http://gcc.gnu.org/bugzilla/show_bug.cgi?id=2316
--- Comment #40 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-01-04 11:49:35 UTC --- Great! If all existing code is accepted with a warning that provides backwards compatibility, but also allows conforming code to correctly overload on language linkage - that sounds ideal. IMHO the warning should be controllable by something such as -Wlanguage-linkage (since there will be lots of warnings in some codebases, so it needs to be possible to use -Wall but disable these warnings) and the conversion should be rejected with -pedantic-errors.
