| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
|---|---|
| 2 | // CHECK-NOT: unlock of unlocked mutex |
| 3 | // CHECK: ThreadSanitizer: data race |
| 4 | // CHECK: pthread_cond_signal |
| 5 | |
| 6 | #include "test.h" |
| 7 | |
| 8 | struct Ctx { |
| 9 | pthread_mutex_t m; |
| 10 | pthread_cond_t c; |
| 11 | bool done; |
| 12 | }; |
| 13 | |
| 14 | void *thr(void *p) { |
| 15 | Ctx *c = (Ctx*)p; |
| 16 | pthread_mutex_lock(mutex: &c->m); |
| 17 | c->done = true; |
| 18 | pthread_mutex_unlock(mutex: &c->m); |
| 19 | pthread_cond_signal(cond: &c->c); |
| 20 | barrier_wait(barrier: &barrier); |
| 21 | return 0; |
| 22 | } |
| 23 | |
| 24 | int main() { |
| 25 | barrier_init(barrier: &barrier, count: 2); |
| 26 | Ctx *c = new Ctx(); |
| 27 | pthread_mutex_init(mutex: &c->m, mutexattr: 0); |
| 28 | pthread_cond_init(cond: &c->c, cond_attr: 0); |
| 29 | pthread_t th; |
| 30 | pthread_create(newthread: &th, attr: 0, start_routine: thr, arg: c); |
| 31 | pthread_mutex_lock(mutex: &c->m); |
| 32 | while (!c->done) |
| 33 | pthread_cond_wait(cond: &c->c, mutex: &c->m); |
| 34 | pthread_mutex_unlock(mutex: &c->m); |
| 35 | // otherwise it can be reported as use-after-free |
| 36 | barrier_wait(barrier: &barrier); |
| 37 | delete c; |
| 38 | pthread_join(th: th, thread_return: 0); |
| 39 | } |
| 40 |