// errorcheck
// 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.
// Issue 3757: unhelpful typechecking loop message
// for constants that refer to themselves.
package main
const a = a // ERROR "refers to itself|definition loop"
const (
X = A
A = B // ERROR "refers to itself|definition loop"
B = D
C, D = 1, A
)
func main() {
}