34 lines · cpp
1// RUN: %clangxx_tsan -O1 --std=c++17 %s -o %t && %run %t 2>&1 | FileCheck %s2#include "custom_mutex.h"3 4#include <cstddef>5 6// Test that the destruction events of a mutex are ignored when the7// annotations request this.8//9// Use after destruction is UB, but __tsan_mutex_linker_init and10// __tsan_mutex_not_static exist to support global variables of mutex type,11// which might be accessed during program shutdown after the class's destructor12// has run.13 14int main() {15 alignas(Mutex) std::byte mu1_store[sizeof(Mutex)];16 Mutex* mu1 = reinterpret_cast<Mutex*>(&mu1_store);17 new(&mu1_store) Mutex(false, __tsan_mutex_linker_init);18 mu1->Lock();19 mu1->~Mutex();20 mu1->Unlock();21 22 alignas(Mutex) std::byte mu2_store[sizeof(Mutex)];23 Mutex* mu2 = reinterpret_cast<Mutex*>(&mu2_store);24 new(&mu2_store) Mutex(false, 0, __tsan_mutex_not_static);25 mu2->Lock();26 mu2->~Mutex();27 mu2->Unlock();28 29 fprintf(stderr, "DONE\n");30 return 0;31}32 33// CHECK: DONE34