1 // RUN: %clangxx_tsan -O1 %s -o %t
2 // RUN: %deflake %env_tsan_opts=force_background_thread=0:verbosity=1:memory_limit_mb=1000 %run %t 2>&1 | FileCheck %s --implicit-check-not "memory flush check"
3 // RUN: %deflake %env_tsan_opts=force_background_thread=1:verbosity=1:memory_limit_mb=1000 %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,THREAD
4 // RUN: %deflake %env_tsan_opts=force_background_thread=0:verbosity=1:memory_limit_mb=1000 %run %t 1 2>&1 | FileCheck %s --check-prefixes=CHECK,THREAD
5 #include "test.h"
6 
7 void *Thread(void *a) { return nullptr; }
8 
9 int main(int argc, char *argv[]) {
10   if (argc > 1) {
11     pthread_t t;
12     pthread_create(&t, nullptr, Thread, nullptr);
13     void *p;
14     pthread_join(t, &p);
15   }
16   sleep(3);
17   return 1;
18 }
19 
20 // CHECK: Running under ThreadSanitizer
21 // THREAD: ThreadSanitizer: memory flush check
22