https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83492
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- The patch has been posted already: http://gcc.gnu.org/ml/gcc-patches/2017-12/msg01271.html and I don't think you need any kind of new testcase, I'd expect most of the testsuite would fail because of this.