https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67818
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Mikael Morin from comment #4) > I have looked at the r222477 patch more in details, and it seems reasonable > after all. > Moreover, Paul suggested a backport when he approved it. > So I think I'll go the backport route. > HJL, can you confirm it fixes the problem? Yes, r222477 fixed the regression on gcc-5-branch without any new testsuite failures.