https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99671
--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> --- Created attachment 53863 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53863&action=edit Implementation of this (not yet ported to Sphinx) This patch implements the new warning; still uses texinfo rather than sphinx. Not yet posted to mailing list; am waiting on dust to settle from the texinfo->sphinx transition on trunk.