https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91837
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Daniel Cooke from comment #3) > I tried replicating the issue on a CentOS machine (AWS EC2) with the exact > same CPU and got the correct output. However, I just fired up a fresh AWS > EC2 instance running Ubuntu and I can replicate the bug again. Is it > possible that the bug is CPU *and* OS specific? You may run into https://sourceware.org/bugzilla/show_bug.cgi?id=23465
