libcxx/src/system_error.cpp

232 system_error::__init(const error_code& ec, string what_arg)
236         if (!what_arg.empty())
237             what_arg += ": ";
238         what_arg += ec.message();
240     return what_arg;
243 system_error::system_error(error_code ec, const string& what_arg)
244     : runtime_error(__init(ec, what_arg)),
249 system_error::system_error(error_code ec, const char* what_arg)
250     : runtime_error(__init(ec, what_arg)),
261 system_error::system_error(int ev, const error_category& ecat, const string& what_arg)
262     : runtime_error(__init(error_code(ev, ecat), what_arg)),
267 system_error::system_error(int ev, const error_category& ecat, const char* what_arg)
268     : runtime_error(__init(error_code(ev, ecat), what_arg)),
284 __throw_system_error(int ev, const char* what_arg)
287     throw system_error(error_code(ev, system_category()), what_arg);
290     (void)what_arg;