https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67598
--- Comment #1 from Arseny Solokha <asolokha at gmx dot com> --- (In reply to Arseny Solokha from comment #0) > I still have to find out > when the issue have started showing up, given that I now have half a year > wide window. 6.0.0-alpha20150802 snapshot bootstraps fine, and 6.0.0_alpha20150906 fails. I failed to bootstrap 6.0.0_alpha20150830 because of unrelated build failure, but all in all the issue seems to be introduced sometime in August.