https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99143
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Those assumptions are just wrong. As e.g. the kernel people have been told, the only reliable way to ensure no increases of alignment for speed happens is to use __attribute__((aligned (...))) on the decls that should not be aligned more than stated (you can use alignof (...) in the aligned attribute argument.