test/tsan/tiny_race.c

   1 // RUN: %clang_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
   2 #include <pthread.h>
   3 #include <unistd.h>
   4
   5 int Global;
   6
   7 void *Thread1(void *x) {
   8   sleep(1);
   9   Global = 42;
  10   return x;
  11 }
  12
  13 int main() {
  14   pthread_t t;
  15   pthread_create(&t, 0, Thread1, 0);
  16   Global = 43;
  17   pthread_join(t, 0);
  18   return Global;
  19 }
  20
  21 // CHECK: WARNING: ThreadSanitizer: data race