| // 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 | 
 |  |