1// RUN: %clangxx_asan -O0 %s -pthread -o %t && not %run %t 2>&1 | FileCheck %s
2// RUN: %clangxx_asan -O1 %s -pthread -o %t && not %run %t 2>&1 | FileCheck %s
3// RUN: %clangxx_asan -O2 %s -pthread -o %t && not %run %t 2>&1 | FileCheck %s
4// RUN: %clangxx_asan -O3 %s -pthread -o %t && not %run %t 2>&1 | FileCheck %s
5// REQUIRES: stable-runtime
6
7#include <pthread.h>
8
9int *x;
10
11void *AllocThread(void *arg) {
12 x = new int;
13 *x = 42;
14 return NULL;
15}
16
17void *FreeThread(void *arg) {
18 delete x;
19 return NULL;
20}
21
22void *AccessThread(void *arg) {
23 *x = 43; // BOOM
24 return NULL;
25}
26
27typedef void* (*callback_type)(void* arg);
28
29void *RunnerThread(void *function) {
30 pthread_t thread;
31 pthread_create(newthread: &thread, NULL, start_routine: (callback_type)function, NULL);
32 pthread_join(th: thread, NULL);
33 return NULL;
34}
35
36void RunThread(callback_type function) {
37 pthread_t runner;
38 pthread_create(newthread: &runner, NULL, start_routine: RunnerThread, arg: (void*)function);
39 pthread_join(th: runner, NULL);
40}
41
42int main(int argc, char *argv[]) {
43 RunThread(function: AllocThread);
44 RunThread(function: FreeThread);
45 RunThread(function: AccessThread);
46 return (x != 0);
47}
48
49// CHECK: AddressSanitizer: heap-use-after-free
50// CHECK: WRITE of size 4 at 0x{{.*}} thread T[[ACCESS_THREAD:[0-9]+]]
51// CHECK: freed by thread T[[FREE_THREAD:[0-9]+]] here:
52// CHECK: previously allocated by thread T[[ALLOC_THREAD:[0-9]+]] here:
53// CHECK: Thread T[[ACCESS_THREAD]] created by T[[ACCESS_RUNNER:[0-9]+]] here:
54// CHECK: Thread T[[ACCESS_RUNNER]] created by T0 here:
55// CHECK: Thread T[[FREE_THREAD]] created by T[[FREE_RUNNER:[0-9]+]] here:
56// CHECK: Thread T[[FREE_RUNNER]] created by T0 here:
57// CHECK: Thread T[[ALLOC_THREAD]] created by T[[ALLOC_RUNNER:[0-9]+]] here:
58// CHECK: Thread T[[ALLOC_RUNNER]] created by T0 here:
59

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