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 #include "test.h"
6
Thread1(void * p)7 void *Thread1(void *p) {
8 *(int*)p = 42;
9 return 0;
10 }
11
Thread2(void * p)12 void *Thread2(void *p) {
13 *(int*)p = 44;
14 return 0;
15 }
16
alloc()17 void *alloc() __attribute__((noinline)) {
18 return malloc(99);
19 }
20
AllocThread(void * arg)21 void *AllocThread(void* arg) {
22 return alloc();
23 }
24
main()25 int main() {
26 void *p = 0;
27 pthread_t t[2];
28 pthread_create(&t[0], 0, AllocThread, 0);
29 pthread_join(t[0], &p);
30 print_address("addr=", 1, p);
31 pthread_create(&t[0], 0, Thread1, (char*)p + 16);
32 pthread_create(&t[1], 0, Thread2, (char*)p + 16);
33 pthread_join(t[0], 0);
34 pthread_join(t[1], 0);
35 return 0;
36 }
37
38 // CHECK: addr=[[ADDR:0x[0-9,a-f]+]]
39 // CHECK: WARNING: ThreadSanitizer: data race
40 // ...
41 // CHECK: Location is heap block of size 99 at [[ADDR]] allocated by thread T1:
42 // CHECK: #0 malloc
43 // CHECK: #{{1|2}} alloc
44 // CHECK: #{{2|3}} AllocThread
45 // ...
46 // CHECK: Thread T1 (tid={{.*}}, finished) created by main thread at:
47 // CHECK: #0 pthread_create
48 // CHECK: #1 main
49