|  | // errorcheck | 
|  |  | 
|  | // 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. | 
|  |  | 
|  | package main | 
|  |  | 
|  | type T int | 
|  | type U int | 
|  |  | 
|  | var x int | 
|  |  | 
|  | var t T = int(0)	// ERROR "cannot use|incompatible" | 
|  | var t1 T = int(x)	// ERROR "cannot use|incompatible" | 
|  | var u U = int(0)	// ERROR "cannot use|incompatible" | 
|  | var u1 U = int(x)	// ERROR "cannot use|incompatible" | 
|  |  | 
|  | type S string | 
|  | var s S | 
|  |  | 
|  | var s1 = s + "hello" | 
|  | var s2 = "hello" + s | 
|  | var s3 = s + string("hello")	// ERROR "invalid operation|incompatible" | 
|  | var s4 = string("hello") + s	// ERROR "invalid operation|incompatible" | 
|  |  | 
|  | var r string | 
|  |  | 
|  | var r1 = r + "hello" | 
|  | var r2 = "hello" + r | 
|  | var r3 = r + string("hello") | 
|  | var r4 = string("hello") + r | 
|  |  |