llvm/compiler-rt/lib/tsan/rtl/tsan_suppressions.cpp

//===-- tsan_suppressions.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 ThreadSanitizer (TSan), a race detector.
//
//===----------------------------------------------------------------------===//

#include "tsan_suppressions.h"

#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_libc.h"
#include "sanitizer_common/sanitizer_placement_new.h"
#include "sanitizer_common/sanitizer_suppressions.h"
#include "tsan_flags.h"
#include "tsan_mman.h"
#include "tsan_platform.h"
#include "tsan_rtl.h"

#if !SANITIZER_GO
// Suppressions for true/false positives in standard libraries.
static const char *const std_suppressions = …// Libstdc++ 4.4 has data races in std::string.
// See http://crbug.com/181502 for an example.
"race:^_M_rep$\n"
"race:^_M_is_leaked$\n"
// False positive when using std <thread>.
// Happens because we miss atomic synchronization in libstdc++.
// See http://llvm.org/bugs/show_bug.cgi?id=17066 for details.
"race:std::_Sp_counted_ptr_inplace<std::thread::_Impl\n";

// Can be overriden in frontend.
SANITIZER_WEAK_DEFAULT_IMPL
const char *__tsan_default_suppressions() { … }
#endif

namespace __tsan {

alignas(64) static char suppression_placeholder[sizeof(SuppressionContext)];
static SuppressionContext *suppression_ctx = …;
static const char *kSuppressionTypes[] = …;

void InitializeSuppressions() { … }

SuppressionContext *Suppressions() { … }

static const char *conv(ReportType typ) { … }

static uptr IsSuppressed(const char *stype, const AddressInfo &info,
    Suppression **sp) { … }

uptr IsSuppressed(ReportType typ, const ReportStack *stack, Suppression **sp) { … }

uptr IsSuppressed(ReportType typ, const ReportLocation *loc, Suppression **sp) { … }

void PrintMatchedSuppressions() { … }
}  // namespace __tsan