1 // RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s 2 #include <pthread.h> 3 #include <unistd.h> 4 5 int X = 0; 6 7 void MySleep() { 8 sleep(1); 9 } 10 11 void *Thread(void *p) { 12 MySleep(); // Assume the main thread has done the write. 13 X = 42; 14 return 0; 15 } 16 17 int main() { 18 pthread_t t; 19 pthread_create(&t, 0, Thread, 0); 20 X = 43; 21 pthread_join(t, 0); 22 return 0; 23 } 24 25 // CHECK: WARNING: ThreadSanitizer: data race 26 // ... 27 // CHECK: As if synchronized via sleep: 28 // CHECK-NEXT: #0 sleep 29 // CHECK-NEXT: #1 MySleep 30 // CHECK-NEXT: #2 Thread 31
