https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93418
--- Comment #3 from Devin Hussey <husseydevin at gmail dot com> --- I think I found the culprit commit. Haven't set up a GCC build tree yet, though. https://github.com/gcc-mirror/gcc/commit/a51c4926712307787d133ba50af8c61393a9229b
