1 // errorcheck 2 3 // Copyright 2009 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 package main 8 9 func main() { 10 // 6g used to compile these as two different 11 // hash codes so it missed the duplication 12 // and worse, compiled the wrong code 13 // for one of them. 14 var x interface{}; 15 switch x.(type) { 16 case func(int): 17 case func(f int): // ERROR "duplicate" 18 } 19 } 20