add sanitizers dependencies

1 files changed, 205 insertions, 0 deletions

diff --git a/contrib/libs/clang14-rt/lib/sanitizer_common/sanitizer_symbolizer_mac.cpp b/contrib/libs/clang14-rt/lib/sanitizer_common/sanitizer_symbolizer_mac.cpp
new file mode 100644
index 0000000000..ac811c8a91
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/sanitizer_common/sanitizer_symbolizer_mac.cpp
@@ -0,0 +1,205 @@
+//===-- sanitizer_symbolizer_mac.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 shared between various sanitizers' runtime libraries.
+//
+// Implementation of Mac-specific "atos" symbolizer.
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_platform.h"
+#if SANITIZER_MAC
+
+#include "sanitizer_allocator_internal.h"
+#include "sanitizer_mac.h"
+#include "sanitizer_symbolizer_mac.h"
+
+#include <dlfcn.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <util.h>
+
+namespace __sanitizer {
+
+bool DlAddrSymbolizer::SymbolizePC(uptr addr, SymbolizedStack *stack) {
+  Dl_info info;
+  int result = dladdr((const void *)addr, &info);
+  if (!result) return false;
+
+  // Compute offset if possible. `dladdr()` doesn't always ensure that `addr >=
+  // sym_addr` so only compute the offset when this holds. Failure to find the
+  // function offset is not treated as a failure because it might still be
+  // possible to get the symbol name.
+  uptr sym_addr = reinterpret_cast<uptr>(info.dli_saddr);
+  if (addr >= sym_addr) {
+    stack->info.function_offset = addr - sym_addr;
+  }
+
+  const char *demangled = DemangleSwiftAndCXX(info.dli_sname);
+  if (!demangled) return false;
+  stack->info.function = internal_strdup(demangled);
+  return true;
+}
+
+bool DlAddrSymbolizer::SymbolizeData(uptr addr, DataInfo *datainfo) {
+  Dl_info info;
+  int result = dladdr((const void *)addr, &info);
+  if (!result) return false;
+  const char *demangled = DemangleSwiftAndCXX(info.dli_sname);
+  datainfo->name = internal_strdup(demangled);
+  datainfo->start = (uptr)info.dli_saddr;
+  return true;
+}
+
+class AtosSymbolizerProcess final : public SymbolizerProcess {
+ public:
+  explicit AtosSymbolizerProcess(const char *path)
+      : SymbolizerProcess(path, /*use_posix_spawn*/ true) {
+    pid_str_[0] = '\0';
+  }
+
+ private:
+  bool StartSymbolizerSubprocess() override {
+    // Put the string command line argument in the object so that it outlives
+    // the call to GetArgV.
+    internal_snprintf(pid_str_, sizeof(pid_str_), "%d", (int)internal_getpid());
+
+    // Configure sandbox before starting atos process.
+    return SymbolizerProcess::StartSymbolizerSubprocess();
+  }
+
+  bool ReachedEndOfOutput(const char *buffer, uptr length) const override {
+    return (length >= 1 && buffer[length - 1] == '\n');
+  }
+
+  void GetArgV(const char *path_to_binary,
+               const char *(&argv)[kArgVMax]) const override {
+    int i = 0;
+    argv[i++] = path_to_binary;
+    argv[i++] = "-p";
+    argv[i++] = &pid_str_[0];
+    if (GetMacosAlignedVersion() == MacosVersion(10, 9)) {
+      // On Mavericks atos prints a deprecation warning which we suppress by
+      // passing -d. The warning isn't present on other OSX versions, even the
+      // newer ones.
+      argv[i++] = "-d";
+    }
+    argv[i++] = nullptr;
+    CHECK_LE(i, kArgVMax);
+  }
+
+  char pid_str_[16];
+};
+
+#undef K_ATOS_ENV_VAR
+
+static bool ParseCommandOutput(const char *str, uptr addr, char **out_name,
+                               char **out_module, char **out_file, uptr *line,
+                               uptr *start_address) {
+  // Trim ending newlines.
