| // errorcheck | 
 |  | 
 | // Copyright 2017 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. | 
 |  | 
 | // Issue 19012: if we have any unknown type at a call site, | 
 | // we must ensure that we return to the user a suppressed | 
 | // error message saying instead of including <T> in | 
 | // the message. | 
 |  | 
 | package main | 
 |  | 
 | func f(x int, y uint) { | 
 | 	if true { | 
 | 		return "a" > 10 // ERROR "^too many arguments to return$|return with value in function with no return|no result values expected|mismatched types" | 
 | 	} | 
 | 	return "gopher" == true, 10 // ERROR "^too many arguments to return$|return with value in function with no return|no result values expected|mismatched types" | 
 | } | 
 |  | 
 | func main() { | 
 | 	f(2, 3 < "x", 10) // ERROR "too many arguments|invalid operation|incompatible type" | 
 |  | 
 | 	f(10, 10, "a") // ERROR "too many arguments" | 
 | } |