// compile // Copyright 2021 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. package main type Fooer interface { Foo() Barer } type Barer interface { Bar() } type impl struct{} func (r *impl) Foo() Barer { return r } func (r *impl) Bar() {} func f1() { var r Fooer = &impl{} r.Foo().Bar() }