216         weak_ptr<X> wp1(p2);  in main()  local
218         BOOST_TEST(!wp1.expired());  in main()
219         BOOST_TEST(wp1.use_count() != 0);  in main()
237         BOOST_TEST(wp1.expired());  in main()
238         BOOST_TEST(wp1.use_count() == 0);  in main()
242             shared_ptr<X> sp1(wp1);  in main()
249         test_is_zero(wp1.lock());  in main()
255         test_nonshared(wp1, wp2);  in main()
275         wp1 = p2;  in main()
276         test_is_zero(wp1.lock());  in main()
279         wp1 = p4;  in main()
280         wp1 = wp3;  in main()
282         wp1 = wp2;  in main()
284         BOOST_TEST(wp1.use_count() == 1);  in main()
285         test_shared(wp1, wp2);  in main()
289         bool b1 = wp1 < wp5;  in main()
290         bool b2 = wp5 < wp1;  in main()
294         BOOST_TEST(wp1.use_count() == 0);  in main()
303         BOOST_TEST(b1 == (wp1 < wp5));  in main()
304         BOOST_TEST(b2 == (wp5 < wp1));  in main()