https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66119
--- Comment #11 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> --- There is a patch for this on the Mailing List. Jeff has approved the code-changes and I need an Ack for the test-case (ping: https://gcc.gnu.org/ml/gcc-patches/2015-06/msg02216.html ). After that I'll backport it to GCC 5.1.1. Hopefully in time to not block the release.