1*bcaeed49SFangrui Song // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2*bcaeed49SFangrui Song #include <pthread.h>
3*bcaeed49SFangrui Song #include <stdlib.h>
4*bcaeed49SFangrui Song #include <stdio.h>
5*bcaeed49SFangrui Song #include <sched.h>
6*bcaeed49SFangrui Song
7*bcaeed49SFangrui Song struct Cache {
8*bcaeed49SFangrui Song int x;
CacheCache9*bcaeed49SFangrui Song explicit Cache(int x)
10*bcaeed49SFangrui Song : x(x) {
11*bcaeed49SFangrui Song }
12*bcaeed49SFangrui Song };
13*bcaeed49SFangrui Song
AsyncInit(void * p)14*bcaeed49SFangrui Song void *AsyncInit(void *p) {
15*bcaeed49SFangrui Song return new Cache((int)(long)p);
16*bcaeed49SFangrui Song }
17*bcaeed49SFangrui Song
CreateCache()18*bcaeed49SFangrui Song Cache *CreateCache() {
19*bcaeed49SFangrui Song pthread_t t;
20*bcaeed49SFangrui Song pthread_create(&t, 0, AsyncInit, (void*)(long)rand());
21*bcaeed49SFangrui Song void *res;
22*bcaeed49SFangrui Song pthread_join(t, &res);
23*bcaeed49SFangrui Song return (Cache*)res;
24*bcaeed49SFangrui Song }
25*bcaeed49SFangrui Song
Thread1(void * x)26*bcaeed49SFangrui Song void *Thread1(void *x) {
27*bcaeed49SFangrui Song static Cache *c = CreateCache();
28*bcaeed49SFangrui Song if (c->x >= RAND_MAX)
29*bcaeed49SFangrui Song exit(1);
30*bcaeed49SFangrui Song return 0;
31*bcaeed49SFangrui Song }
32*bcaeed49SFangrui Song
main()33*bcaeed49SFangrui Song int main() {
34*bcaeed49SFangrui Song pthread_t t[2];
35*bcaeed49SFangrui Song pthread_create(&t[0], 0, Thread1, 0);
36*bcaeed49SFangrui Song pthread_create(&t[1], 0, Thread1, 0);
37*bcaeed49SFangrui Song pthread_join(t[0], 0);
38*bcaeed49SFangrui Song pthread_join(t[1], 0);
39*bcaeed49SFangrui Song fprintf(stderr, "PASS\n");
40*bcaeed49SFangrui Song }
41*bcaeed49SFangrui Song
42*bcaeed49SFangrui Song // CHECK-NOT: WARNING: ThreadSanitizer: data race
43