Correctly report errors for ambiguous default methods

src/test/compile-fail/ambig-default-method.rs

@@ -0,0 +1,19 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+trait Foo { fn method(&self) {} } //~ NOTE `Foo::method`
+trait Bar { fn method(&self) {} } //~ NOTE `Bar::method`
+
+impl Foo for uint {}
+impl Bar for uint {}
+
+fn main() {
+    1u.method(); //~ ERROR multiple applicable methods in scope
+}