesy of malloc.h), use it directly.
+#if STRUCT_MALLINFO_DECLARED
+#define SCUDO_MALLINFO mallinfo
+#else
+#define SCUDO_MALLINFO __scudo_mallinfo
+#endif
+
+#endif // SCUDO_WRAPPERS_C_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c.inc b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c.inc
new file mode 100644
index 0000000000..bbe3617dd0
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c.inc
@@ -0,0 +1,288 @@
+//===-- wrappers_c.inc ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_PREFIX
+#error "Define SCUDO_PREFIX prior to including this file!"
+#endif
+
+// malloc-type functions have to be aligned to std::max_align_t. This is
+// distinct from (1U << SCUDO_MIN_ALIGNMENT_LOG), since C++ new-type functions
+// do not have to abide by the same requirement.
+#ifndef SCUDO_MALLOC_ALIGNMENT
+#define SCUDO_MALLOC_ALIGNMENT FIRST_32_SECOND_64(8U, 16U)
+#endif
+
+extern "C" {
+
+INTERFACE WEAK void *SCUDO_PREFIX(calloc)(size_t nmemb, size_t size) {
+  scudo::uptr Product;
+  if (UNLIKELY(scudo::checkForCallocOverflow(size, nmemb, &Product))) {
+    if (SCUDO_ALLOCATOR.canReturnNull()) {
+      errno = ENOMEM;
+      return nullptr;
+    }
+    scudo::reportCallocOverflow(nmemb, size);
+  }
+  return scudo::setErrnoOnNull(SCUDO_ALLOCATOR.allocate(
+      Product, scudo::Chunk::Origin::Malloc, SCUDO_MALLOC_ALIGNMENT, true));
+}
+
+INTERFACE WEAK void SCUDO_PREFIX(free)(void *ptr) {
+  SCUDO_ALLOCATOR.deallocate(ptr, scudo::Chunk::Origin::Malloc);
+}
+
+INTERFACE WEAK struct SCUDO_MALLINFO SCUDO_PREFIX(mallinfo)(void) {
+  struct SCUDO_MALLINFO Info = {};
+  scudo::StatCounters Stats;
+  SCUDO_ALLOCATOR.getStats(Stats);
+  // Space allocated in mmapped regions (bytes)
+  Info.hblkhd = static_cast<__scudo_mallinfo_data_t>(Stats[scudo::StatMapped]);
+  // Maximum total allocated space (bytes)
+  Info.usmblks = Info.hblkhd;
+  // Space in freed fastbin blocks (bytes)
+  Info.fsmblks = static_cast<__scudo_mallinfo_data_t>(Stats[scudo::StatFree]);
+  // Total allocated space (bytes)
+  Info.uordblks =
+      static_cast<__scudo_mallinfo_data_t>(Stats[scudo::StatAllocated]);
+  // Total free space (bytes)
+  Info.fordblks = Info.fsmblks;
+  return Info;
+}
+
+INTERFACE WEAK struct __scudo_mallinfo2 SCUDO_PREFIX(mallinfo2)(void) {
+  struct __scudo_mallinfo2 Info = {};
+  scudo::StatCounters Stats;
+  SCUDO_ALLOCATOR.getStats(Stats);
+  // Space allocated in mmapped regions (bytes)
+  Info.hblkhd = Stats[scudo::StatMapped];
+  // Maximum total allocated space (bytes)
+  Info.usmblks = Info.hblkhd;
+  // Space in freed fastbin blocks (bytes)
+  Info.fsmblks = Stats[scudo::StatFree];
+  // Total allocated space (bytes)
+  Info.uordblks = Stats[scudo::StatAllocated];
+  // Total free space (bytes)
+  Info.fordblks = Info.fsmblks;
+  return Info;
+}
+
+INTERFACE WEAK void *SCUDO_PREFIX(malloc)(size_t size) {
+  return scudo::setErrnoOnNull(SCUDO_ALLOCATOR.allocate(
+      size, scudo::Chunk::Origin::Malloc, SCUDO_MALLOC_ALIGNMENT));
+}
+
+#if SCUDO_ANDROID
+INTERFACE WEAK size_t SCUDO_PREFIX(malloc_usable_size)(const void *ptr) {
+#else
+INTERFACE WEAK size_t SCUDO_PREFIX(malloc_usable_size)(void *ptr) {
+#endif
+  return SCUDO_ALLOCATOR.getUsableSize(ptr);
+}
+
+INTERFACE WEAK void *SCUDO_PREFIX(memalign)(size_t alignment, size_t size) {
+  // Android rounds up the alignment to a power of two if it isn't one.