+  char *trim;
+  ExtractTokenUpToDelimiter(str, "\n", &trim);
+
+  // The line from `atos` is in one of these formats:
+  //   myfunction (in library.dylib) (sourcefile.c:17)
+  //   myfunction (in library.dylib) + 0x1fe
+  //   myfunction (in library.dylib) + 15
+  //   0xdeadbeef (in library.dylib) + 0x1fe
+  //   0xdeadbeef (in library.dylib) + 15
+  //   0xdeadbeef (in library.dylib)
+  //   0xdeadbeef
+
+  const char *rest = trim;
+  char *symbol_name;
+  rest = ExtractTokenUpToDelimiter(rest, " (in ", &symbol_name);
+  if (rest[0] == '\0') {
+    InternalFree(symbol_name);
+    InternalFree(trim);
+    return false;
+  }
+
+  if (internal_strncmp(symbol_name, "0x", 2) != 0)
+    *out_name = symbol_name;
+  else
+    InternalFree(symbol_name);
+  rest = ExtractTokenUpToDelimiter(rest, ") ", out_module);
+
+  if (rest[0] == '(') {
+    if (out_file) {
+      rest++;
+      rest = ExtractTokenUpToDelimiter(rest, ":", out_file);
+      char *extracted_line_number;
+      rest = ExtractTokenUpToDelimiter(rest, ")", &extracted_line_number);
+      if (line) *line = (uptr)internal_atoll(extracted_line_number);
+      InternalFree(extracted_line_number);
+    }
+  } else if (rest[0] == '+') {
+    rest += 2;
+    uptr offset = internal_atoll(rest);
+    if (start_address) *start_address = addr - offset;
+  }
+
+  InternalFree(trim);
+  return true;
+}
+
+AtosSymbolizer::AtosSymbolizer(const char *path, LowLevelAllocator *allocator)
+    : process_(new (*allocator) AtosSymbolizerProcess(path)) {}
+
+bool AtosSymbolizer::SymbolizePC(uptr addr, SymbolizedStack *stack) {
+  if (!process_) return false;
+  if (addr == 0) return false;
+  char command[32];
+  internal_snprintf(command, sizeof(command), "0x%zx\n", addr);
+  const char *buf = process_->SendCommand(command);
+  if (!buf) return false;
+  uptr line;
+  uptr start_address = AddressInfo::kUnknown;
+  if (!ParseCommandOutput(buf, addr, &stack->info.function, &stack->info.module,
+                          &stack->info.file, &line, &start_address)) {
+    process_ = nullptr;
+    return false;
+  }
+  stack->info.line = (int)line;
+
+  if (start_address == AddressInfo::kUnknown) {
+    // Fallback to dladdr() to get function start address if atos doesn't report
+    // it.
+    Dl_info info;
+    int result = dladdr((const void *)addr, &info);
+    if (result)
+      start_address = reinterpret_cast<uptr>(info.dli_saddr);
+  }
+
+  // Only assign to `function_offset` if we were able to get the function's
+  // start address and we got a sensible `start_address` (dladdr doesn't always
+  // ensure that `addr >= sym_addr`).
+  if (start_address != AddressInfo::kUnknown && addr >= start_address) {
+    stack->info.function_offset = addr - start_address;
+  }
+  return true;
+}
+
+bool AtosSymbolizer::SymbolizeData(uptr addr, DataInfo *info) {
+  if (!process_) return false;
+  char command[32];
+  internal_snprintf(command, sizeof(command), "0x%zx\n", addr);
+  const char *buf = process_->SendCommand(command);
+  if (!buf) return false;
+  if (!ParseCommandOutput(buf, addr, &info->name, &info->module, nullptr,
+                          nullptr, &info->start)) {
+    process_ = nullptr;
+    return false;
+  }
+  return true;
+}
+
+}  // namespace __sanitizer
+
+#endif  // SANITIZER_MAC