[Bug go/79122] go test -race reports import cycles with gccgo

[aconway at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79122

--- Comment #3 from Alan <aconway at redhat dot com> ---
I thought that might be the case but couldn't find a clear statement after a
fair bit of googling. Is there a 'limitations of gccgo' doc somewhere that
lists the unsupported features?

You can close this from my perspective, unless you want to keep it to track the
error message/documentation issues.