// $G $D/$F.go || echo BUG: bug151// 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.packagemaintypeSstringtypeEmptyinterface{}func(vS)Less(eEmpty)bool{returnv<e.(S);}/*bugs/bug151.go:10: illegal types for operand: CALL string S*/