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| // Regression test for http://llvm.org/bugs/show_bug.cgi?id=21621
// This test relies on timing between threads, so any failures will be flaky.
// RUN: %clangxx_lsan %s -o %t
// RUN: %env_lsan_opts="log_pointers=1:log_threads=1" %run %t
#include <assert.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
bool flag = false;
void *func(void *arg) {
// This mutex will never be grabbed.
fprintf(stderr, "entered func()\n");
pthread_mutex_lock(&mutex);
free(arg);
pthread_mutex_unlock(&mutex);
return 0;
}
void create_detached_thread() {
pthread_t thread_id;
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
void *arg = malloc(1337);
assert(arg);
// This mutex is never unlocked by the main thread.
pthread_mutex_lock(&mutex);
int res = pthread_create(&thread_id, &attr, func, arg);
assert(res == 0);
}
int main() {
create_detached_thread();
}
|