go ifacemethod3 源码
golang ifacemethod3 代码
文件路径：/src/cmd/link/internal/ld/testdata/deadcode/ifacemethod3.go
// Copyright 2020 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.
// Like ifacemethod2.go, this tests that a method *is* live
// if the type is "indirectly" converted to an interface
// using reflection with a method descriptor as intermediate.
package main
import "reflect"
type S int
func (s S) M() { println("S.M") }
type I interface{ M() }
type T float64
func (t T) F(s S) {}
func main() {
var t T
ft := reflect.TypeOf(t).Method(0).Type
at := ft.In(1)
v := reflect.New(at).Elem()
v.Interface().(I).M()
}
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