https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77478
--- Comment #7 from Alexander Monakov <amonakov at gcc dot gnu.org> --- Richard, I don't believe this is a dup. According to my git-bisect, this was fixed or made latent during gcc-6 development by your patch: https://gcc.gnu.org/ml/gcc-patches/2015-07/msg00120.html [PATCH] Consolidate alignment folding (this is r225310 on trunk) How to go forward from here? (about the alignment dumping patchlet, I think it would be nice to have this functionality on trunk, can I help with that? is there something I'm missing about this patch that makes it unsuitable for trunk as-is?)