https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109956
--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Alexander Monakov from comment #8) > I think the following testcase indicates that GCC assumes that tail padding > is accessible: Well it aligned accesses are always accessable .... the alignment of `struct S` in this case is 4 byte aligned after all.