// compile -c=4
// Copyright 2017 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.
// Issue 20162: embedded interfaces weren't dowidth-ed by the front end,
// leading to races in the backend.
package p
func Foo() {
_ = (make([]func() interface {
M(interface{})
}, 1))
}