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: %env_asan_opts=quarantine_size_mb=0 %run %t
5// XFAIL: x86_64-netbsd
6#include <pthread.h>
7#include <stdio.h>
8#include <stdlib.h>
9#include <assert.h>
10#include <sanitizer/allocator_interface.h>
11
12static pthread_key_t tsd_key;
13
14void *Thread(void *) {
15 pthread_setspecific(key: tsd_key, pointer: malloc(size: 10));
16 return 0;
17}
18
19static volatile void *v;
20
21void Dtor(void *tsd) {
22 v = malloc(size: 10000);
23 free(ptr: tsd);
24 free(ptr: (void*)v); // The bug was that this was leaking.
25}
26
27int main() {
28 assert(0 == pthread_key_create(&tsd_key, Dtor));
29 pthread_t t;
30 for (int i = 0; i < 3; i++) {
31 pthread_create(newthread: &t, attr: 0, start_routine: Thread, arg: 0);
32 pthread_join(th: t, thread_return: 0);
33 }
34 size_t old_heap_size = __sanitizer_get_heap_size();
35 for (int i = 0; i < 10; i++) {
36 pthread_create(newthread: &t, attr: 0, start_routine: Thread, arg: 0);
37 pthread_join(th: t, thread_return: 0);
38 size_t new_heap_size = __sanitizer_get_heap_size();
39 fprintf(stderr, format: "heap size: new: %zd old: %zd\n", new_heap_size, old_heap_size);
40 assert(old_heap_size == new_heap_size);
41 }
42}
43

source code of compiler-rt/test/asan/TestCases/Posix/tsd_dtor_leak.cpp