https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61840
--- Comment #2 from Ian Lance Taylor <ian at airs dot com> --- Please tell us what kind of system you are running on and precisely how you ran configure. The error report doesn't make sense; it seems incomplete. I don't see how the test could fail without printing out more than that. What happens if you cd into the directory x86_64-unknown-linux-gnu/32/libgo and run "make sync/atomic/check"?