https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70735
--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Allan McRae from comment #6) > gcc 5.3.1 built from a snapshot tarball is calling itself 5.3.0 unless you > use "--with-pkgversion". I do not consider this a problem with Arch if gcc > does not report the correct version with the default configure options. Allan, surely this is the cause: https://projects.archlinux.org/svntogit/packages.git/tree/gcc/trunk/PKGBUILD#n48