https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105473
--- Comment #9 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> --- Thank you for digging out the standards references. That was going to be my next step as the standards are notorious for these kinds of tidbits and corner cases. I have been reviewing the code implementations of this stuff so I have identified the places where checks can be added. Some of my preliminary attempts have resulted in quite a few test regressions. I am still at it here.
