src/compiler-rt/test/tsan/ignore_free.cc

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
   2 #include "test.h"
   3
   4 extern "C" {
   5 void AnnotateIgnoreReadsBegin(const char *f, int l);
   6 void AnnotateIgnoreReadsEnd(const char *f, int l);
   7 void AnnotateIgnoreWritesBegin(const char *f, int l);
   8 void AnnotateIgnoreWritesEnd(const char *f, int l);
   9 }
  10
  11 void *Thread(void *p) {
  12   *(int*)p = 42;
  13   barrier_wait(&barrier);
  14   return 0;
  15 }
  16
  17 int main() {
  18   barrier_init(&barrier, 2);
  19   int *p = new int(0);
  20   pthread_t t;
  21   pthread_create(&t, 0, Thread, p);
  22   barrier_wait(&barrier);
  23   AnnotateIgnoreReadsBegin(__FILE__, __LINE__);
  24   AnnotateIgnoreWritesBegin(__FILE__, __LINE__);
  25   free(p);
  26   AnnotateIgnoreReadsEnd(__FILE__, __LINE__);
  27   AnnotateIgnoreWritesEnd(__FILE__, __LINE__);
  28   pthread_join(t, 0);
  29   fprintf(stderr, "OK\n");
  30   return 0;
  31 }
  32
  33 // CHECK-NOT: WARNING: ThreadSanitizer: data race
  34 // CHECK: OK