test: bug424: wrong embedded method called

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5695083

test/bugs/424.dir/lib.go

@@ -0,0 +1,16 @@
+// Copyright 2012 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 lib
+
+type I interface {
+	m() string
+}
+
+type T struct{}
+
+// m is not accessible from outside this package.
+func (t *T) m() string {
+	return "lib.T.m"
+}

test/bugs/424.dir/main.go

@@ -0,0 +1,61 @@
+// Copyright 2012 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.
+
+// Tests that method calls through an interface always
+// call the the locally defined method localT.m independent
+// at which embedding level it is and in which order
+// embedding is done.
+
+package main
+
+import "./lib"
+
+type localI interface {
+	m() string
+}
+
+type localT struct{}
+
+func (t *localT) m() string {
+	return "main.localT.m"
+}
+
+type myT1 struct {
+	localT
+}
+
+type myT2 struct {
+	localT
+	lib.T
+}
+
+type myT3 struct {
+	lib.T
+	localT
+}
+
+func main() {
+	var i localI
+
+	i = new(localT)
+	if i.m() != "main.localT.m" {
+		println("BUG: localT:", i.m(), "called")
+	}
+
+	i = new(myT1)
+	if i.m() != "main.localT.m" {
+		println("BUG: myT1:", i.m(), "called")
+	}
+
+	i = new(myT2)
+	if i.m() != "main.localT.m" {
+		println("BUG: myT2:", i.m(), "called")
+	}
+
+	i = new(myT3)
+	if i.m() != "main.localT.m" {
+		println("BUG: myT3:", i.m(), "called")
+	}
+
+}

test/bugs/424.go

@@ -0,0 +1,9 @@
+// $G $D/$F.dir/lib.go && $G $D/$F.dir/main.go && $L main.$A && $A.out
+
+// Copyright 2012 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.
+
+// Test case for embedded method invocation.
+
+ignored

test/golden.out

@@ -17,5 +17,8 @@
 
 == bugs/
 
+=========== bugs/424.go
+BUG: myT3: lib.T.m called
+
 =========== bugs/bug395.go
 bug395 is broken