https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80932
--- Comment #8 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- https://gcc.gnu.org/ml/gcc-regression/2017-06/msg00104.html https://gcc.gnu.org/ml/gcc-regression/2017-06/msg00105.html https://gcc.gnu.org/ml/gcc-regression/2017-06/msg00107.html