http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59025
--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> --- Pat was working on that. He reported to me that he had gone through compiling each file with the "bad" options and did not hit the error, so it seems it is an interaction between multiple files and he was in the process of trying to determine which set of files are buggy.