add sanitizers dependencies

1 files changed, 711 insertions, 0 deletions

diff --git a/contrib/libs/clang14-rt/lib/asan/asan_interceptors.cpp b/contrib/libs/clang14-rt/lib/asan/asan_interceptors.cpp
new file mode 100644
index 0000000000..2ff314a5a9
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/asan/asan_interceptors.cpp
@@ -0,0 +1,711 @@
+//===-- asan_interceptors.cpp ---------------------------------------------===//
+//
+// 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 is a part of AddressSanitizer, an address sanity checker.
+//
+// Intercept various libc functions.
+//===----------------------------------------------------------------------===//
+
+#include "asan_interceptors.h"
+#include "asan_allocator.h"
+#include "asan_internal.h"
+#include "asan_mapping.h"
+#include "asan_poisoning.h"
+#include "asan_report.h"
+#include "asan_stack.h"
+#include "asan_stats.h"
+#include "asan_suppressions.h"
+#include "lsan/lsan_common.h"
+#include "sanitizer_common/sanitizer_libc.h"
+
+// There is no general interception at all on Fuchsia.
+// Only the functions in asan_interceptors_memintrinsics.cpp are
+// really defined to replace libc functions.
+#if !SANITIZER_FUCHSIA
+
+#  if SANITIZER_POSIX
+#    include "sanitizer_common/sanitizer_posix.h"
+#  endif
+
+#  if ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION || \
+      ASAN_INTERCEPT__SJLJ_UNWIND_RAISEEXCEPTION
+#    include <unwind.h>
+#  endif
+
+#  if defined(__i386) && SANITIZER_LINUX
+#    define ASAN_PTHREAD_CREATE_VERSION "GLIBC_2.1"
+#  elif defined(__mips__) && SANITIZER_LINUX
+#    define ASAN_PTHREAD_CREATE_VERSION "GLIBC_2.2"
+#  endif
+
+namespace __asan {
+
+#define ASAN_READ_STRING_OF_LEN(ctx, s, len, n)                 \
+  ASAN_READ_RANGE((ctx), (s),                                   \
+    common_flags()->strict_string_checks ? (len) + 1 : (n))
+
+#  define ASAN_READ_STRING(ctx, s, n) \
+    ASAN_READ_STRING_OF_LEN((ctx), (s), internal_strlen(s), (n))
+
+static inline uptr MaybeRealStrnlen(const char *s, uptr maxlen) {
+#if SANITIZER_INTERCEPT_STRNLEN
+  if (REAL(strnlen)) {
+    return REAL(strnlen)(s, maxlen);
+  }
+#endif
+  return internal_strnlen(s, maxlen);
+}
+
+void SetThreadName(const char *name) {
+  AsanThread *t = GetCurrentThread();
+  if (t)
+    asanThreadRegistry().SetThreadName(t->tid(), name);
+}
+
+int OnExit() {
+  if (CAN_SANITIZE_LEAKS && common_flags()->detect_leaks &&
+      __lsan::HasReportedLeaks()) {
+    return common_flags()->exitcode;
+  }
+  // FIXME: ask frontend whether we need to return failure.
