// errorcheck // Copyright 2013 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // Issue 5698: can define a key type with slices. package main type Key struct { a int16 // the compiler was confused by the padding. b []int } type Val struct{} type Map map[Key]Val // ERROR "invalid map key type"