https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71975
--- Comment #3 from Gert <gw.fossdev at gmail dot com> --- Created attachment 38957 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38957&action=edit test case with "enu" being a struct I would also assume that this is a parsing issue. With enu being a struct the compilation fails always (also with -std=c++98 and c++03) > g++ -std=c++98 whitespace_eating-class.cc whitespace_eating-class.cc:11:24: error: ISO C++ forbids declaration of 'wow' with no type [-fpermissive] friend enu ::wow(); ^ whitespace_eating-class.cc:11:24: error: no 'int enu::wow()' member function declared in class 'enu'
