xref: /llvm-project/compiler-rt/test/tsan/malloc_stack.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 
4*bcaeed49SFangrui Song _Atomic(int*) p;
5*bcaeed49SFangrui Song 
thr(void * a)6*bcaeed49SFangrui Song void *thr(void *a) {
7*bcaeed49SFangrui Song   barrier_wait(&barrier);
8*bcaeed49SFangrui Song   int *pp = __c11_atomic_load(&p, __ATOMIC_RELAXED);
9*bcaeed49SFangrui Song   *pp = 42;
10*bcaeed49SFangrui Song   return 0;
11*bcaeed49SFangrui Song }
12*bcaeed49SFangrui Song 
main()13*bcaeed49SFangrui Song int main() {
14*bcaeed49SFangrui Song   barrier_init(&barrier, 2);
15*bcaeed49SFangrui Song   pthread_t th;
16*bcaeed49SFangrui Song   pthread_create(&th, 0, thr, p);
17*bcaeed49SFangrui Song   __c11_atomic_store(&p, new int, __ATOMIC_RELAXED);
18*bcaeed49SFangrui Song   barrier_wait(&barrier);
19*bcaeed49SFangrui Song   pthread_join(th, 0);
20*bcaeed49SFangrui Song }
21*bcaeed49SFangrui Song 
22*bcaeed49SFangrui Song // CHECK: data race
23*bcaeed49SFangrui Song // CHECK:   Previous write
24*bcaeed49SFangrui Song // CHECK:     #0 operator new
25*bcaeed49SFangrui Song // CHECK:   Location is heap block
26*bcaeed49SFangrui Song // CHECK:     #0 operator new
27