1// Test that dynamically allocated thread-specific storage is included in the root set.
2// RUN: %clangxx_lsan %s -o %t
3// RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=0:use_tls=0" not %run %t 2>&1 | FileCheck %s
4// RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=0:use_tls=1" %run %t 2>&1
5// RUN: %env_lsan_opts="" %run %t 2>&1
6
7// Investigate why it does not fail with use_tls=0
8// UNSUPPORTED: arm-linux || armhf-linux
9
10#include <assert.h>
11#include <pthread.h>
12#include <stdio.h>
13#include <stdlib.h>
14#include "sanitizer_common/print_address.h"
15
16// From glibc: this many keys are stored in the thread descriptor directly.
17const unsigned PTHREAD_KEY_2NDLEVEL_SIZE = 32;
18
19int main() {
20 static const unsigned kDummyKeysCount = PTHREAD_KEY_2NDLEVEL_SIZE;
21 int res;
22 pthread_key_t dummy_keys[kDummyKeysCount];
23 for (unsigned i = 0; i < kDummyKeysCount; i++) {
24 res = pthread_key_create(key: &dummy_keys[i], NULL);
25 assert(res == 0);
26 }
27 pthread_key_t key;
28 res = pthread_key_create(key: &key, NULL);
29 assert(key >= PTHREAD_KEY_2NDLEVEL_SIZE);
30 assert(res == 0);
31 void *p = malloc(size: 1337);
32 res = pthread_setspecific(key: key, pointer: p);
33 assert(res == 0);
34 print_address("Test alloc: ", 1, p);
35 return 0;
36}
37// CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
38// CHECK: LeakSanitizer: detected memory leaks
39// CHECK: [[ADDR]] (1337 bytes)
40// CHECK: SUMMARY: {{.*}}Sanitizer:
41

source code of compiler-rt/test/lsan/TestCases/Linux/use_tls_pthread_specific_dynamic.cpp