test: add a test that gccgo failed to compile

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/13451045

diff --git a/test/fixedbugs/bug477.go b/test/fixedbugs/bug477.go
new file mode 100644 (file)
index 0000000..86289af
--- /dev/null
+++ b/test/fixedbugs/bug477.go
@@ -0,0 +1,34 @@
+// compile
+
+// Copyright 2013 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 multiple identical unnamed structs with methods.  This caused
+// a compilation error with gccgo.
+
+package p
+
+type S1 struct{}
+
+func (s S1) M() {}
+
+type S2 struct {
+       F1 struct {
+               S1
+       }
+       F2 struct {
+               S1
+       }
+}
+
+type I interface {
+       M()
+}
+
+func F() {
+       var s2 S2
+       var i1 I = s2.F1
+       var i2 I = s2.F2
+       _, _ = i1, i2
+}