VMS Help CC, Messages, MISALGNDMEM  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        This member is at offset <offset>, which is not a
                multiple of the member's alignment of <align>.
                Consider padding before this member, rearranging the
                order of member declarations, or using #pragma
                member_alignment.

 Description    A member of a struct or union requires an alignment
                for efficient access but will be allocated at an
                offset that is not a multiple of that alignment.

 User Action    Use one of the suggestions made in the message.