http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52079
--- Comment #4 from Ian Lance Taylor <ian at airs dot com> 2012-02-01 14:22:36 UTC --- The patch to gcc/go/go-lang.c is OK. You don't need the #if as far as I'm concerned. (The whole idea of a frontend hook for type_for_mode is somewhat broken anyhow.)