| 1 | // RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s |
|---|---|
| 2 | |
| 3 | #include <pthread.h> |
| 4 | #include <stdio.h> |
| 5 | #include <stdlib.h> |
| 6 | #include <setjmp.h> |
| 7 | |
| 8 | void bar(jmp_buf env) { |
| 9 | volatile int x = 42; |
| 10 | longjmp(env: env, val: 42); |
| 11 | x++; |
| 12 | } |
| 13 | |
| 14 | void foo(jmp_buf env) { |
| 15 | volatile int x = 42; |
| 16 | bar(env); |
| 17 | x++; |
| 18 | } |
| 19 | |
| 20 | __attribute__((noinline)) void badguy() { |
| 21 | pthread_mutex_t mtx; |
| 22 | pthread_mutex_init(mutex: &mtx, mutexattr: 0); |
| 23 | pthread_mutex_lock(mutex: &mtx); |
| 24 | pthread_mutex_destroy(mutex: &mtx); |
| 25 | } |
| 26 | |
| 27 | __attribute__((noinline)) void mymain() { |
| 28 | jmp_buf env; |
| 29 | if (setjmp(env) == 42) { |
| 30 | badguy(); |
| 31 | return; |
| 32 | } |
| 33 | foo(env); |
| 34 | fprintf(stderr, format: "FAILED\n"); |
| 35 | } |
| 36 | |
| 37 | int main() { |
| 38 | volatile int x = 42; |
| 39 | mymain(); |
| 40 | return x; |
| 41 | } |
| 42 | |
| 43 | // CHECK-NOT: FAILED |
| 44 | // CHECK: WARNING: ThreadSanitizer: destroy of a locked mutex |
| 45 | // CHECK: #0 pthread_mutex_destroy |
| 46 | // CHECK: #1 badguy |
| 47 | // CHECK: #2 mymain |
| 48 | // CHECK: #3 main |
| 49 | |
| 50 |