https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89051
--- Comment #2 from m101010a at gmail dot com --- (In reply to Martin Sebor from comment #1) > I don't think GCC has an internal representation of warning groups It has to have some representation, because it can tell which warning group is more specific (the documentation specifically mentions this, and it works in practice). That representation might be able to be re-used to mark which groups are also errors.