+  return 0;
+}
+
+} // namespace __asan
+
+// ---------------------- Wrappers ---------------- {{{1
+using namespace __asan;
+
+DECLARE_REAL_AND_INTERCEPTOR(void *, malloc, uptr)
+DECLARE_REAL_AND_INTERCEPTOR(void, free, void *)
+
+#define ASAN_INTERCEPTOR_ENTER(ctx, func)                                      \
+  AsanInterceptorContext _ctx = {#func};                                       \
+  ctx = (void *)&_ctx;                                                         \
+  (void) ctx;                                                                  \
+
+#define COMMON_INTERCEPT_FUNCTION(name) ASAN_INTERCEPT_FUNC(name)
+#define COMMON_INTERCEPT_FUNCTION_VER(name, ver) \
+  ASAN_INTERCEPT_FUNC_VER(name, ver)
+#define COMMON_INTERCEPT_FUNCTION_VER_UNVERSIONED_FALLBACK(name, ver) \
+  ASAN_INTERCEPT_FUNC_VER_UNVERSIONED_FALLBACK(name, ver)
+#define COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, size) \
+  ASAN_WRITE_RANGE(ctx, ptr, size)
+#define COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, size) \
+  ASAN_READ_RANGE(ctx, ptr, size)
+#define COMMON_INTERCEPTOR_ENTER(ctx, func, ...)                               \
+  ASAN_INTERCEPTOR_ENTER(ctx, func);                                           \
+  do {                                                                         \
+    if (asan_init_is_running)                                                  \
+      return REAL(func)(__VA_ARGS__);                                          \
+    if (SANITIZER_MAC && UNLIKELY(!asan_inited))                               \
+      return REAL(func)(__VA_ARGS__);                                          \
+    ENSURE_ASAN_INITED();                                                      \
+  } while (false)
+#define COMMON_INTERCEPTOR_DIR_ACQUIRE(ctx, path) \
+  do {                                            \
+  } while (false)
+#define COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd) \
+  do {                                         \
+  } while (false)
+#define COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd) \
+  do {                                         \
+  } while (false)
+#define COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, newfd) \
+  do {                                                      \
+  } while (false)
+#define COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, name) SetThreadName(name)
+// Should be asanThreadRegistry().SetThreadNameByUserId(thread, name)
+// But asan does not remember UserId's for threads (pthread_t);
+// and remembers all ever existed threads, so the linear search by UserId
+// can be slow.
+#define COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, name) \
+  do {                                                         \
+  } while (false)
+#define COMMON_INTERCEPTOR_BLOCK_REAL(name) REAL(name)
+// Strict init-order checking is dlopen-hostile:
+// https://github.com/google/sanitizers/issues/178
+#  define COMMON_INTERCEPTOR_DLOPEN(filename, flag) \
+    ({                                              \
+      if (flags()->strict_init_order)               \
+        StopInitOrderChecking();                    \
+      CheckNoDeepBind(filename, flag);              \
+      REAL(dlopen)(filename, flag);                 \
+    })
+#  define COMMON_INTERCEPTOR_ON_EXIT(ctx) OnExit()
+#  define COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, handle)
+#  define COMMON_INTERCEPTOR_LIBRARY_UNLOADED()
+#  define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED (!asan_inited)
+#  define COMMON_INTERCEPTOR_GET_TLS_RANGE(begin, end) \
+    if (AsanThread *t = GetCurrentThread()) {          \
+      *begin = t->tls_begin();                         \
+      *end = t->tls_end();                             \
+    } else {                                           \
+      *begin = *end = 0;                               \
+    }
+
+#define COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, to, from, size) \
+  do {                                                       \
+    ASAN_INTERCEPTOR_ENTER(ctx, memmove);                    \
+    ASAN_MEMMOVE_IMPL(ctx, to, from, size);                  \
+  } while (false)
+
+#define COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, to, from, size) \
+  do {                                                      \
+    ASAN_INTERCEPTOR_ENTER(ctx, memcpy);                    \
+    ASAN_MEMCPY_IMPL(ctx, to, from, size);                  \
+  } while (false)
+
+#define COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, c, size) \
+  do {                                                      \
+    ASAN_INTERCEPTOR_ENTER(ctx, memset);                    \
+    ASAN_MEMSET_IMPL(ctx, block, c, size);                  \
+  } while (false)
+
+#if CAN_SANITIZE_LEAKS
+#define COMMON_INTERCEPTOR_STRERROR()                       \
+  __lsan::ScopedInterceptorDisabler disabler
+#endif
+
+#include "sanitizer_common/sanitizer_common_interceptors.inc"
+#include "sanitizer_common/sanitizer_signal_interceptors.inc"
+
+// Syscall interceptors don't have contexts, we don't support suppressions
+// for them.
+#define COMMON_SYSCALL_PRE_READ_RANGE(p, s) ASAN_READ_RANGE(nullptr, p, s)
+#define COMMON_SYSCALL_PRE_WRITE_RANGE(p, s) ASAN_WRITE_RANGE(nullptr, p, s)
+#define COMMON_SYSCALL_POST_READ_RANGE(p, s) \
+  do {                                       \
+    (void)(p);                               \
+    (void)(s);                               \
+  } while (false)
+#define COMMON_SYSCALL_POST_WRITE_RANGE(p, s) \
+  do {                                        \
+    (void)(p);                                \
+    (void)(s);                                \
+  } while (false)
+#include "sanitizer_common/sanitizer_common_syscalls.inc"
+#include "sanitizer_common/sanitizer_syscalls_netbsd.inc"
+
+#if ASAN_INTERCEPT_PTHREAD_CREATE
+static thread_return_t THREAD_CALLING_CONV asan_thread_start(void *arg) {
+  AsanThread *t = (AsanThread *)arg;
+  SetCurrentThread(t);
+  return t->ThreadStart(GetTid());
+}
+
+INTERCEPTOR(int, pthread_create, void *thread,
+    void *attr, void *(*start_routine)(void*), void *arg) {
+  EnsureMainThreadIDIsCorrect();
+  // Strict init-order checking is thread-hostile.