+  if (SCUDO_ANDROID) {
+    if (UNLIKELY(!alignment)) {
+      alignment = 1U;
+    } else {
+      if (UNLIKELY(!scudo::isPowerOfTwo(alignment)))
+        alignment = scudo::roundUpToPowerOfTwo(alignment);
+    }
+  } else {
+    if (UNLIKELY(!scudo::isPowerOfTwo(alignment))) {
+      if (SCUDO_ALLOCATOR.canReturnNull()) {
+        errno = EINVAL;
+        return nullptr;
+      }
+      scudo::reportAlignmentNotPowerOfTwo(alignment);
+    }
+  }
+  return SCUDO_ALLOCATOR.allocate(size, scudo::Chunk::Origin::Memalign,
+                                  alignment);
+}
+
+INTERFACE WEAK int SCUDO_PREFIX(posix_memalign)(void **memptr, size_t alignment,
+                                                size_t size) {
+  if (UNLIKELY(scudo::checkPosixMemalignAlignment(alignment))) {
+    if (!SCUDO_ALLOCATOR.canReturnNull())
+      scudo::reportInvalidPosixMemalignAlignment(alignment);
+    return EINVAL;
+  }
+  void *Ptr =
+      SCUDO_ALLOCATOR.allocate(size, scudo::Chunk::Origin::Memalign, alignment);
+  if (UNLIKELY(!Ptr))
+    return ENOMEM;
+  *memptr = Ptr;
+  return 0;
+}
+
+INTERFACE WEAK void *SCUDO_PREFIX(pvalloc)(size_t size) {
+  const scudo::uptr PageSize = scudo::getPageSizeCached();
+  if (UNLIKELY(scudo::checkForPvallocOverflow(size, PageSize))) {
+    if (SCUDO_ALLOCATOR.canReturnNull()) {
+      errno = ENOMEM;
+      return nullptr;
+    }
+    scudo::reportPvallocOverflow(size);
+  }
+  // pvalloc(0) should allocate one page.
+  return scudo::setErrnoOnNull(SCUDO_ALLOCATOR.allocate(
+      size ? scudo::roundUpTo(size, PageSize) : PageSize,
+      scudo::Chunk::Origin::Memalign, PageSize));
+}
+
+INTERFACE WEAK void *SCUDO_PREFIX(realloc)(void *ptr, size_t size) {
+  if (!ptr)
+    return scudo::setErrnoOnNull(SCUDO_ALLOCATOR.allocate(
+        size, scudo::Chunk::Origin::Malloc, SCUDO_MALLOC_ALIGNMENT));
+  if (size == 0) {
+    SCUDO_ALLOCATOR.deallocate(ptr, scudo::Chunk::Origin::Malloc);
+    return nullptr;
+  }
+  return scudo::setErrnoOnNull(
+      SCUDO_ALLOCATOR.reallocate(ptr, size, SCUDO_MALLOC_ALIGNMENT));
+}
+
+INTERFACE WEAK void *SCUDO_PREFIX(valloc)(size_t size) {
+  return scudo::setErrnoOnNull(SCUDO_ALLOCATOR.allocate(
+      size, scudo::Chunk::Origin::Memalign, scudo::getPageSizeCached()));
+}
+
+INTERFACE WEAK int SCUDO_PREFIX(malloc_iterate)(
+    uintptr_t base, size_t size,
+    void (*callback)(uintptr_t base, size_t size, void *arg), void *arg) {
+  SCUDO_ALLOCATOR.iterateOverChunks(base, size, callback, arg);
+  return 0;
+}
+
+INTERFACE WEAK void SCUDO_PREFIX(malloc_enable)() { SCUDO_ALLOCATOR.enable(); }
+
+INTERFACE WEAK void SCUDO_PREFIX(malloc_disable)() {
+  SCUDO_ALLOCATOR.disable();
+}
+
+void SCUDO_PREFIX(malloc_postinit)() {
+  SCUDO_ALLOCATOR.initGwpAsan();
+  pthread_atfork(SCUDO_PREFIX(malloc_disable), SCUDO_PREFIX(malloc_enable),
+                 SCUDO_PREFIX(malloc_enable));
+}
+
+INTERFACE WEAK int SCUDO_PREFIX(mallopt)(int param, int value) {
+  if (param == M_DECAY_TIME) {
+    if (SCUDO_ANDROID) {
+      if (value == 0) {
+        // Will set the release values to their minimum values.
