[Bug preprocessor/60975] -Wvariadic-macros does not print warning

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60975

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Please send patches to gcc-patches@gcc.gnu.org and specify how you tested it
"Bootstrapped and tested on ....".