In order to pull of an attack, you'd need to know what address range the program in question has been allocated, then figure out the smaller range that the runtime is actively using, then give it data with integers in that range. This is impractical.
If you think you can pull it off play.golang.org lets you upload text to a Go program on Appengine, then it compiles that program and runs it. This gives you 2 programs to attack, the playground binary, and the one compiled from your source. If you can do it, you'll have a way to kill machines inside Google.