http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59217
--- Comment #2 from Ludovic Courtès <ludo at gnu dot org> --- > PS: For the record the corresponding fix in Guix is > <http://git.savannah.gnu.org/cgit/guix.git/commit/?h=core-updates>. err, should read: <http://git.savannah.gnu.org/cgit/guix.git/commit/?h=core-updates&id=0ece70747028ee88c58dc90b1089b4f74f243015>.