compiler-rt/test/tsan/heap_race.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
   2 #include "test.h"
   3 #include <pthread.h>
   4 #include <stdio.h>
   5 #include <stddef.h>
   6
   7 void *Thread(void *a) {
   8   ((int*)a)[0]++;
   9   barrier_wait(&barrier);
  10   return NULL;
  11 }
  12
  13 int main() {
  14   barrier_init(&barrier, 2);
  15   int *p = new int(42);
  16   pthread_t t;
  17   pthread_create(&t, NULL, Thread, p);
  18   barrier_wait(&barrier);
  19   p[0]++;
  20   pthread_join(t, NULL);
  21   delete p;
  22 }
  23
  24 // CHECK: WARNING: ThreadSanitizer: data race