forked from OSchip/llvm-project
30 lines
621 B
C++
30 lines
621 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
|
|
#include "test.h"
|
|
|
|
int Global;
|
|
|
|
void *Thread1(void *x) {
|
|
barrier_wait(&barrier);
|
|
__atomic_fetch_add(&Global, 1, __ATOMIC_RELAXED);
|
|
return NULL;
|
|
}
|
|
|
|
void *Thread2(void *x) {
|
|
Global++;
|
|
barrier_wait(&barrier);
|
|
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);
|
|
}
|
|
|
|
// CHECK: WARNING: ThreadSanitizer: data race
|
|
// CHECK: Atomic write of size 4
|
|
// CHECK: #0 Thread1
|