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// RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
// pthread barriers are not available on OS X
// UNSUPPORTED: darwin
#include <pthread.h>
#include <stdio.h>
#include <stddef.h>
#include <unistd.h>
pthread_barrier_t B;
int Global;
void *Thread1(void *x) {
if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD)
pthread_barrier_destroy(&B);
return NULL;
}
void *Thread2(void *x) {
if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD)
pthread_barrier_destroy(&B);
return NULL;
}
int main() {
pthread_barrier_init(&B, 0, 2);
pthread_t t;
pthread_create(&t, NULL, Thread1, NULL);
Thread2(0);
pthread_join(t, NULL);
return 0;
}
// CHECK: WARNING: ThreadSanitizer: data race
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