1 // RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=50 %run %t 2>&1 | FileCheck %s
2 #include "test.h"
3 #include <errno.h>
4 #include <sys/types.h>
5 #include <sys/wait.h>
6
7 int counter;
8
incrementer(void * p)9 static void *incrementer(void *p) {
10 for (;;)
11 __sync_fetch_and_add(&counter, 1);
12 return 0;
13 }
14
main()15 int main() {
16 barrier_init(&barrier, 2);
17 pthread_t th1;
18 pthread_create(&th1, 0, incrementer, 0);
19 for (int i = 0; i < 10; i++) {
20 switch (fork()) {
21 default: // parent
22 while (wait(0) < 0) {}
23 fprintf(stderr, ".");
24 break;
25 case 0: // child
26 __sync_fetch_and_add(&counter, 1);
27 exit(0);
28 break;
29 case -1: // error
30 fprintf(stderr, "failed to fork (%d)\n", errno);
31 exit(1);
32 }
33 }
34 fprintf(stderr, "OK\n");
35 }
36
37 // CHECK: OK
38
39