HandlerClass instance;
- sigc::signal<void> signal_test;
+ sigc::signal<void()> signal_test;
connection = signal_test.connect(sigc::mem_fun(instance, &HandlerClass::handler));
result_stream << "Number of signal handlers before signal emission: " << signal_test.size();
util->check_result(result_stream, "Number of signal handlers before signal emission: 1");