add sanitizers dependencies

1 files changed, 258 insertions, 0 deletions

diff --git a/contrib/libs/clang14-rt/lib/gwp_asan/optional/options_parser.cpp b/contrib/libs/clang14-rt/lib/gwp_asan/optional/options_parser.cpp
new file mode 100644
index 0000000000..60234124e8
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/gwp_asan/optional/options_parser.cpp
@@ -0,0 +1,258 @@
+//===-- options_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 "gwp_asan/optional/options_parser.h"
+#include "gwp_asan/optional/printf.h"
+#include "gwp_asan/utilities.h"
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+namespace {
+enum class OptionType : uint8_t {
+  OT_bool,
+  OT_int,
+};
+
+#define InvokeIfNonNull(Printf, ...)                                           \
+  do {                                                                         \
+    if (Printf)                                                                \
+      Printf(__VA_ARGS__);                                                     \
+  } while (0);
+
+class OptionParser {
+public:
+  explicit OptionParser(gwp_asan::Printf_t PrintfForWarnings)
+      : Printf(PrintfForWarnings) {}
+  void registerOption(const char *Name, const char *Desc, OptionType Type,
+                      void *Var);
+  void parseString(const char *S);
+  void printOptionDescriptions();
+
+private:
+  // Calculate at compile-time how many options are available.
+#define GWP_ASAN_OPTION(...) +1
+  static constexpr size_t MaxOptions = 0
+#include "gwp_asan/options.inc"
+      ;
+#undef GWP_ASAN_OPTION
+
+  struct Option {
+    const char *Name;
+    const char *Desc;
+    OptionType Type;
+    void *Var;
+  } Options[MaxOptions];
+
+  size_t NumberOfOptions = 0;
+  const char *Buffer = nullptr;
+  uintptr_t Pos = 0;
+  gwp_asan::Printf_t Printf = nullptr;
+
+  void skipWhitespace();
+  void parseOptions();
+  bool parseOption();
+  bool setOptionToValue(const char *Name, const char *Value);
+};
+
+void OptionParser::printOptionDescriptions() {
+  InvokeIfNonNull(Printf, "GWP-ASan: Available options:\n");
+  for (size_t I = 0; I < NumberOfOptions; ++I)
+    InvokeIfNonNull(Printf, "\t%s\n\t\t- %s\n", Options[I].Name,
+                    Options[I].Desc);
+}
+
+bool isSeparator(char C) {
+  return C == ' ' || C == ',' || C == ':' || C == '\n' || C == '\t' ||
+         C == '\r';
+}
+
+bool isSeparatorOrNull(char C) { return !C || isSeparator(C); }
+
+void OptionParser::skipWhitespace() {
+  while (isSeparator(Buffer[Pos]))
+    ++Pos;
+}
+
+bool OptionParser::parseOption() {
+  const uintptr_t NameStart = Pos;
+  while (Buffer[Pos] != '=' && !isSeparatorOrNull(Buffer[Pos]))
+    ++Pos;
+
+  const char *Name = Buffer + NameStart;
+  if (Buffer[Pos] != '=') {
+    InvokeIfNonNull(Printf, "GWP-ASan: Expected '=' when parsing option '%s'.",
+                    Name);
+    return false;
+  }
+  const uintptr_t 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) {
+      InvokeIfNonNull(Printf, "GWP-ASan: Unterminated string in option '%s'.",
+                      Name);
+      return false;
+    }
+    Value = Buffer + ValueStart + 1;
+    ++Pos; // consume the closing quote
+  } else {
+    while (!isSeparatorOrNull(Buffer[Pos]))
+      ++Pos;
+    Value = Buffer + ValueStart;
+  }
+
+  return setOptionToValue(Name, Value);
+}
+
+void OptionParser::parseOptions() {
+  while (true) {
+    skipWhitespace();
+    if (Buffer[Pos] == 0)
+      break;
+    if (!parseOption()) {
+      InvokeIfNonNull(Printf, "GWP-ASan: Options parsing failed.\n");
+      return;
+    }
+  }
+}
+
