1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include <pthread.h>
3#include <stdlib.h>
4#include <stdio.h>
5
6void *Thread1(void *p) {
7  *(int*)p = 42;
8  return 0;
9}
10
11void *Thread2(void *p) {
12  *(int*)p = 44;
13  return 0;
14}
15
16void *alloc() {
17  return malloc(99);
18}
19
20void *AllocThread(void* arg) {
21  return alloc();
22}
23
24int main() {
25  void *p = 0;
26  pthread_t t[2];
27  pthread_create(&t[0], 0, AllocThread, 0);
28  pthread_join(t[0], &p);
29  fprintf(stderr, "addr=%p\n", p);
30  pthread_create(&t[0], 0, Thread1, (char*)p + 16);
31  pthread_create(&t[1], 0, Thread2, (char*)p + 16);
32  pthread_join(t[0], 0);
33  pthread_join(t[1], 0);
34  return 0;
35}
36
37// CHECK: addr=[[ADDR:0x[0-9,a-f]+]]
38// CHECK: WARNING: ThreadSanitizer: data race
39// ...
40// CHECK: Location is heap block of size 99 at [[ADDR]] allocated by thread T1:
41// CHCEK:     #0 malloc
42// CHECK:     #{{1|2}} alloc
43// CHECK:     #{{2|3}} AllocThread
44// ...
45// CHECK:   Thread T1 (tid={{.*}}, finished) created by main thread at:
46// CHECK:     #0 pthread_create
47// CHECK:     #1 main
48