+        value = INT32_MIN;
+      } else {
+        // Will set the release values to their maximum values.
+        value = INT32_MAX;
+      }
+    }
+
+    SCUDO_ALLOCATOR.setOption(scudo::Option::ReleaseInterval,
+                              static_cast<scudo::sptr>(value));
+    return 1;
+  } else if (param == M_PURGE) {
+    SCUDO_ALLOCATOR.releaseToOS();
+    return 1;
+  } else {
+    scudo::Option option;
+    switch (param) {
+    case M_MEMTAG_TUNING:
+      option = scudo::Option::MemtagTuning;
+      break;
+    case M_THREAD_DISABLE_MEM_INIT:
+      option = scudo::Option::ThreadDisableMemInit;
+      break;
+    case M_CACHE_COUNT_MAX:
+      option = scudo::Option::MaxCacheEntriesCount;
+      break;
+    case M_CACHE_SIZE_MAX:
+      option = scudo::Option::MaxCacheEntrySize;
+      break;
+    case M_TSDS_COUNT_MAX:
+      option = scudo::Option::MaxTSDsCount;
+      break;
+    default:
+      return 0;
+    }
+    return SCUDO_ALLOCATOR.setOption(option, static_cast<scudo::sptr>(value));
+  }
+}
+
+INTERFACE WEAK void *SCUDO_PREFIX(aligned_alloc)(size_t alignment,
+                                                 size_t size) {
+  if (UNLIKELY(scudo::checkAlignedAllocAlignmentAndSize(alignment, size))) {
+    if (SCUDO_ALLOCATOR.canReturnNull()) {
+      errno = EINVAL;
+      return nullptr;
+    }
+    scudo::reportInvalidAlignedAllocAlignment(alignment, size);
+  }
+  return scudo::setErrnoOnNull(
+      SCUDO_ALLOCATOR.allocate(size, scudo::Chunk::Origin::Malloc, alignment));
+}
+
+INTERFACE WEAK int SCUDO_PREFIX(malloc_info)(UNUSED int options, FILE *stream) {
+  const scudo::uptr max_size =
+      decltype(SCUDO_ALLOCATOR)::PrimaryT::SizeClassMap::MaxSize;
+  auto *sizes = static_cast<scudo::uptr *>(
+      SCUDO_PREFIX(calloc)(max_size, sizeof(scudo::uptr)));
+  auto callback = [](uintptr_t, size_t size, void *arg) {
+    auto *sizes = reinterpret_cast<scudo::uptr *>(arg);
+    if (size < max_size)
+      sizes[size]++;
+  };
+  SCUDO_ALLOCATOR.iterateOverChunks(0, -1ul, callback, sizes);
+
+  fputs("<malloc version=\"scudo-1\">\n", stream);
+  for (scudo::uptr i = 0; i != max_size; ++i)
+    if (sizes[i])
+      fprintf(stream, "<alloc size=\"%zu\" count=\"%zu\"/>\n", i, sizes[i]);
+  fputs("</malloc>\n", stream);
+  SCUDO_PREFIX(free)(sizes);
+  return 0;
+}
+
+// Disable memory tagging for the heap. The caller must disable memory tag
+// checks globally (e.g. by clearing TCF0 on aarch64) before calling this
+// function, and may not re-enable them after calling the function.
