| // 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. | 
 |  | 
 | // Test that even if a file imports runtime, | 
 | // it cannot get at the low-level runtime definitions | 
 | // known to the compiler.  For normal packages | 
 | // the compiler doesn't even record the lower case | 
 | // functions in its symbol table, but some functions | 
 | // in runtime are hard-coded into the compiler. | 
 | // Does not compile. | 
 |  | 
 | package main | 
 |  | 
 | import "runtime" | 
 |  | 
 | func main() { | 
 | 	runtime.printbool(true)	// ERROR "unexported" "undefined" | 
 | } |