1*bcaeed49SFangrui Song // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2*bcaeed49SFangrui Song #include "test.h"
3*bcaeed49SFangrui Song
4*bcaeed49SFangrui Song // Ensure that we can restore a stack of a finished thread.
5*bcaeed49SFangrui Song
6*bcaeed49SFangrui Song int g_data;
7*bcaeed49SFangrui Song
foobar(int * p)8*bcaeed49SFangrui Song void __attribute__((noinline)) foobar(int *p) {
9*bcaeed49SFangrui Song *p = 42;
10*bcaeed49SFangrui Song }
11*bcaeed49SFangrui Song
Thread1(void * x)12*bcaeed49SFangrui Song void *Thread1(void *x) {
13*bcaeed49SFangrui Song foobar(&g_data);
14*bcaeed49SFangrui Song barrier_wait(&barrier);
15*bcaeed49SFangrui Song return NULL;
16*bcaeed49SFangrui Song }
17*bcaeed49SFangrui Song
Thread2(void * x)18*bcaeed49SFangrui Song void *Thread2(void *x) {
19*bcaeed49SFangrui Song barrier_wait(&barrier);
20*bcaeed49SFangrui Song sleep(1); // let the thread finish and exit
21*bcaeed49SFangrui Song g_data = 43;
22*bcaeed49SFangrui Song return NULL;
23*bcaeed49SFangrui Song }
24*bcaeed49SFangrui Song
main()25*bcaeed49SFangrui Song int main() {
26*bcaeed49SFangrui Song barrier_init(&barrier, 2);
27*bcaeed49SFangrui Song pthread_t t[2];
28*bcaeed49SFangrui Song pthread_create(&t[0], NULL, Thread1, NULL);
29*bcaeed49SFangrui Song pthread_create(&t[1], NULL, Thread2, NULL);
30*bcaeed49SFangrui Song pthread_join(t[0], NULL);
31*bcaeed49SFangrui Song pthread_join(t[1], NULL);
32*bcaeed49SFangrui Song return 0;
33*bcaeed49SFangrui Song }
34*bcaeed49SFangrui Song
35*bcaeed49SFangrui Song // CHECK: WARNING: ThreadSanitizer: data race
36*bcaeed49SFangrui Song // CHECK: Write of size 4 at {{.*}} by thread T2:
37*bcaeed49SFangrui Song // CHECK: Previous write of size 4 at {{.*}} by thread T1:
38*bcaeed49SFangrui Song // CHECK: #0 foobar
39*bcaeed49SFangrui Song // CHECK: #1 Thread1
40*bcaeed49SFangrui Song // CHECK: Thread T1 (tid={{.*}}, finished) created by main thread at:
41*bcaeed49SFangrui Song // CHECK: #0 pthread_create
42*bcaeed49SFangrui Song // CHECK: #1 main
43