File: default_options.cpp

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// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include <pthread.h>
#include <sanitizer/tsan_interface.h>
#include <stdio.h>

#if (__APPLE__)
__attribute__((weak))
#endif
extern "C" const char *__tsan_default_options() {
  return "report_bugs=0";
}

int Global;

void *Thread1(void *x) {
  Global = 42;
  return NULL;
}

void *Thread2(void *x) {
  Global = 43;
  return NULL;
}

int main() {
  pthread_t t[2];
  pthread_create(&t[0], NULL, Thread1, NULL);
  pthread_create(&t[1], NULL, Thread2, NULL);
  pthread_join(t[0], NULL);
  pthread_join(t[1], NULL);
  fprintf(stderr, "DONE\n");
  return 0;
}

// CHECK-NOT: WARNING: ThreadSanitizer: data race
// CHECK: DONE