[Bug preprocessor/103355] libcpp/lex.c:1289:9: warning: use of the 'likely' attribute is a C++20 extension [-Wc++20-extensions]

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103355

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The question becomes unknown attributes don't do anything right? If so the
warning on an attribute like this seems over the top.