Dmitry Vyukov 8e93d4c996 tsan: fork runtime
Fork the current version of tsan runtime before commiting
rewrite of the runtime (D112603). The old runtime can be
enabled with TSAN_USE_OLD_RUNTIME option.
This is a temporal measure for emergencies and is required
for Chromium rollout (for context see http://crbug.com/1275581).
The old runtime is supposed to be deleted soon.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D115223
2021-12-09 07:28:26 +01:00

27 lines
1021 B
C++

//===-- tsan_preinit.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.
//
// Call __tsan_init at the very early stage of process startup.
//===----------------------------------------------------------------------===//
#include "sanitizer_common/sanitizer_internal_defs.h"
#include "tsan_interface.h"
#if SANITIZER_CAN_USE_PREINIT_ARRAY
// The symbol is called __local_tsan_preinit, because it's not intended to be
// exported.
// This code linked into the main executable when -fsanitize=thread is in
// the link flags. It can only use exported interface functions.
__attribute__((section(".preinit_array"), used))
void (*__local_tsan_preinit)(void) = __tsan_init;
#endif