https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94672
--- Comment #15 from Tobias Burnus <burnus at gcc dot gnu.org> --- (In reply to Tomáš Trnka from comment #12) > The fix for this broke assumed length optional character arguments. I have > noticed this on 10.2.1 20200723, which is currently used by Fedora 32. Thanks for the report – this follow-up regression has now been fixed for mainline (GCC 11) and on the GCC 10 branch. → FIXED. (Bug state actually unchanged as it wasn't reopened.)