longjmp3.cc revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
1// RUN: %clang_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
2#include <pthread.h>
3#include <stdio.h>
4#include <stdlib.h>
5#include <setjmp.h>
6
7void bar(jmp_buf env) {
8  volatile int x = 42;
9  longjmp(env, 42);
10  x++;
11}
12
13void foo(jmp_buf env) {
14  volatile int x = 42;
15  bar(env);
16  x++;
17}
18
19void badguy() {
20  pthread_mutex_t mtx;
21  pthread_mutex_init(&mtx, 0);
22  pthread_mutex_lock(&mtx);
23  pthread_mutex_destroy(&mtx);
24}
25
26void mymain() {
27  jmp_buf env;
28  if (setjmp(env) == 42) {
29    badguy();
30    return;
31  }
32  foo(env);
33  printf("FAILED\n");
34}
35
36int main() {
37  volatile int x = 42;
38  mymain();
39  return x;
40}
41
42// CHECK-NOT: FAILED
43// CHECK: WARNING: ThreadSanitizer: destroy of a locked mutex
44// CHECK:   #0 pthread_mutex_destroy
45// CHECK:   #1 badguy
46// CHECK:   #2 mymain
47// CHECK:   #3 main
48
49