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// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
// CHECK-NOT: unlock of unlocked mutex
// CHECK: ThreadSanitizer: data race
// CHECK: pthread_cond_signal
#include "test.h"
struct Ctx {
pthread_mutex_t m;
pthread_cond_t c;
bool done;
};
void *thr(void *p) {
Ctx *c = (Ctx*)p;
pthread_mutex_lock(&c->m);
c->done = true;
pthread_mutex_unlock(&c->m);
pthread_cond_signal(&c->c);
barrier_wait(&barrier);
return 0;
}
int main() {
barrier_init(&barrier, 2);
Ctx *c = new Ctx();
pthread_mutex_init(&c->m, 0);
pthread_cond_init(&c->c, 0);
pthread_t th;
pthread_create(&th, 0, thr, c);
pthread_mutex_lock(&c->m);
while (!c->done)
pthread_cond_wait(&c->c, &c->m);
pthread_mutex_unlock(&c->m);
// otherwise it can be reported as use-after-free
barrier_wait(&barrier);
delete c;
pthread_join(th, 0);
}
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