1#include <pthread.h> 2#include <semaphore.h> 3#include <stdio.h> 4 5struct A { 6 A() { 7 sem_init(&sem_, 0, 0); 8 } 9 virtual void F() { 10 } 11 void Done() { 12 sem_post(&sem_); 13 } 14 virtual ~A() { 15 sem_wait(&sem_); 16 sem_destroy(&sem_); 17 } 18 sem_t sem_; 19}; 20 21struct B : A { 22 virtual void F() { 23 } 24 virtual ~B() { } 25}; 26 27static A *obj = new B; 28 29void *Thread1(void *x) { 30 obj->F(); 31 obj->Done(); 32 return NULL; 33} 34 35void *Thread2(void *x) { 36 delete obj; 37 return NULL; 38} 39 40int main() { 41 pthread_t t[2]; 42 pthread_create(&t[0], NULL, Thread1, NULL); 43 pthread_create(&t[1], NULL, Thread2, NULL); 44 pthread_join(t[0], NULL); 45 pthread_join(t[1], NULL); 46} 47 48// CHECK: WARNING: ThreadSanitizer: data race 49