+INTERFACE WEAK void SCUDO_PREFIX(malloc_disable_memory_tagging)() {
+  SCUDO_ALLOCATOR.disableMemoryTagging();
+}
+
+// Sets whether scudo records stack traces and other metadata for allocations
+// and deallocations. This function only has an effect if the allocator and
+// hardware support memory tagging.
+INTERFACE WEAK void
+SCUDO_PREFIX(malloc_set_track_allocation_stacks)(int track) {
+  SCUDO_ALLOCATOR.setTrackAllocationStacks(track);
+}
+
+// Sets whether scudo zero-initializes all allocated memory.
+INTERFACE WEAK void SCUDO_PREFIX(malloc_set_zero_contents)(int zero_contents) {
+  SCUDO_ALLOCATOR.setFillContents(zero_contents ? scudo::ZeroFill
+                                                : scudo::NoFill);
+}
+
+// Sets whether scudo pattern-initializes all allocated memory.
+INTERFACE WEAK void
+SCUDO_PREFIX(malloc_set_pattern_fill_contents)(int pattern_fill_contents) {
+  SCUDO_ALLOCATOR.setFillContents(
+      pattern_fill_contents ? scudo::PatternOrZeroFill : scudo::NoFill);
+}
+
+// Sets whether scudo adds a small amount of slack at the end of large
+// allocations, before the guard page. This can be enabled to work around buggy
+// applications that read a few bytes past the end of their allocation.
+INTERFACE WEAK void
+SCUDO_PREFIX(malloc_set_add_large_allocation_slack)(int add_slack) {
+  SCUDO_ALLOCATOR.setAddLargeAllocationSlack(add_slack);
+}
+
+} // extern "C"
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c_checks.h b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c_checks.h
new file mode 100644
index 0000000000..ec9c1a104e
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_c_checks.h
@@ -0,0 +1,69 @@
+//===-- wrappers_c_checks.h -------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_CHECKS_H_
+#define SCUDO_CHECKS_H_
+
+#include "common.h"
+
+#include <errno.h>
+
+#ifndef __has_builtin
+#define __has_builtin(X) 0
+#endif
+
+namespace scudo {
+
+// A common errno setting logic shared by almost all Scudo C wrappers.
+inline void *setErrnoOnNull(void *Ptr) {
+  if (UNLIKELY(!Ptr))
+    errno = ENOMEM;
+  return Ptr;
+}
+
+// Checks return true on failure.
+
+// Checks aligned_alloc() parameters, verifies that the alignment is a power of
+// two and that the size is a multiple of alignment.
+inline bool checkAlignedAllocAlignmentAndSize(uptr Alignment, uptr Size) {
+  return Alignment == 0 || !isPowerOfTwo(Alignment) ||
+         !isAligned(Size, Alignment);
+}
+
+// Checks posix_memalign() parameters, verifies that alignment is a power of two
+// and a multiple of sizeof(void *).
+inline bool checkPosixMemalignAlignment(uptr Alignment) {
+  return Alignment == 0 || !isPowerOfTwo(Alignment) ||
+         !isAligned(Alignment, sizeof(void *));
+}
+
+// Returns true if calloc(Size, N) overflows on Size*N calculation. Use a
+// builtin supported by recent clang & GCC if it exists, otherwise fallback to a
+// costly division.
+inline bool checkForCallocOverflow(uptr Size, uptr N, uptr *Product) {
+#if __has_builtin(__builtin_umull_overflow) && (SCUDO_WORDSIZE == 64U)
+  return __builtin_umull_overflow(Size, N, Product);
+#elif __has_builtin(__builtin_umul_overflow) && (SCUDO_WORDSIZE == 32U)
+  return __builtin_umul_overflow(Size, N, Product);
+#else
+  *Product = Size * N;
+  if (!Size)
+    return false;
+  return (*Product / Size) != N;
+#endif
+}
+
+// Returns true if the size passed to pvalloc overflows when rounded to the next
+// multiple of PageSize.
