test/tsan/sleep_sync2.cc

   1 // RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
   2 #include <pthread.h>
   3 #include <unistd.h>
   4
   5 int X = 0;
   6
   7 void *Thread(void *p) {
   8   X = 42;
   9   return 0;
  10 }
  11
  12 int main() {
  13   pthread_t t;
  14   sleep(1);
  15   pthread_create(&t, 0, Thread, 0);
  16   X = 43;
  17   pthread_join(t, 0);
  18   return 0;
  19 }
  20
  21 // CHECK: WARNING: ThreadSanitizer: data race
  22 // CHECK-NOT: As if synchronized via sleep