1// RUN: %clang_tsan -O1 %s -o %t && %env_tsan_opts=halt_on_error=1 %deflake %run %t | FileCheck %s
2#include "test.h"
3
4int X;
5
6void *Thread(void *x) {
7 barrier_wait(barrier: &barrier);
8 X = 42;
9 return 0;
10}
11
12int main() {
13 barrier_init(barrier: &barrier, count: 2);
14 fprintf(stderr, format: "BEFORE\n");
15 pthread_t t;
16 pthread_create(newthread: &t, attr: 0, start_routine: Thread, arg: 0);
17 X = 43;
18 barrier_wait(barrier: &barrier);
19 pthread_join(th: t, thread_return: 0);
20 fprintf(stderr, format: "AFTER\n");
21 return 0;
22}
23
24// CHECK: BEFORE
25// CHECK: WARNING: ThreadSanitizer: data race
26// CHECK-NOT: AFTER
27
28

source code of compiler-rt/test/tsan/halt_on_error.cpp