+  if (flags()->strict_init_order)
+    StopInitOrderChecking();
+  GET_STACK_TRACE_THREAD;
+  int detached = 0;
+  if (attr)
+    REAL(pthread_attr_getdetachstate)(attr, &detached);
+
+  u32 current_tid = GetCurrentTidOrInvalid();
+  AsanThread *t =
+      AsanThread::Create(start_routine, arg, current_tid, &stack, detached);
+
+  int result;
+  {
+    // Ignore all allocations made by pthread_create: thread stack/TLS may be
+    // stored by pthread for future reuse even after thread destruction, and
+    // the linked list it's stored in doesn't even hold valid pointers to the
+    // objects, the latter are calculated by obscure pointer arithmetic.
+#if CAN_SANITIZE_LEAKS
+    __lsan::ScopedInterceptorDisabler disabler;
+#endif
+    result = REAL(pthread_create)(thread, attr, asan_thread_start, t);
+  }
+  if (result != 0) {
+    // If the thread didn't start delete the AsanThread to avoid leaking it.
+    // Note AsanThreadContexts never get destroyed so the AsanThreadContext
+    // that was just created for the AsanThread is wasted.
+    t->Destroy();
+  }
+  return result;
+}
+
+INTERCEPTOR(int, pthread_join, void *t, void **arg) {
+  return real_pthread_join(t, arg);
+}
+
+DEFINE_REAL_PTHREAD_FUNCTIONS
+#endif  // ASAN_INTERCEPT_PTHREAD_CREATE
+
+#if ASAN_INTERCEPT_SWAPCONTEXT
+static void ClearShadowMemoryForContextStack(uptr stack, uptr ssize) {
+  // Align to page size.
+  uptr PageSize = GetPageSizeCached();
+  uptr bottom = stack & ~(PageSize - 1);
+  ssize += stack - bottom;
+  ssize = RoundUpTo(ssize, PageSize);
+  static const uptr kMaxSaneContextStackSize = 1 << 22;  // 4 Mb
+  if (AddrIsInMem(bottom) && ssize && ssize <= kMaxSaneContextStackSize) {
+    PoisonShadow(bottom, ssize, 0);
+  }
+}
+
+INTERCEPTOR(int, swapcontext, struct ucontext_t *oucp,
+            struct ucontext_t *ucp) {
+  static bool reported_warning = false;
+  if (!reported_warning) {
+    Report("WARNING: ASan doesn't fully support makecontext/swapcontext "
+           "functions and may produce false positives in some cases!\n");
+    reported_warning = true;
+  }
+  // Clear shadow memory for new context (it may share stack
+  // with current context).
+  uptr stack, ssize;
+  ReadContextStack(ucp, &stack, &ssize);
+  ClearShadowMemoryForContextStack(stack, ssize);
+#if __has_attribute(__indirect_return__) && \
+    (defined(__x86_64__) || defined(__i386__))
+  int (*real_swapcontext)(struct ucontext_t *, struct ucontext_t *)
+    __attribute__((__indirect_return__))
+    = REAL(swapcontext);
+  int res = real_swapcontext(oucp, ucp);
+#else
+  int res = REAL(swapcontext)(oucp, ucp);
+#endif
+  // swapcontext technically does not return, but program may swap context to
+  // "oucp" later, that would look as if swapcontext() returned 0.
+  // We need to clear shadow for ucp once again, as it may be in arbitrary
+  // state.
