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#include <stdint.h>
#include <assert.h>
#include <pthread.h>
_Atomic uintptr_t cleanup_val = 0;
static void cleanup(void *arg) {
cleanup_val = (uintptr_t)arg;
}
static void *worker(void *arg) {
(void)arg;
pthread_cleanup_push(cleanup, (void *)1);
pthread_cleanup_push(cleanup, (void *)2);
pthread_cleanup_push(cleanup, (void *)3);
pthread_cleanup_push(cleanup, (void *)4);
pthread_cleanup_pop(1);
assert(cleanup_val == 4);
pthread_cleanup_pop(0);
assert(cleanup_val == 4);
pthread_exit(NULL);
pthread_cleanup_pop(0);
pthread_cleanup_pop(0);
return NULL;
}
int main() {
pthread_t thread;
assert(!pthread_create(&thread, NULL, &worker, NULL));
assert(!pthread_join(thread, NULL));
assert(cleanup_val == 1);
return 0;
}
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