https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64710
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- It was caused by r219910.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64710
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- It was caused by r219910.