+  ClearShadowMemoryForContextStack(stack, ssize);
+  return res;
+}
+#endif  // ASAN_INTERCEPT_SWAPCONTEXT
+
+#if SANITIZER_NETBSD
+#define longjmp __longjmp14
+#define siglongjmp __siglongjmp14
+#endif
+
+INTERCEPTOR(void, longjmp, void *env, int val) {
+  __asan_handle_no_return();
+  REAL(longjmp)(env, val);
+}
+
+#if ASAN_INTERCEPT__LONGJMP
+INTERCEPTOR(void, _longjmp, void *env, int val) {
+  __asan_handle_no_return();
+  REAL(_longjmp)(env, val);
+}
+#endif
+
+#if ASAN_INTERCEPT___LONGJMP_CHK
+INTERCEPTOR(void, __longjmp_chk, void *env, int val) {
+  __asan_handle_no_return();
+  REAL(__longjmp_chk)(env, val);
+}
+#endif
+
+#if ASAN_INTERCEPT_SIGLONGJMP
+INTERCEPTOR(void, siglongjmp, void *env, int val) {
+  __asan_handle_no_return();
+  REAL(siglongjmp)(env, val);
+}
+#endif
+
+#if ASAN_INTERCEPT___CXA_THROW
+INTERCEPTOR(void, __cxa_throw, void *a, void *b, void *c) {
+  CHECK(REAL(__cxa_throw));
+  __asan_handle_no_return();
+  REAL(__cxa_throw)(a, b, c);
+}
+#endif
+
+#if ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION
+INTERCEPTOR(void, __cxa_rethrow_primary_exception, void *a) {
+  CHECK(REAL(__cxa_rethrow_primary_exception));
+  __asan_handle_no_return();
+  REAL(__cxa_rethrow_primary_exception)(a);
+}
+#endif
+
+#if ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION
+INTERCEPTOR(_Unwind_Reason_Code, _Unwind_RaiseException,
+            _Unwind_Exception *object) {
+  CHECK(REAL(_Unwind_RaiseException));
+  __asan_handle_no_return();
+  return REAL(_Unwind_RaiseException)(object);
+}
+#endif
+
+#if ASAN_INTERCEPT__SJLJ_UNWIND_RAISEEXCEPTION
+INTERCEPTOR(_Unwind_Reason_Code, _Unwind_SjLj_RaiseException,
+            _Unwind_Exception *object) {
+  CHECK(REAL(_Unwind_SjLj_RaiseException));
+  __asan_handle_no_return();
+  return REAL(_Unwind_SjLj_RaiseException)(object);
+}
+#endif
+
+#if ASAN_INTERCEPT_INDEX
+# if ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX
+INTERCEPTOR(char*, index, const char *string, int c)
+  ALIAS(WRAPPER_NAME(strchr));
+# else
+#  if SANITIZER_MAC
+DECLARE_REAL(char*, index, const char *string, int c)
+OVERRIDE_FUNCTION(index, strchr);
+#  else
+DEFINE_REAL(char*, index, const char *string, int c)
+#  endif
+# endif
+#endif  // ASAN_INTERCEPT_INDEX
+
+// For both strcat() and strncat() we need to check the validity of |to|
+// argument irrespective of the |from| length.
+  INTERCEPTOR(char *, strcat, char *to, const char *from) {
+    void *ctx;
+    ASAN_INTERCEPTOR_ENTER(ctx, strcat);
+    ENSURE_ASAN_INITED();
+    if (flags()->replace_str) {
+      uptr from_length = internal_strlen(from);
+      ASAN_READ_RANGE(ctx, from, from_length + 1);
+      uptr to_length = internal_strlen(to);
+      ASAN_READ_STRING_OF_LEN(ctx, to, to_length, to_length);
+      ASAN_WRITE_RANGE(ctx, to + to_length, from_length + 1);
+      // If the copying actually happens, the |from| string should not overlap
+      // with the resulting string starting at |to|, which has a length of
+      // to_length + from_length + 1.
