https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111689
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note C99 has the same table: https://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf C++11 has the same table too: https://timsong-cpp.github.io/cppwp/n3337/lex.icon
