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

 Message        This "pop" has underflowed the pragma <stack name>
                stack.  No corresponding "push" was found.

 Description    The member_alignment/pack stack, managed by the
                #pragma pack and #pragma member_alignment directives,
                contains more pops/restores than pushes/saves, This
                could signify a coding or logic error in the program.

 User Action    Make sure each pop/restore has a corresponding
                push/save.