+      if (from_length > 0) {
+        CHECK_RANGES_OVERLAP("strcat", to, from_length + to_length + 1, from,
+                             from_length + 1);
+      }
+    }
+    return REAL(strcat)(to, from);
+  }
+
+INTERCEPTOR(char*, strncat, char *to, const char *from, uptr size) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, strncat);
+  ENSURE_ASAN_INITED();
+  if (flags()->replace_str) {
+    uptr from_length = MaybeRealStrnlen(from, size);
+    uptr copy_length = Min(size, from_length + 1);
+    ASAN_READ_RANGE(ctx, from, copy_length);
+    uptr to_length = internal_strlen(to);
+    ASAN_READ_STRING_OF_LEN(ctx, to, to_length, to_length);
+    ASAN_WRITE_RANGE(ctx, to + to_length, from_length + 1);
+    if (from_length > 0) {
+      CHECK_RANGES_OVERLAP("strncat", to, to_length + copy_length + 1,
+                           from, copy_length);
+    }
+  }
+  return REAL(strncat)(to, from, size);
+}
+
+INTERCEPTOR(char *, strcpy, char *to, const char *from) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, strcpy);
+#if SANITIZER_MAC
+  if (UNLIKELY(!asan_inited))
+    return REAL(strcpy)(to, from);
+#endif
+  // strcpy is called from malloc_default_purgeable_zone()
+  // in __asan::ReplaceSystemAlloc() on Mac.
+  if (asan_init_is_running) {
+    return REAL(strcpy)(to, from);
+  }
+  ENSURE_ASAN_INITED();
+  if (flags()->replace_str) {
+    uptr from_size = internal_strlen(from) + 1;
+    CHECK_RANGES_OVERLAP("strcpy", to, from_size, from, from_size);
+    ASAN_READ_RANGE(ctx, from, from_size);
+    ASAN_WRITE_RANGE(ctx, to, from_size);
+  }
+  return REAL(strcpy)(to, from);
+}
+
+INTERCEPTOR(char*, strdup, const char *s) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, strdup);
+  if (UNLIKELY(!asan_inited)) return internal_strdup(s);
+  ENSURE_ASAN_INITED();
+  uptr length = internal_strlen(s);
+  if (flags()->replace_str) {
+    ASAN_READ_RANGE(ctx, s, length + 1);
+  }
+  GET_STACK_TRACE_MALLOC;
+  void *new_mem = asan_malloc(length + 1, &stack);
+  REAL(memcpy)(new_mem, s, length + 1);
+  return reinterpret_cast<char*>(new_mem);
+}
+
+#if ASAN_INTERCEPT___STRDUP
+INTERCEPTOR(char*, __strdup, const char *s) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, strdup);
+  if (UNLIKELY(!asan_inited)) return internal_strdup(s);
+  ENSURE_ASAN_INITED();
+  uptr length = internal_strlen(s);
+  if (flags()->replace_str) {
+    ASAN_READ_RANGE(ctx, s, length + 1);
+  }
+  GET_STACK_TRACE_MALLOC;
+  void *new_mem = asan_malloc(length + 1, &stack);
+  REAL(memcpy)(new_mem, s, length + 1);
+  return reinterpret_cast<char*>(new_mem);
+}
+#endif // ASAN_INTERCEPT___STRDUP
+
+INTERCEPTOR(char*, strncpy, char *to, const char *from, uptr size) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, strncpy);
+  ENSURE_ASAN_INITED();
+  if (flags()->replace_str) {
+    uptr from_size = Min(size, MaybeRealStrnlen(from, size) + 1);
+    CHECK_RANGES_OVERLAP("strncpy", to, from_size, from, from_size);
+    ASAN_READ_RANGE(ctx, from, from_size);
+    ASAN_WRITE_RANGE(ctx, to, size);
+  }
+  return REAL(strncpy)(to, from, size);
+}
+
+INTERCEPTOR(long, strtol, const char *nptr, char **endptr, int base) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, strtol);
+  ENSURE_ASAN_INITED();
+  if (!flags()->replace_str) {
+    return REAL(strtol)(nptr, endptr, base);
+  }
+  char *real_endptr;
+  long result = REAL(strtol)(nptr, &real_endptr, base);
+  StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base);
+  return result;
+}
+
+INTERCEPTOR(int, atoi, const char *nptr) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, atoi);
+#if SANITIZER_MAC
+  if (UNLIKELY(!asan_inited)) return REAL(atoi)(nptr);
+#endif
+  ENSURE_ASAN_INITED();
+  if (!flags()->replace_str) {
+    return REAL(atoi)(nptr);
+  }
+  char *real_endptr;
+  // "man atoi" tells that behavior of atoi(nptr) is the same as
+  // strtol(nptr, 0, 10), i.e. it sets errno to ERANGE if the
+  // parsed integer can't be stored in *long* type (even if it's
+  // different from int). So, we just imitate this behavior.
