| // 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. | 
 |  | 
 | // Verify that illegal character literals are detected. | 
 | // Does not compile. | 
 |  | 
 | package main | 
 |  | 
 | const ( | 
 | 	// check that surrogate pair elements are invalid | 
 | 	// (d800-dbff, dc00-dfff). | 
 | 	_ = '\ud7ff' // ok | 
 | 	_ = '\ud800'  // ERROR "Unicode|unicode" | 
 | 	_ = "\U0000D999"  // ERROR "Unicode|unicode" | 
 | 	_ = '\udc01' // ERROR "Unicode|unicode" | 
 | 	_ = '\U0000dddd'  // ERROR "Unicode|unicode" | 
 | 	_ = '\udfff' // ERROR "Unicode|unicode" | 
 | 	_ = '\ue000' // ok | 
 | 	_ = '\U0010ffff'  // ok | 
 | 	_ = '\U00110000'  // ERROR "Unicode|unicode" | 
 | 	_ = "abc\U0010ffffdef"  // ok | 
 | 	_ = "abc\U00110000def"  // ERROR "Unicode|unicode" | 
 | 	_ = '\Uffffffff'  // ERROR "Unicode|unicode" | 
 | ) | 
 |  |