https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68383
--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> --- Created attachment 39044 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39044&action=edit A patch This gives: Write::DataMapGrammar<std::back_insert_iterator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::DataMapGrammar()::{lambda()#1} const& std::forward<Write::DataMapGrammar<std::back_insert_iterator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::DataMapGrammar()::{lambda()#1} const&>(std::remove_reference<Write::DataMapGrammar<std::back_insert_iterator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::DataMapGrammar()::{lambda()#1} const&>::type&) No idea if it is correct.
