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

 Message        Accepting a label without a following statement is a
                language extension.

 Description    The C standard states that a label must be followed
                by a statement.  For compatibility with other C
                compilers, Compaq C will accept a label without a
                statement.  Be aware that this program does not
                conform to the standard and may be rejected by other
                compilers.

 User Action    Add a semicolon after the label to create a null
                statement.