1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s -check-prefix=CHECK-DIE
2 // RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=die_after_fork=0 %run %t 2>&1 | FileCheck %s -check-prefix=CHECK-NODIE
3 // UNSUPPORTED: darwin
4 #include "test.h"
5 #include <errno.h>
6 #include <sys/types.h>
7 #include <sys/wait.h>
8
sleeper(void * p)9 static void *sleeper(void *p) {
10 sleep(10); // not intended to exit during test
11 return 0;
12 }
13
nop(void * p)14 static void *nop(void *p) {
15 return 0;
16 }
17
main()18 int main() {
19 barrier_init(&barrier, 2);
20 pthread_t th;
21 pthread_create(&th, 0, sleeper, 0);
22 switch (fork()) {
23 default: // parent
24 while (wait(0) < 0) {}
25 break;
26 case 0: // child
27 {
28 pthread_t th2;
29 pthread_create(&th2, 0, nop, 0);
30 exit(0);
31 break;
32 }
33 case -1: // error
34 fprintf(stderr, "failed to fork (%d)\n", errno);
35 exit(1);
36 }
37 fprintf(stderr, "OK\n");
38 }
39
40 // CHECK-DIE: ThreadSanitizer: starting new threads after multi-threaded fork is not supported
41 // CHECK-DIE: OK
42
43 // CHECK-NODIE-NOT: ThreadSanitizer: starting new threads after multi-threaded fork is not supported
44 // CHECK-NODIE: OK
45
46