https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61763
--- Comment #5 from Douglas Mencken <dougmencken at gmail dot com> --- Re-tried without forcing -O3, and with default -O2 4.9.1 doesn't complain on stages 2&3 comparison.
dougmencken at gmail dot com Sun, 05 Oct 2014 22:00:52 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61763
--- Comment #5 from Douglas Mencken <dougmencken at gmail dot com> --- Re-tried without forcing -O3, and with default -O2 4.9.1 doesn't complain on stages 2&3 comparison.