https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81404
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> --- Agreed with comment #2 for reserved symbols that have non-reserved counterparts (such as INT_MAX). (If the set of non-reserved symbols changes depending on options, e.g., with -std=c11 vs earlier modes, it would be a nice touch for the hint to take it into consideration.) But there are also quite a few reserved identifiers that have no equivalents in the user namespace. Examples include C/C++ standard macros such __STDC__, __FILE__, etc., and GCC's own predefined macros such as _LP64 or built-ins like __builtin_expect. It's helpful for GCC to continue to suggest those when appropriate.