+  int result = REAL(strtol)(nptr, &real_endptr, 10);
+  FixRealStrtolEndptr(nptr, &real_endptr);
+  ASAN_READ_STRING(ctx, nptr, (real_endptr - nptr) + 1);
+  return result;
+}
+
+INTERCEPTOR(long, atol, const char *nptr) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, atol);
+#if SANITIZER_MAC
+  if (UNLIKELY(!asan_inited)) return REAL(atol)(nptr);
+#endif
+  ENSURE_ASAN_INITED();
+  if (!flags()->replace_str) {
+    return REAL(atol)(nptr);
+  }
+  char *real_endptr;
+  long result = REAL(strtol)(nptr, &real_endptr, 10);
+  FixRealStrtolEndptr(nptr, &real_endptr);
+  ASAN_READ_STRING(ctx, nptr, (real_endptr - nptr) + 1);
+  return result;
+}
+
+#if ASAN_INTERCEPT_ATOLL_AND_STRTOLL
+INTERCEPTOR(long long, strtoll, const char *nptr, char **endptr, int base) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, strtoll);
+  ENSURE_ASAN_INITED();
+  if (!flags()->replace_str) {
+    return REAL(strtoll)(nptr, endptr, base);
+  }
+  char *real_endptr;
+  long long result = REAL(strtoll)(nptr, &real_endptr, base);
+  StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base);
+  return result;
+}
+
+INTERCEPTOR(long long, atoll, const char *nptr) {
+  void *ctx;
+  ASAN_INTERCEPTOR_ENTER(ctx, atoll);
+  ENSURE_ASAN_INITED();
+  if (!flags()->replace_str) {
+    return REAL(atoll)(nptr);
+  }
+  char *real_endptr;
+  long long result = REAL(strtoll)(nptr, &real_endptr, 10);
+  FixRealStrtolEndptr(nptr, &real_endptr);
+  ASAN_READ_STRING(ctx, nptr, (real_endptr - nptr) + 1);
+  return result;
+}
+#endif  // ASAN_INTERCEPT_ATOLL_AND_STRTOLL
+
+#if ASAN_INTERCEPT___CXA_ATEXIT || ASAN_INTERCEPT_ATEXIT
+static void AtCxaAtexit(void *unused) {
+  (void)unused;
+  StopInitOrderChecking();
+}
+#endif
+
+#if ASAN_INTERCEPT___CXA_ATEXIT
+INTERCEPTOR(int, __cxa_atexit, void (*func)(void *), void *arg,
+            void *dso_handle) {
+#if SANITIZER_MAC
+  if (UNLIKELY(!asan_inited)) return REAL(__cxa_atexit)(func, arg, dso_handle);
+#endif
+  ENSURE_ASAN_INITED();
+#if CAN_SANITIZE_LEAKS
+  __lsan::ScopedInterceptorDisabler disabler;
+#endif
+  int res = REAL(__cxa_atexit)(func, arg, dso_handle);
+  REAL(__cxa_atexit)(AtCxaAtexit, nullptr, nullptr);
+  return res;
+}
+#endif  // ASAN_INTERCEPT___CXA_ATEXIT
+
+#if ASAN_INTERCEPT_ATEXIT
+INTERCEPTOR(int, atexit, void (*func)()) {
+  ENSURE_ASAN_INITED();
+#if CAN_SANITIZE_LEAKS
+  __lsan::ScopedInterceptorDisabler disabler;
+#endif
+  // Avoid calling real atexit as it is unreachable on at least on Linux.
+  int res = REAL(__cxa_atexit)((void (*)(void *a))func, nullptr, nullptr);
+  REAL(__cxa_atexit)(AtCxaAtexit, nullptr, nullptr);
+  return res;
+}
+#endif
+
+#if ASAN_INTERCEPT_PTHREAD_ATFORK
+extern "C" {
+extern int _pthread_atfork(void (*prepare)(), void (*parent)(),
+                           void (*child)());
+};
+
+INTERCEPTOR(int, pthread_atfork, void (*prepare)(), void (*parent)(),
+            void (*child)()) {
+#if CAN_SANITIZE_LEAKS
+  __lsan::ScopedInterceptorDisabler disabler;
+#endif
+  // REAL(pthread_atfork) cannot be called due to symbol indirections at least
+  // on NetBSD
+  return _pthread_atfork(prepare, parent, child);
+}
+#endif
+
+#if ASAN_INTERCEPT_VFORK
+DEFINE_REAL(int, vfork)
+DECLARE_EXTERN_INTERCEPTOR_AND_WRAPPER(int, vfork)
+#endif
+
+// ---------------------- InitializeAsanInterceptors ---------------- {{{1
+namespace __asan {
+void InitializeAsanInterceptors() {
+  static bool was_called_once;
+  CHECK(!was_called_once);
+  was_called_once = true;
+  InitializeCommonInterceptors();
+  InitializeSignalInterceptors();
+
+  // Intercept str* functions.
