https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114266
--- Comment #3 from Daniel Lundin <daniel.lundin.mail at gmail dot com> --- (In reply to Joseph S. Myers from comment #2) > The relevant constraint here is "An array of unknown size shall not be > initialized by an empty initializer.". Indeed! I didn't realize it was also a constraint (C23 6.7.10). That probably means that a diagnostic warning should always be given and not just in -pedantic mode.
