https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127382
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to [email protected] from comment #13) > That means when we store to _BitInt we can put garbage in the padding > as we are properly extending at loads? That is, memory is not part > of the ABI and an application does not have to adhere to padding > details for its memory representation? Only on x86, aarch64 and powerpc*. On other _BitInt targets it can skip the extension on loads and has to extend before stores. Memory (at least addressable memory which escaped or could have otherwise the padding bits inspected) is part of the ABI.
