1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s 2#include "test.h" 3 4int X = 0; 5 6void MySleep() { 7 sleep(1); // the sleep that must appear in the report 8} 9 10void *Thread(void *p) { 11 barrier_wait(&barrier); 12 MySleep(); // Assume the main thread has done the write. 13 X = 42; 14 return 0; 15} 16 17int main() { 18 barrier_init(&barrier, 2); 19 pthread_t t; 20 pthread_create(&t, 0, Thread, 0); 21 X = 43; 22 barrier_wait(&barrier); 23 pthread_join(t, 0); 24 return 0; 25} 26 27// CHECK: WARNING: ThreadSanitizer: data race 28// ... 29// CHECK: As if synchronized via sleep: 30// CHECK-NEXT: #0 sleep 31// CHECK-NEXT: #1 MySleep 32// CHECK-NEXT: #2 Thread 33