|  | // run | 
|  |  | 
|  | // 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. | 
|  |  | 
|  | // Check the text of the panic that comes from | 
|  | // a nil pointer passed to automatically generated method wrapper. | 
|  |  | 
|  | package main | 
|  |  | 
|  | import "fmt" | 
|  |  | 
|  | type T int | 
|  |  | 
|  | type I interface { | 
|  | F() | 
|  | } | 
|  |  | 
|  | func (t T) F() {} | 
|  |  | 
|  | var ( | 
|  | t *T | 
|  | i I = t | 
|  | ) | 
|  |  | 
|  | func main() { | 
|  | defer func() { | 
|  | got := recover().(error).Error() | 
|  | want := "value method main.T.F called using nil *T pointer" | 
|  | if got != want { | 
|  | fmt.Printf("panicwrap error text:\n\t%q\nwant:\n\t%q\n", got, want) | 
|  | } | 
|  | }() | 
|  | i.F() | 
|  | } |