spec: typed indices must be of integer type
spec: typed indices must be of integer type

The same rules apply for make arguments.

R=r, rsc, iant, ken
CC=golang-dev
https://codereview.appspot.com/7656043

h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang