https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80814
--- Comment #2 from Hussam Al-Tayeb <me at hussam dot eu.org> --- (In reply to Ian Lance Taylor from comment #1) > Are you doing a from-scratch build or an incremental build? Try removing > the x86_64-pc-linux-gnu/libgo directory to force it to be rebuilt. I was doing a from-scratch build. It avoids accidental issues.