+inline bool checkForPvallocOverflow(uptr Size, uptr PageSize) {
+  return roundUpTo(Size, PageSize) < Size;
+}
+
+} // namespace scudo
+
+#endif // SCUDO_CHECKS_H_
diff --git a/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_cpp.cpp b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_cpp.cpp
new file mode 100644
index 0000000000..adb1041181
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/standalone/wrappers_cpp.cpp
@@ -0,0 +1,108 @@
+//===-- wrappers_cpp.cpp ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "platform.h"
+
+// Skip this compilation unit if compiled as part of Bionic.
+#if !SCUDO_ANDROID || !_BIONIC
+
+#include "allocator_config.h"
+
+#include <stdint.h>
+
+extern "C" void malloc_postinit();
+extern HIDDEN scudo::Allocator<scudo::Config, malloc_postinit> Allocator;
+
+namespace std {
+struct nothrow_t {};
+enum class align_val_t : size_t {};
+} // namespace std
+
+INTERFACE WEAK void *operator new(size_t size) {
+  return Allocator.allocate(size, scudo::Chunk::Origin::New);
+}
+INTERFACE WEAK void *operator new[](size_t size) {
+  return Allocator.allocate(size, scudo::Chunk::Origin::NewArray);
+}
+INTERFACE WEAK void *operator new(size_t size,
+                                  std::nothrow_t const &) NOEXCEPT {
+  return Allocator.allocate(size, scudo::Chunk::Origin::New);
+}
+INTERFACE WEAK void *operator new[](size_t size,
+                                    std::nothrow_t const &) NOEXCEPT {
+  return Allocator.allocate(size, scudo::Chunk::Origin::NewArray);
+}
+INTERFACE WEAK void *operator new(size_t size, std::align_val_t align) {
+  return Allocator.allocate(size, scudo::Chunk::Origin::New,
+                            static_cast<scudo::uptr>(align));
+}
+INTERFACE WEAK void *operator new[](size_t size, std::align_val_t align) {
+  return Allocator.allocate(size, scudo::Chunk::Origin::NewArray,
+                            static_cast<scudo::uptr>(align));
+}
+INTERFACE WEAK void *operator new(size_t size, std::align_val_t align,
+                                  std::nothrow_t const &) NOEXCEPT {
+  return Allocator.allocate(size, scudo::Chunk::Origin::New,
+                            static_cast<scudo::uptr>(align));
+}
+INTERFACE WEAK void *operator new[](size_t size, std::align_val_t align,
+                                    std::nothrow_t const &) NOEXCEPT {
+  return Allocator.allocate(size, scudo::Chunk::Origin::NewArray,
+                            static_cast<scudo::uptr>(align));
+}
+
+INTERFACE WEAK void operator delete(void *ptr)NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::New);
+}
+INTERFACE WEAK void operator delete[](void *ptr) NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::NewArray);
+}
+INTERFACE WEAK void operator delete(void *ptr, std::nothrow_t const &)NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::New);
+}
+INTERFACE WEAK void operator delete[](void *ptr,
+                                      std::nothrow_t const &) NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::NewArray);
+}
+INTERFACE WEAK void operator delete(void *ptr, size_t size)NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::New, size);
+}
+INTERFACE WEAK void operator delete[](void *ptr, size_t size) NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::NewArray, size);
+}
+INTERFACE WEAK void operator delete(void *ptr, std::align_val_t align)NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::New, 0,
+                       static_cast<scudo::uptr>(align));
+}
+INTERFACE WEAK void operator delete[](void *ptr,
+                                      std::align_val_t align) NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::NewArray, 0,
+                       static_cast<scudo::uptr>(align));
+}
+INTERFACE WEAK void operator delete(void *ptr, std::align_val_t align,
+                                    std::nothrow_t const &)NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::New, 0,
+                       static_cast<scudo::uptr>(align));
+}
+INTERFACE WEAK void operator delete[](void *ptr, std::align_val_t align,
+                                      std::nothrow_t const &) NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::NewArray, 0,
+                       static_cast<scudo::uptr>(align));
+}
+INTERFACE WEAK void operator delete(void *ptr, size_t size,
+                                    std::align_val_t align)NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::New, size,
+                       static_cast<scudo::uptr>(align));
+}
+INTERFACE WEAK void operator delete[](void *ptr, size_t size,
+                                      std::align_val_t align) NOEXCEPT {
+  Allocator.deallocate(ptr, scudo::Chunk::Origin::NewArray, size,
+                       static_cast<scudo::uptr>(align));
+}
+
+#endif // !SCUDO_ANDROID || !_BIONIC
diff --git a/contrib/libs/clang14-rt/lib/scudo/ya.make b/contrib/libs/clang14-rt/lib/scudo/ya.make
new file mode 100644
index 0000000000..8e03ffd48d
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/scudo/ya.make
@@ -0,0 +1,147 @@
+# Generated by devtools/yamaker.
