test/syntax/slice.go - go - Git at Google

 // errchk $G -e $D/$F.go

 // Copyright 2010 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

 var x = y[:z]	// ERROR "missing lower bound in slice expression|undefined"
	// errchk $G -e $D/$F.go

	// Copyright 2010 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

	var x = y[:z] // ERROR "missing lower bound in slice expression\|undefined"