1*bcaeed49SFangrui Song // RUN: %clang_tsan -O1 %s -o %t && %env_tsan_opts=halt_on_error=1 %deflake %run %t | FileCheck %s 2*bcaeed49SFangrui Song #include "test.h" 3*bcaeed49SFangrui Song 4*bcaeed49SFangrui Song int X; 5*bcaeed49SFangrui Song Thread(void * x)6*bcaeed49SFangrui Songvoid *Thread(void *x) { 7*bcaeed49SFangrui Song barrier_wait(&barrier); 8*bcaeed49SFangrui Song X = 42; 9*bcaeed49SFangrui Song return 0; 10*bcaeed49SFangrui Song } 11*bcaeed49SFangrui Song main()12*bcaeed49SFangrui Songint main() { 13*bcaeed49SFangrui Song barrier_init(&barrier, 2); 14*bcaeed49SFangrui Song fprintf(stderr, "BEFORE\n"); 15*bcaeed49SFangrui Song pthread_t t; 16*bcaeed49SFangrui Song pthread_create(&t, 0, Thread, 0); 17*bcaeed49SFangrui Song X = 43; 18*bcaeed49SFangrui Song barrier_wait(&barrier); 19*bcaeed49SFangrui Song pthread_join(t, 0); 20*bcaeed49SFangrui Song fprintf(stderr, "AFTER\n"); 21*bcaeed49SFangrui Song return 0; 22*bcaeed49SFangrui Song } 23*bcaeed49SFangrui Song 24*bcaeed49SFangrui Song // CHECK: BEFORE 25*bcaeed49SFangrui Song // CHECK: WARNING: ThreadSanitizer: data race 26*bcaeed49SFangrui Song // CHECK-NOT: AFTER 27*bcaeed49SFangrui Song 28