On the following program: ``` package a var x = -byte(1) ``` `gotype` says: ``` tmp.go:2:10: byte(1) (constant -1 of type byte) overflows byte ``` It should say `-byte(1)`. `byte(1)` does not overflow byte. on commit e9a746de6e61b9b823a981843c0d98bc209eed2b