+
+INCLUDE(${ARCADIA_ROOT}/build/platform/clang/arch.cmake)
+
+LIBRARY(clang_rt.scudo${CLANG_RT_SUFFIX})
+
+LICENSE(
+    Apache-2.0 AND
+    Apache-2.0 WITH LLVM-exception AND
+    MIT AND
+    NCSA
+)
+
+LICENSE_TEXTS(.yandex_meta/licenses.list.txt)
+
+OWNER(g:cpp-contrib)
+
+ADDINCL(
+    contrib/libs/clang14-rt/lib
+)
+
+NO_COMPILER_WARNINGS()
+
+NO_UTIL()
+
+NO_SANITIZE()
+
+CFLAGS(
+    -DGWP_ASAN_HOOKS
+    -DHAVE_RPC_XDR_H=0
+    -DUBSAN_CAN_USE_CXXABI
+    -fbuiltin
+    -fcommon
+    -fno-builtin
+    -fno-exceptions
+    -fno-lto
+    -fno-omit-frame-pointer
+    -fno-rtti
+    -fno-stack-protector
+    -fomit-frame-pointer
+    -funwind-tables
+    -fvisibility=hidden
+)
+
+SRCDIR(contrib/libs/clang14-rt/lib)
+
+SRCS(
+    gwp_asan/common.cpp
+    gwp_asan/crash_handler.cpp
+    gwp_asan/guarded_pool_allocator.cpp
+    gwp_asan/optional/backtrace_linux_libc.cpp
+    gwp_asan/optional/options_parser.cpp
+    gwp_asan/optional/segv_handler_posix.cpp
+    gwp_asan/platform_specific/common_posix.cpp
+    gwp_asan/platform_specific/guarded_pool_allocator_posix.cpp
+    gwp_asan/platform_specific/mutex_posix.cpp
+    gwp_asan/platform_specific/utilities_posix.cpp
+    gwp_asan/stack_trace_compressor.cpp
+    interception/interception_linux.cpp
+    interception/interception_mac.cpp
+    interception/interception_type_test.cpp
+    interception/interception_win.cpp
+    sanitizer_common/sancov_flags.cpp
+    sanitizer_common/sanitizer_allocator.cpp
+    sanitizer_common/sanitizer_allocator_checks.cpp
+    sanitizer_common/sanitizer_allocator_report.cpp
+    sanitizer_common/sanitizer_chained_origin_depot.cpp
+    sanitizer_common/sanitizer_common.cpp
+    sanitizer_common/sanitizer_common_libcdep.cpp
+    sanitizer_common/sanitizer_coverage_fuchsia.cpp
+    sanitizer_common/sanitizer_coverage_libcdep_new.cpp
+    sanitizer_common/sanitizer_coverage_win_sections.cpp
+    sanitizer_common/sanitizer_deadlock_detector1.cpp
+    sanitizer_common/sanitizer_deadlock_detector2.cpp
+    sanitizer_common/sanitizer_errno.cpp
+    sanitizer_common/sanitizer_file.cpp
+    sanitizer_common/sanitizer_flag_parser.cpp
+    sanitizer_common/sanitizer_flags.cpp
+    sanitizer_common/sanitizer_fuchsia.cpp
+    sanitizer_common/sanitizer_libc.cpp
+    sanitizer_common/sanitizer_libignore.cpp
+    sanitizer_common/sanitizer_linux.cpp
+    sanitizer_common/sanitizer_linux_libcdep.cpp
+    sanitizer_common/sanitizer_linux_s390.cpp
+    sanitizer_common/sanitizer_mac.cpp
+    sanitizer_common/sanitizer_mac_libcdep.cpp
+    sanitizer_common/sanitizer_mutex.cpp
+    sanitizer_common/sanitizer_netbsd.cpp
