// 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|initialization cycle" const ( X = A A = B // ERROR "refers to itself|definition loop|initialization cycle" B = D C, D = 1, A ) func main() { }