xref: /llvm-project/compiler-rt/test/tsan/stack_race2.cpp (revision bcaeed49cb063de9fe504aa29e1cadff8a7be710) 
1*bcaeed49SFangrui Song // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2*bcaeed49SFangrui Song #include "test.h"
3*bcaeed49SFangrui Song 
Thread2(void * a)4*bcaeed49SFangrui Song void *Thread2(void *a) {
5*bcaeed49SFangrui Song   barrier_wait(&barrier);
6*bcaeed49SFangrui Song   *(int*)a = 43;
7*bcaeed49SFangrui Song   return 0;
8*bcaeed49SFangrui Song }
9*bcaeed49SFangrui Song 
Thread(void * a)10*bcaeed49SFangrui Song void *Thread(void *a) {
11*bcaeed49SFangrui Song   int Var = 42;
12*bcaeed49SFangrui Song   pthread_t t;
13*bcaeed49SFangrui Song   pthread_create(&t, 0, Thread2, &Var);
14*bcaeed49SFangrui Song   Var = 42;
15*bcaeed49SFangrui Song   barrier_wait(&barrier);
16*bcaeed49SFangrui Song   pthread_join(t, 0);
17*bcaeed49SFangrui Song   return 0;
18*bcaeed49SFangrui Song }
19*bcaeed49SFangrui Song 
main()20*bcaeed49SFangrui Song int main() {
21*bcaeed49SFangrui Song   barrier_init(&barrier, 2);
22*bcaeed49SFangrui Song   pthread_t t;
23*bcaeed49SFangrui Song   pthread_create(&t, 0, Thread, 0);
24*bcaeed49SFangrui Song   pthread_join(t, 0);
25*bcaeed49SFangrui Song }
26*bcaeed49SFangrui Song 
27*bcaeed49SFangrui Song // CHECK: WARNING: ThreadSanitizer: data race
28*bcaeed49SFangrui Song // CHECK:   Location is stack of thread T1.
29*bcaeed49SFangrui Song 
30