https://bugs.freedesktop.org/show_bug.cgi?id=100695
--- Comment #5 from Hadrien freedesktop@psydk.org --- (In reply to Michel Dänzer from comment #4)
Bug 100681 was fixed by LLVM SVN r300791, how about this?
I got an update of the padoka package today. It ships with llvm-5.0 r301038 but unfortunately the problem is still there :(