test/fixedbugs/issue24547.go

// run

// Copyright 2018 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.

// When computing method sets with shadowed methods, make sure we
// compute whether a method promotion involved a pointer traversal
// based on the promoted method, not the shadowed method.

package main

import (
	"bytes"
	"fmt"
)

type mystruct struct {
	f int
}

func (t mystruct) String() string {
	return "FAIL"
}

func main() {
	type deep struct {
		mystruct
	}
	s := struct {
		deep
		*bytes.Buffer
	}{
		deep{},
		bytes.NewBufferString("ok"),
	}

	if got := s.String(); got != "ok" {
		panic(got)
	}

	var i fmt.Stringer = s
	if got := i.String(); got != "ok" {
		panic(got)
	}
}