- filed 6g crash bug

SVN=127093

test/bugs/bug066.go

+// $G $D/$F.go
+
+// Copyright 2009 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 main
+
+
+type Scope struct {
+	entries *map[string] *Object;
+}
+
+
+type Type struct {
+	scope *Scope;
+}
+
+
+type Object struct {
+	typ *Type;
+}
+
+
+func Lookup(scope *Scope) *Object {
+	return scope.entries["foo"];
+}