https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68701
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Jakub Jelinek from comment #3) > As main needs dynamic stack realignment, I wonder if we just shouldn't error > out on trying to compile it with -ffixed-ebp. It is still possible to compile with -maccumulate-outgoing-args. Perhaps we can error out with the advice that -ffixed-ebp requires -m-o-a option, as is already the case with stack probing?