https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84525
--- Comment #4 from Zhao Chun <buaa.zhaoc at gmail dot com> --- (In reply to Jakub Jelinek from comment #3) > (In reply to Zhao Chun from comment #2) > > Thanks for you explain. > > It looks some weird to me. > > If the type was int64_t or others, this can work. > > No, it would be invalid too. It may appear to work. > > > Is there some specs to say that __int128 is 16-byte aligned? > > Just check the __alignof__ (__int128) value? Yes, you'er right. Is there good way to assign value to unaligned int type except memcpy?
