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
Thread1(void * p)6 void *Thread1(void *p) {
7 *(int*)p = 42;
8 return 0;
9 }
10
Thread2(void * p)11 void *Thread2(void *p) {
12 *(int*)p = 44;
13 return 0;
14 }
15
alloc()16 void *alloc() {
17 return malloc(99);
18 }
19
AllocThread(void * arg)20 void *AllocThread(void* arg) {
21 return alloc();
22 }
23
main()24 int 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