76     boost::signals2::signal<int (), max_or_default<int> > s0;  in test_zero_args()  local
78     std::cout << "sizeof(signal) = " << sizeof(s0) << std::endl;  in test_zero_args()
79     boost::signals2::connection c2 = s0.connect(i2);  in test_zero_args()
80     boost::signals2::connection c72 = s0.connect(72, i72);  in test_zero_args()
81     boost::signals2::connection c62 = s0.connect(60, i62);  in test_zero_args()
82     boost::signals2::connection c42 = s0.connect(i42);  in test_zero_args()
84     BOOST_CHECK(s0() == 72);  in test_zero_args()
86     s0.disconnect(72);  in test_zero_args()
87     BOOST_CHECK(s0() == 62);  in test_zero_args()
90     BOOST_CHECK(s0() == 62);  in test_zero_args()
92     s0.disconnect(72); // Triple-disconect should be safe  in test_zero_args()
93     BOOST_CHECK(s0() == 62);  in test_zero_args()
96     s0.connect(60, i63);  in test_zero_args()
97     BOOST_CHECK(s0() == 63);  in test_zero_args()
100     s0.disconnect(60);  in test_zero_args()
101     BOOST_CHECK(s0() == 42);  in test_zero_args()
104     BOOST_CHECK(s0() == 2);  in test_zero_args()
107     BOOST_CHECK(s0() == 0);  in test_zero_args()
111     boost::signals2::signal<int (), max_or_default<int> > s0;  in test_zero_args()  local
112     boost::signals2::connection c2 = s0.connect(i2);  in test_zero_args()
113     boost::signals2::connection c72 = s0.connect(i72);  in test_zero_args()
114     boost::signals2::connection c62 = s0.connect(i62);  in test_zero_args()
115     boost::signals2::connection c42 = s0.connect(i42);  in test_zero_args()
117     const boost::signals2::signal<int (), max_or_default<int> >& cs0 = s0;  in test_zero_args()
125     boost::signals2::signal<int (), max_or_default<int> > s0;  in test_zero_args()  local
126     boost::signals2::connection c7 = s0.connect(i7);  in test_zero_args()
127     boost::signals2::connection c10 = s0.connect(i10);  in test_zero_args()
129     BOOST_CHECK(s0() == 10);  in test_zero_args()
130     BOOST_CHECK(s0() == 11);  in test_zero_args()