| // compile | |
| // Copyright 2020 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. | |
| // Ensure that late expansion correctly handles an OpIData with type interface{} | |
| package p | |
| type S struct{} | |
| func (S) M() {} | |
| type I interface { | |
| M() | |
| } | |
| func f(i I) { | |
| o := i.(interface{}) | |
| if _, ok := i.(*S); ok { | |
| o = nil | |
| } | |
| println(o) | |
| } |