// errorcheck // Copyright 2015 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 11737 - invalid == not being caught until generated switch code was compiled package p func f() func s(x interface{}) { switch x { case f: // ERROR "invalid case f \(type func\(\)\) in switch \(incomparable type\)|can only be compared to nil" } }