https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69098
--- Comment #3 from hir...@trash-mail.com --- Your testcase is really quite a bit smaller still – impressive skills! :) Thanks for confirming and since 5.1.0 works for you, on Wandbox and additionally your testcase doesn’t fail locally, I guess I might just have looked at the wrong one of my two installations when I queried the version, perhaps I forgot to prepend '.\' or something like that.