1// errorcheck
2
3// Copyright 2018 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
7package p
8
9type intAlias = int
10
11func f() {
12	switch interface{}(nil) {
13	case uint8(0):
14	case byte(0): // ERROR "duplicate case"
15	case int32(0):
16	case rune(0): // ERROR "duplicate case"
17	case int(0):
18	case intAlias(0): // ERROR "duplicate case"
19	}
20}
21