http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40752
--- Comment #23 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-05-05 15:30:06 UTC --- (In reply to comment #22) > If someone really thinks there should be a warning for this behavior, how > about > adding a separate > -Wchar-arithmetic > warning which warns on all char arithmetic and see how much people use it. I think adding a new option Wconversion-after-promotion that covers all cases where the conversion occurs to the same type that was originally promoted from would be the most appropriate. I have a feeling that it should not be hard to implement, but I am not sure how, and I have many other things I would like to do first. So, please David, Wes, photon, give it a try. The code is in c-family/c-common.c (conversion_warning).
