https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119012
--- Comment #17 from Levi Zim <rsworktech at outlook dot com> --- (In reply to Sam James from comment #16) > (In reply to Levi Zim from comment #15) > > As long as the flag is passed correctly and applied to both the stage2 + > stage3 builds, then the flag can't be to blame (just a trigger for it, > rather than some problem with the flag itself). It is passed through BOOT_CFLAGS so I suppose it is passed correctly. I don't know why the comparison failure occur as I am not familiar with the GCC internals. But building some of the commits yields a crash in RTL pass(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119012#c10). Would it be related to the bisected commit?