I noticed that garbage collection is not yet implemented in gccgo.
http://golang.org/doc/gccgo_install.html#Unimplemented
Does the standard Go compiler (gc) support garbage collection yet?
gccgo has its own runtime, the plan is to switch to use a single runtime shared by both gc and gccgo.
Also, the current garbage collector in gc is rather simple, a concurrent and much faster implementation based on research done by IBM is under development, and will probably be the one used by both gccgo and gc.
Yes.