https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66509
--- Comment #6 from Jack Howarth <howarth.at.gcc at gmail dot com> --- A check of a recent build gcc trunk against the GNU assembler from Xcode 6.2 shows the same... gcc_cv_as_ix86_fildq=no gcc_cv_as_ix86_filds=no as the build against Xcode 7's clang-based assembler.