// 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 a | |
type X int | |
func (x X) M() X { return x } | |
func F[T interface{ M() U }, U interface{ M() T }]() {} | |
func G() { F[X, X]() } |