+  ASAN_INTERCEPT_FUNC(strcat);
+  ASAN_INTERCEPT_FUNC(strcpy);
+  ASAN_INTERCEPT_FUNC(strncat);
+  ASAN_INTERCEPT_FUNC(strncpy);
+  ASAN_INTERCEPT_FUNC(strdup);
+#if ASAN_INTERCEPT___STRDUP
+  ASAN_INTERCEPT_FUNC(__strdup);
+#endif
+#if ASAN_INTERCEPT_INDEX && ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX
+  ASAN_INTERCEPT_FUNC(index);
+#endif
+
+  ASAN_INTERCEPT_FUNC(atoi);
+  ASAN_INTERCEPT_FUNC(atol);
+  ASAN_INTERCEPT_FUNC(strtol);
+#if ASAN_INTERCEPT_ATOLL_AND_STRTOLL
+  ASAN_INTERCEPT_FUNC(atoll);
+  ASAN_INTERCEPT_FUNC(strtoll);
+#endif
+
+  // Intecept jump-related functions.
+  ASAN_INTERCEPT_FUNC(longjmp);
+
+#if ASAN_INTERCEPT_SWAPCONTEXT
+  ASAN_INTERCEPT_FUNC(swapcontext);
+#endif
+#if ASAN_INTERCEPT__LONGJMP
+  ASAN_INTERCEPT_FUNC(_longjmp);
+#endif
+#if ASAN_INTERCEPT___LONGJMP_CHK
+  ASAN_INTERCEPT_FUNC(__longjmp_chk);
+#endif
+#if ASAN_INTERCEPT_SIGLONGJMP
+  ASAN_INTERCEPT_FUNC(siglongjmp);
+#endif
+
+  // Intercept exception handling functions.
+#if ASAN_INTERCEPT___CXA_THROW
+  ASAN_INTERCEPT_FUNC(__cxa_throw);
+#endif
+#if ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION
+  ASAN_INTERCEPT_FUNC(__cxa_rethrow_primary_exception);
+#endif
+  // Indirectly intercept std::rethrow_exception.
+#if ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION
+  INTERCEPT_FUNCTION(_Unwind_RaiseException);
+#endif
+  // Indirectly intercept std::rethrow_exception.
+#if ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION
+  INTERCEPT_FUNCTION(_Unwind_SjLj_RaiseException);
+#endif
+
+  // Intercept threading-related functions
+#if ASAN_INTERCEPT_PTHREAD_CREATE
+// TODO: this should probably have an unversioned fallback for newer arches?
+#if defined(ASAN_PTHREAD_CREATE_VERSION)
+  ASAN_INTERCEPT_FUNC_VER(pthread_create, ASAN_PTHREAD_CREATE_VERSION);
+#else
+  ASAN_INTERCEPT_FUNC(pthread_create);
+#endif
+  ASAN_INTERCEPT_FUNC(pthread_join);
+#endif
+
+  // Intercept atexit function.
+#if ASAN_INTERCEPT___CXA_ATEXIT
+  ASAN_INTERCEPT_FUNC(__cxa_atexit);
+#endif
+
+#if ASAN_INTERCEPT_ATEXIT
+  ASAN_INTERCEPT_FUNC(atexit);
+#endif
+
+#if ASAN_INTERCEPT_PTHREAD_ATFORK
+  ASAN_INTERCEPT_FUNC(pthread_atfork);
+#endif
+
+#if ASAN_INTERCEPT_VFORK
+  ASAN_INTERCEPT_FUNC(vfork);
+#endif
+
+  InitializePlatformInterceptors();
+
+  VReport(1, "AddressSanitizer: libc interceptors initialized\n");
+}
+
+} // namespace __asan
+
+#endif  // !SANITIZER_FUCHSIA