gcc/testsuite/c-c++-common/tsan/sleep_sync.c

   1 /* { dg-shouldfail "tsan" } */
   2
   3 #include <pthread.h>
   4 #include <unistd.h>
   5
   6 int X = 0;
   7
   8 void MySleep() {
   9   sleep(1);
  10 }
  11
  12 void *Thread(void *p) {
  13   MySleep();  // Assume the main thread has done the write.
  14   X = 42;
  15   return 0;
  16 }
  17
  18 int main() {
  19   pthread_t t;
  20   pthread_create(&t, 0, Thread, 0);
  21   X = 43;
  22   pthread_join(t, 0);
  23   return 0;
  24 }
  25
  26 /* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r).*} */
  27 /* { dg-output "  As if synchronized via sleep:(\n|\r\n|\r)} */
  28 /* { dg-output "         #0 sleep.*"*} */
  29 /* { dg-output "         #1 MySleep.*"*} */
  30 /* { dg-output "         #2 Thread.*"*} */