https://gcc.gnu.org/bugzilla/show_bug.cgi?id=7651
--- Comment #28 from Manuel López-Ibáñez <manu at gcc dot gnu.org> --- A good way to finish this is to find which option in Clang warns for the corresponding thing in Wextra and add the same option to GCC. I can take care of writing and testing the patches but someone else would need to do the search for each warning.
