https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92212
--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- See bugs 14030, 26732, 48091, 64526. Not sure how many bugs in this area are genuinely different - I suspect a single bug could be considered to cover the whole area of checking arguments to K&R functions (with warnings, not pedwarns or errors, for bad calls), as long as all different cases are properly covered with tests added for any fix.