https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63178
--- Comment #4 from Dima Kogan <gccbugs at dima dot secretsauce.net> --- Hi. Thank you for looking at this. I'm not set up to make bleeding-edge gcc builds, so let me wait until Debian catches up, and I'll report back. Currently they're on r214759 (not what the bug report mentions, but affected too), and they update relatively often. Thanks again.