compiler-rt/test/tsan/benign_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 int WTFGlobal;
   6
   7 void *Thread(void *x) {
   8   Global = 42;
   9   WTFGlobal = 142;
  10   barrier_wait(&barrier);
  11   return 0;
  12 }
  13
  14 int main() {
  15   barrier_init(&barrier, 2);
  16   ANNOTATE_BENIGN_RACE(Global);
  17   WTF_ANNOTATE_BENIGN_RACE(WTFGlobal);
  18   pthread_t t;
  19   pthread_create(&t, 0, Thread, 0);
  20   barrier_wait(&barrier);
  21   Global = 43;
  22   WTFGlobal = 143;
  23   pthread_join(t, 0);
  24   fprintf(stderr, "OK\n");
  25 }
  26
  27 // CHECK-NOT: WARNING: ThreadSanitizer: data race