41 lines · c
1// RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s2#include "test.h"3 4pthread_mutex_t Mtx;5int Global;6 7void *Thread2(void *x) {8 barrier_wait(&barrier);9// CHECK: WARNING: ThreadSanitizer: data race10// CHECK-NEXT: Atomic read of size 1 at {{.*}} by thread T2:11// CHECK-NEXT: #0 pthread_mutex_lock12// CHECK-NEXT: #1 Thread2{{.*}} {{.*}}race_on_mutex.c:[[@LINE+1]]{{(:3)?}} ({{.*}})13 pthread_mutex_lock(&Mtx);14 Global = 43;15 pthread_mutex_unlock(&Mtx);16 return NULL;17}18 19void *Thread1(void *x) {20// CHECK: Previous write of size {{[0-9]+}} at {{.*}} by thread T1:21// CHECK: #{{[0-9]+}} {{.*}}pthread_mutex_init {{.*}} ({{.*}})22// CHECK-NEXT: #{{[0-9]+}} Thread1{{.*}} {{.*}}race_on_mutex.c:[[@LINE+1]]{{(:3)?}} ({{.*}})23 pthread_mutex_init(&Mtx, 0);24 pthread_mutex_lock(&Mtx);25 Global = 42;26 pthread_mutex_unlock(&Mtx);27 barrier_wait(&barrier);28 return NULL;29}30 31int main() {32 barrier_init(&barrier, 2);33 pthread_t t[2];34 pthread_create(&t[0], NULL, Thread1, NULL);35 pthread_create(&t[1], NULL, Thread2, NULL);36 pthread_join(t[0], NULL);37 pthread_join(t[1], NULL);38 pthread_mutex_destroy(&Mtx);39 return 0;40}41