https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101197
--- Comment #14 from cqwrteur <unlvsur at live dot com> --- (In reply to Tamar Christina from comment #13) > (In reply to cqwrteur from comment #12) > > (In reply to cqwrteur from comment #11) > > > (In reply to Tamar Christina from comment #10) > How do you think you know when the size is small? That is unfortunate you have no way to deal with that. > > but on small memcopy and memmove. > > By logic this means you know the size is constant. That is for type punning reason I just mentioned before.