test/tsan/simple_race.cc

   1 // RUN: %clangxx_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
   2 #include <pthread.h>
   3 #include <stdio.h>
   4
   5 int Global;
   6
   7 void *Thread1(void *x) {
   8   Global++;
   9   return NULL;
  10 }
  11
  12 void *Thread2(void *x) {
  13   Global--;
  14   return NULL;
  15 }
  16
  17 int main() {
  18   pthread_t t[2];
  19   pthread_create(&t[0], NULL, Thread1, NULL);
  20   pthread_create(&t[1], NULL, Thread2, NULL);
  21   pthread_join(t[0], NULL);
  22   pthread_join(t[1], NULL);
  23 }
  24
  25 // CHECK: WARNING: ThreadSanitizer: data race
  26 // CHECK: SUMMARY: ThreadSanitizer: data race{{.*}}Thread