mirror of
https://github.com/golang/go
synced 2024-11-26 20:11:26 -07:00
37 lines
719 B
Go
37 lines
719 B
Go
|
// run
|
||
|
|
|
||
|
|
// Copyright 2016 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.
|
||
|
|
|
||
|
|
// The linker can prune methods that are not directly called or
|
||
|
|
// assigned to interfaces, but only if reflect.Type.MethodByName is
|
||
|
|
// never used. Test it here.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import reflect1 "reflect"
|
||
|
|
|
||
|
|
var called = false
|
||
|
|
|
||
|
|
type M int
|
||
|
|
|
||
|
|
func (m M) UniqueMethodName() {
|
||
|
|
called = true
|
||
|
|
}
|
||
|
|
|
||
|
|
var v M
|
||
|
|
|
||
|
|
type MyType interface {
|
||
|
|
MethodByName(string) (reflect1.Method, bool)
|
||
|
|
}
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
var t MyType = reflect1.TypeOf(v)
|
||
|
|
m, _ := t.MethodByName("UniqueMethodName")
|
||
|
|
m.Func.Interface().(func(M))(v)
|
||
|
|
if !called {
|
||
|
|
panic("UniqueMethodName not called")
|
||
|
|
}
|
||
|
|
}
|