re PR c++/5520 (Add a warning to detect empty body of if statements (like in the C frontend))

2006-01-20  Dirk Mueller  <dmueller@suse.com>

        PR c++/5520
        * c-parser.c (c_parser_if_body): Use build_empty_stmt()
        instead of a special NOP marker.
        * c-typeck.c (c_finish_if_stmt): Remove obsoleted special
        NOP marker handling.
        * c-common.h (empty_body_warning): Add forward declaration.
        * c-common.c (empty_body_warning): Add (from c_finish_if_stmt).
        Now uses IS_EMPTY_STMT() instead of special NOP markers.

        * semantics.c (finish_if_stmt): Call empty_body_warning.
        * parser.c (cp_parser_implicitly_scoped_statement):
        Mark empty statement with an empty stmt.

        * g++.dg/warn/empty-body.C: New.

From-SVN: r110019