llvm-project/compiler-rt/test/tsan/cond_cancel.c

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// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
// CHECK-NOT: WARNING
// CHECK: OK
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
pthread_mutex_t m;
pthread_cond_t c;
int x;
void *thr1(void *p) {
pthread_mutex_lock(&m);
pthread_cleanup_push((void(*)(void *arg))pthread_mutex_unlock, &m);
while (x == 0)
pthread_cond_wait(&c, &m);
pthread_cleanup_pop(1);
return 0;
}
int main() {
pthread_t th;
pthread_mutex_init(&m, 0);
pthread_cond_init(&c, 0);
pthread_create(&th, 0, thr1, 0);
sleep(1); // let it block on cond var
pthread_cancel(th);
pthread_join(th, 0);
pthread_mutex_lock(&m);
pthread_mutex_unlock(&m);
fprintf(stderr, "OK\n");
}