+    sanitizer_common/sanitizer_platform_limits_freebsd.cpp
+    sanitizer_common/sanitizer_platform_limits_linux.cpp
+    sanitizer_common/sanitizer_platform_limits_netbsd.cpp
+    sanitizer_common/sanitizer_platform_limits_posix.cpp
+    sanitizer_common/sanitizer_platform_limits_solaris.cpp
+    sanitizer_common/sanitizer_posix.cpp
+    sanitizer_common/sanitizer_posix_libcdep.cpp
+    sanitizer_common/sanitizer_printf.cpp
+    sanitizer_common/sanitizer_procmaps_bsd.cpp
+    sanitizer_common/sanitizer_procmaps_common.cpp
+    sanitizer_common/sanitizer_procmaps_fuchsia.cpp
+    sanitizer_common/sanitizer_procmaps_linux.cpp
+    sanitizer_common/sanitizer_procmaps_mac.cpp
+    sanitizer_common/sanitizer_procmaps_solaris.cpp
+    sanitizer_common/sanitizer_solaris.cpp
+    sanitizer_common/sanitizer_stack_store.cpp
+    sanitizer_common/sanitizer_stackdepot.cpp
+    sanitizer_common/sanitizer_stacktrace.cpp
+    sanitizer_common/sanitizer_stacktrace_libcdep.cpp
+    sanitizer_common/sanitizer_stacktrace_printer.cpp
+    sanitizer_common/sanitizer_stacktrace_sparc.cpp
+    sanitizer_common/sanitizer_stoptheworld_fuchsia.cpp
+    sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
+    sanitizer_common/sanitizer_stoptheworld_mac.cpp
+    sanitizer_common/sanitizer_stoptheworld_netbsd_libcdep.cpp
+    sanitizer_common/sanitizer_stoptheworld_win.cpp
+    sanitizer_common/sanitizer_suppressions.cpp
+    sanitizer_common/sanitizer_symbolizer.cpp
+    sanitizer_common/sanitizer_symbolizer_libbacktrace.cpp
+    sanitizer_common/sanitizer_symbolizer_libcdep.cpp
+    sanitizer_common/sanitizer_symbolizer_mac.cpp
+    sanitizer_common/sanitizer_symbolizer_markup.cpp
+    sanitizer_common/sanitizer_symbolizer_posix_libcdep.cpp
+    sanitizer_common/sanitizer_symbolizer_report.cpp
+    sanitizer_common/sanitizer_symbolizer_win.cpp
+    sanitizer_common/sanitizer_thread_registry.cpp
+    sanitizer_common/sanitizer_tls_get_addr.cpp
+    sanitizer_common/sanitizer_type_traits.cpp
+    sanitizer_common/sanitizer_unwind_linux_libcdep.cpp
+    sanitizer_common/sanitizer_unwind_win.cpp
+    sanitizer_common/sanitizer_win.cpp
+    scudo/scudo_allocator.cpp
+    scudo/scudo_crc32.cpp
+    scudo/scudo_errors.cpp
+    scudo/scudo_flags.cpp
+    scudo/scudo_malloc.cpp
+    scudo/scudo_termination.cpp
+    scudo/scudo_tsd_exclusive.cpp
+    scudo/scudo_tsd_shared.cpp
+    scudo/scudo_utils.cpp
+    ubsan/ubsan_diag.cpp
+    ubsan/ubsan_flags.cpp
+    ubsan/ubsan_handlers.cpp
+    ubsan/ubsan_init.cpp
+    ubsan/ubsan_monitor.cpp
+    ubsan/ubsan_value.cpp
+)
+
+END()