https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83396
--- Comment #12 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- https://sourceware.org/ml/libc-testresults/2017-q4/msg00460.html shows GCC build failures on alpha, hppa, ia64, m68k, microblaze, sh, tilegx, tilepro. (The cases where the GCC build completed but the glibc build failed are unrelated and should now be fixed in glibc.) I haven't verified that all of these are caused by the SFN changes, but it seems plausible they are.
