1// Regression test for a leak in tsd:
2// https://code.google.com/p/address-sanitizer/issues/detail?id=233
3// RUN: %clangxx_asan -O1 %s -pthread -o %t
4// RUN: ASAN_OPTIONS=quarantine_size=1 %run %t
5#include <pthread.h>
6#include <stdio.h>
7#include <stdlib.h>
8#include <assert.h>
9#include <sanitizer/allocator_interface.h>
10
11static pthread_key_t tsd_key;
12
13void *Thread(void *) {
14  pthread_setspecific(tsd_key, malloc(10));
15  return 0;
16}
17
18static volatile void *v;
19
20void Dtor(void *tsd) {
21  v = malloc(10000);
22  free(tsd);
23  free((void*)v);  // The bug was that this was leaking.
24}
25
26int main() {
27  assert(0 == pthread_key_create(&tsd_key, Dtor));
28  size_t old_heap_size = 0;
29  for (int i = 0; i < 10; i++) {
30    pthread_t t;
31    pthread_create(&t, 0, Thread, 0);
32    pthread_join(t, 0);
33    size_t new_heap_size = __sanitizer_get_heap_size();
34    fprintf(stderr, "heap size: new: %zd old: %zd\n", new_heap_size, old_heap_size);
35    if (old_heap_size)
36      assert(old_heap_size == new_heap_size);
37    old_heap_size = new_heap_size;
38  }
39}
40