https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91605
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Hmm, there's nothing to pack here so I wonder if -fpack-struct has any effect on alignment of A. It certainly has ABI effects (as documented) and we may not implement (aka ICE) all -fpack-struct=N ABI variants correctly.
