https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63531
--- Comment #4 from Ralf <allizgubccg at reallysoft dot de> --- (In reply to Marek Polacek from comment #3) > Actually, I can't reproduce it with 4.9 nor with 5. I'd say your version > doesn't have r215459 yet, which I believe is the fix. Can you try newer GCC? I've tried it with 4.9.1 release version.. i don't see any newer release. Which version should i test?