compiler-rt/test/tsan/simple_race.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
   2 #include "test.h"
   3
   4 int Global;
   5
   6 void *Thread1(void *x) {
   7   barrier_wait(&barrier);
   8   Global++;
   9   return NULL;
  10 }
  11
  12 void *Thread2(void *x) {
  13   Global--;
  14   barrier_wait(&barrier);
  15   return NULL;
  16 }
  17
  18 int main() {
  19   barrier_init(&barrier, 2);
  20   pthread_t t[2];
  21   pthread_create(&t[0], NULL, Thread1, NULL);
  22   pthread_create(&t[1], NULL, Thread2, NULL);
  23   pthread_join(t[0], NULL);
  24   pthread_join(t[1], NULL);
  25   return 0;
  26 }
  27
  28 // CHECK: WARNING: ThreadSanitizer: data race
  29 // CHECK: SUMMARY: ThreadSanitizer: data race{{.*}}Thread