1 // RUN: %clangxx_tsan -O1 --std=c++11 %s -o %t && %run %t 2>&1 | FileCheck %s
2 #include "custom_mutex.h"
3 
4 #include <type_traits>
5 
6 // Test that the destruction events of a mutex are ignored when the
7 // annotations request this.
8 //
9 // Use after destruction is UB, but __tsan_mutex_linker_init and
10 // __tsan_mutex_not_static exist to support global variables of mutex type,
11 // which might be accessed during program shutdown after the class's destructor
12 // has run.
13 
main()14 int main() {
15   std::aligned_storage<sizeof(Mutex), alignof(Mutex)>::type mu1_store;
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   std::aligned_storage<sizeof(Mutex), alignof(Mutex)>::type mu2_store;
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: DONE
34