https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108896
--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Bill Wendling from comment #18) > > This is not the case in C: https://godbolt.org/z/P7M6cdnoa > > > Right, it's not legal C syntax. I wanted to point out that it's not an > impossible syntax. The lexer and parser have no idea of, nor should they > care about, legal types, complete struct definitions, etc. All it sees is a They do though, in lots of ways. The reason it works in C++ is that the language explicitly requires it and the parser just needs to save token sequences of NSDMIs and member functions defined inside of class and parse them when the class is complete. We don't want to do that in C.
