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(&thread, NULL, (callback_type)function, NULL);
32  pthread_join(thread, NULL);
33  return NULL;
34}
35
36void RunThread(callback_type function) {
37  pthread_t runner;
38  pthread_create(&runner, NULL, RunnerThread, (void*)function);
39  pthread_join(runner, NULL);
40}
41
42int main(int argc, char *argv[]) {
43  RunThread(AllocThread);
44  RunThread(FreeThread);
45  RunThread(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