compiler-rt/test/tsan/ignore_sync.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
   2 #include "test.h"
   3
   4 int Global;
   5 pthread_mutex_t Mutex = PTHREAD_MUTEX_INITIALIZER;
   6
   7 void *Thread(void *x) {
   8   AnnotateIgnoreSyncBegin(0, 0);
   9   pthread_mutex_lock(&Mutex);
  10   Global++;
  11   pthread_mutex_unlock(&Mutex);
  12   AnnotateIgnoreSyncEnd(0, 0);
  13   return 0;
  14 }
  15
  16 int main() {
  17   pthread_t t;
  18   pthread_create(&t, 0, Thread, 0);
  19   pthread_mutex_lock(&Mutex);
  20   Global++;
  21   pthread_mutex_unlock(&Mutex);
  22   pthread_join(t, 0);
  23 }
  24
  25 // CHECK: WARNING: ThreadSanitizer: data race
  26