File: tsd_dtor_leak.cc

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16.1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,388 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (42 lines) | stat: -rw-r--r-- 1,123 bytes parent folder | download | duplicates (33)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
// Regression test for a leak in tsd:
// https://code.google.com/p/address-sanitizer/issues/detail?id=233
// RUN: %clangxx_asan -O1 %s -pthread -o %t
// RUN: %env_asan_opts=quarantine_size_mb=0 %run %t
// XFAIL: x86_64-netbsd
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <sanitizer/allocator_interface.h>

static pthread_key_t tsd_key;

void *Thread(void *) {
  pthread_setspecific(tsd_key, malloc(10));
  return 0;
}

static volatile void *v;

void Dtor(void *tsd) {
  v = malloc(10000);
  free(tsd);
  free((void*)v);  // The bug was that this was leaking.
}

int main() {
  assert(0 == pthread_key_create(&tsd_key, Dtor));
  pthread_t t;
  for (int i = 0; i < 3; i++) {
    pthread_create(&t, 0, Thread, 0);
    pthread_join(t, 0);
  }
  size_t old_heap_size = __sanitizer_get_heap_size();
  for (int i = 0; i < 10; i++) {
    pthread_create(&t, 0, Thread, 0);
    pthread_join(t, 0);
    size_t new_heap_size = __sanitizer_get_heap_size();
    fprintf(stderr, "heap size: new: %zd old: %zd\n", new_heap_size, old_heap_size);
    assert(old_heap_size == new_heap_size);
  }
}