compiler-rt/test/tsan/ignore_race.cpp

   1 // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
   2 #include "test.h"
   3
   4 int Global;
   5
   6 void *Thread(void *x) {
   7   AnnotateIgnoreWritesBegin(__FILE__, __LINE__);
   8   AnnotateIgnoreReadsBegin(__FILE__, __LINE__);
   9   Global = 42;
  10   AnnotateIgnoreReadsEnd(__FILE__, __LINE__);
  11   AnnotateIgnoreWritesEnd(__FILE__, __LINE__);
  12   barrier_wait(&barrier);
  13   return 0;
  14 }
  15
  16 int main() {
  17   barrier_init(&barrier, 2);
  18   pthread_t t;
  19   pthread_create(&t, 0, Thread, 0);
  20   barrier_wait(&barrier);
  21   Global = 43;
  22   pthread_join(t, 0);
  23   fprintf(stderr, "OK\n");
  24 }
  25
  26 // CHECK-NOT: WARNING: ThreadSanitizer: data race