http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20710
--- Comment #3 from loose at astron dot nl 2010-11-01 12:29:27 UTC --- As far as I know attributes were removed from the C0x Final Draft. Besides, if GCC were to provide a compiler flag to warn for this, you would also be able to catch potential bugs in "old" code, or in code where the author was not explicit about overrides.
