1 // Copyright 2023 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // Like ifacemethod2.go, this tests that a method *is* live 6 // if the type is "indirectly" converted to an interface 7 // using reflection with a method descriptor as intermediate. 8 // However, it uses MethodByName() with a constant name of 9 // a method to look up. This does not disable the DCE like 10 // Method(0) does. 11 12 package main 13 14 import "reflect" 15 16 type S int 17 18 func (s S) M() { println("S.M") } 19 20 type I interface{ M() } 21 22 type T float64 23 24 func (t T) F(s S) {} 25 26 func main() { 27 var t T 28 meth, _ := reflect.TypeOf(t).MethodByName("F") 29 ft := meth.Type 30 at := ft.In(1) 31 v := reflect.New(at).Elem() 32 v.Interface().(I).M() 33 } 34