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

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

 Description    One of the pointer-size stacks, managed by the
                #pragma pointer_size, #pragma require_pointer_size,
                #pragma required_vptr_size, and #pragma environment
                directives, contains more restores than saves.  This
                could signify a coding or logic error in the program.

 User Action    Make sure each restore has a corresponding save.