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 #include "test.h"
4 #include <errno.h>
5 #include <sys/types.h>
6 #include <sys/wait.h>
7
sleeper(void * p)8 static void *sleeper(void *p) {
9 sleep(1000); // not intended to exit during test
10 return 0;
11 }
12
nop(void * p)13 static void *nop(void *p) {
14 return 0;
15 }
16
main()17 int main() {
18 barrier_init(&barrier, 2);
19 pthread_t th;
20 pthread_create(&th, 0, sleeper, 0);
21 switch (fork()) {
22 default: // parent
23 while (wait(0) < 0) {}
24 break;
25 case 0: // child
26 {
27 pthread_t th2;
28 pthread_create(&th2, 0, nop, 0);
29 exit(0);
30 break;
31 }
32 case -1: // error
33 fprintf(stderr, "failed to fork (%d)\n", errno);
34 exit(1);
35 }
36 fprintf(stderr, "OK\n");
37 }
38
39 // CHECK-DIE: ThreadSanitizer: starting new threads after multi-threaded fork is not supported
40 // CHECK-DIE: OK
41
42 // CHECK-NODIE-NOT: ThreadSanitizer: starting new threads after multi-threaded fork is not supported
43 // CHECK-NODIE: OK
44
45