The guys managing code.google.com put a nice redirect in place, just following this.
I'll probably push this back to GCC 6 as well in a while. Committed. Gerald 2016-05-27 Gerald Pfeifer <ger...@pfeifer.com> * doc/sourcebuild.texi: New address for upstream Go repository. Index: doc/sourcebuild.texi =================================================================== --- doc/sourcebuild.texi (revision 236835) +++ doc/sourcebuild.texi (working copy) @@ -86,7 +86,7 @@ @item libgo The Go runtime library. The bulk of this library is mirrored from the -@uref{http://code.google.com/@/p/@/go/, master Go repository}. +@uref{https://github.com/@/golang/go, master Go repository}. @item libgomp The GNU Offloading and Multi Processing Runtime Library.