+void OptionParser::parseString(const char *S) {
+  if (!S)
+    return;
+  Buffer = S;
+  Pos = 0;
+  parseOptions();
+}
+
+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 OptionParser::setOptionToValue(const char *Name, const char *Value) {
+  for (size_t I = 0; I < NumberOfOptions; ++I) {
+    const uintptr_t Len = strlen(Options[I].Name);
+    if (strncmp(Name, Options[I].Name, Len) != 0 || Name[Len] != '=')
+      continue;
+    bool Ok = false;
+    switch (Options[I].Type) {
+    case OptionType::OT_bool:
+      Ok = parseBool(Value, reinterpret_cast<bool *>(Options[I].Var));
+      if (!Ok)
+        InvokeIfNonNull(
+            Printf, "GWP-ASan: Invalid boolean value '%s' for option '%s'.\n",
+            Value, Options[I].Name);
+      break;
+    case OptionType::OT_int:
+      char *ValueEnd;
+      *reinterpret_cast<int *>(Options[I].Var) =
+          static_cast<int>(strtol(Value, &ValueEnd, 10));
+      Ok =
+          *ValueEnd == '"' || *ValueEnd == '\'' || isSeparatorOrNull(*ValueEnd);
+      if (!Ok)
+        InvokeIfNonNull(
+            Printf, "GWP-ASan: Invalid integer value '%s' for option '%s'.\n",
+            Value, Options[I].Name);
+      break;
+    }
+    return Ok;
+  }
+
+  InvokeIfNonNull(Printf, "GWP-ASan: Unknown option '%s'.", Name);
+  return true;
+}
+
+void OptionParser::registerOption(const char *Name, const char *Desc,
+                                  OptionType Type, void *Var) {
+  assert(NumberOfOptions < MaxOptions &&
+         "GWP-ASan Error: Ran out of space for options.\n");
+  Options[NumberOfOptions].Name = Name;
+  Options[NumberOfOptions].Desc = Desc;
+  Options[NumberOfOptions].Type = Type;
+  Options[NumberOfOptions].Var = Var;
+  ++NumberOfOptions;
+}
+
+void registerGwpAsanOptions(OptionParser *parser,
+                            gwp_asan::options::Options *o) {
+#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description)                 \
+  parser->registerOption(#Name, Description, OptionType::OT_##Type, &o->Name);
+#include "gwp_asan/options.inc"
+#undef GWP_ASAN_OPTION
+}
+
+const char *getGwpAsanDefaultOptions() {
+  return (__gwp_asan_default_options) ? __gwp_asan_default_options() : "";
+}
+
+gwp_asan::options::Options *getOptionsInternal() {
+  static gwp_asan::options::Options GwpAsanOptions;
+  return &GwpAsanOptions;
+}
+} // anonymous namespace
+
+namespace gwp_asan {
+namespace options {
+
+void initOptions(const char *OptionsStr, Printf_t PrintfForWarnings) {
+  Options *o = getOptionsInternal();
+  o->setDefaults();
+
+  OptionParser Parser(PrintfForWarnings);
+  registerGwpAsanOptions(&Parser, o);
+
+  // Override from the weak function definition in this executable.
+  Parser.parseString(getGwpAsanDefaultOptions());
+
+  // Override from the provided options string.
+  Parser.parseString(OptionsStr);
+
+  if (o->help)
+    Parser.printOptionDescriptions();
+
+  if (!o->Enabled)
+    return;
+
+  if (o->MaxSimultaneousAllocations <= 0) {
+    InvokeIfNonNull(
+        PrintfForWarnings,
+        "GWP-ASan ERROR: MaxSimultaneousAllocations must be > 0 when GWP-ASan "
+        "is enabled.\n");
+    o->Enabled = false;
+  }
+  if (o->SampleRate <= 0) {
+    InvokeIfNonNull(
+        PrintfForWarnings,
+        "GWP-ASan ERROR: SampleRate must be > 0 when GWP-ASan is enabled.\n");
+    o->Enabled = false;
+  }
+}
+
+void initOptions(Printf_t PrintfForWarnings) {
+  initOptions(getenv("GWP_ASAN_OPTIONS"), PrintfForWarnings);
+}
+
+Options &getOptions() { return *getOptionsInternal(); }
+
+} // namespace options
+} // namespace gwp_asan