1// errorcheck
2
3// Copyright 2014 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// Issue 7214: No duplicate key error for maps with interface{} key type
8
9package p
10
11var _ = map[interface{}]int{2: 1, 2: 1} // ERROR "duplicate key"
12var _ = map[interface{}]int{int(2): 1, int16(2): 1}
13var _ = map[interface{}]int{int16(2): 1, int16(2): 1} // ERROR "duplicate key"
14
15type S string
16
17var _ = map[interface{}]int{"a": 1, "a": 1} // ERROR "duplicate key"
18var _ = map[interface{}]int{"a": 1, S("a"): 1}
19var _ = map[interface{}]int{S("a"): 1, S("a"): 1} // ERROR "duplicate key"
20
21type I interface {
22	f()
23}
24
25type N int
26
27func (N) f() {}
28
29var _ = map[I]int{N(0): 1, N(2): 1}
30var _ = map[I]int{N(2): 1, N(2): 1} // ERROR "duplicate key"
31