1 // RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s 2 #include <pthread.h> 3 #include <stdio.h> 4 #include <stddef.h> 5 #include <unistd.h> 6 7 pthread_barrier_t B; 8 int Global; 9 10 void *Thread1(void *x) { 11 if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD) 12 pthread_barrier_destroy(&B); 13 return NULL; 14 } 15 16 void *Thread2(void *x) { 17 if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD) 18 pthread_barrier_destroy(&B); 19 return NULL; 20 } 21 22 int main() { 23 pthread_barrier_init(&B, 0, 2); 24 pthread_t t; 25 pthread_create(&t, NULL, Thread1, NULL); 26 Thread2(0); 27 pthread_join(t, NULL); 28 return 0; 29 } 30 31 // CHECK: WARNING: ThreadSanitizer: data race 32
