https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119012
--- Comment #15 from Levi Zim <rsworktech at outlook dot com> --- (In reply to Sam James from comment #14) > Thanks. Please try to reproduce it manually next. If I didn't revert that commit, then bisection of the CFLAGS shows that -Wp,-D_FORTIFY_SOURCE=3 is what causes the build to fail. If I change that to -Wp,-D_FORTIFY_SOURCE=2, the bootstrap could succeed. So now we have two bisections, one of the commits and one of the CFLAGS. I am not sure which one should be blamed. Or if -Wp,-D_FORTIFY_SOURCE=3 uncovers some issue in the bisected commit?