1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include "test.h"
3
4// Ensure that we can restore a stack of a finished thread.
5
6int g_data;
7
8void __attribute__((noinline)) foobar(int *p) {
9 *p = 42;
10}
11
12void *Thread1(void *x) {
13 foobar(&g_data);
14 barrier_wait(&barrier);
15 return NULL;
16}
17
18void *Thread2(void *x) {
19 barrier_wait(&barrier);
20 sleep(1); // let the thread finish and exit
21 g_data = 43;
22 return NULL;
23}
24
25int main() {
26 barrier_init(&barrier, 2);
27 pthread_t t[2];
28 pthread_create(&t[0], NULL, Thread1, NULL);
29 pthread_create(&t[1], NULL, Thread2, NULL);
30 pthread_join(t[0], NULL);
31 pthread_join(t[1], NULL);
32 return 0;
33}
34
35// CHECK: WARNING: ThreadSanitizer: data race
36// CHECK: Write of size 4 at {{.*}} by thread T2:
37// CHECK: Previous write of size 4 at {{.*}} by thread T1:
38// CHECK: #0 foobar
39// CHECK: #1 Thread1
40// CHECK: Thread T1 (tid={{.*}}, finished) created by main thread at:
41// CHECK: #0 pthread_create
42// CHECK: #1 main
43