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1// RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s2 3// pthread barriers are not available on OS X4// UNSUPPORTED: darwin5 6#include <pthread.h>7#include <stdio.h>8#include <stddef.h>9#include <unistd.h>10 11pthread_barrier_t B;12int Global;13 14void *Thread1(void *x) {15 if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD)16 pthread_barrier_destroy(&B);17 return NULL;18}19 20void *Thread2(void *x) {21 if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD)22 pthread_barrier_destroy(&B);23 return NULL;24}25 26int main() {27 pthread_barrier_init(&B, 0, 2);28 pthread_t t;29 pthread_create(&t, NULL, Thread1, NULL);30 Thread2(0);31 pthread_join(t, NULL);32 return 0;33}34 35// CHECK: WARNING: ThreadSanitizer: data race36