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