1 // Copyright 2020 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 package p 6 7 func _() { 8 var x interface{} 9 switch t := x.(type) { 10 case S /* ERROR "cannot use generic type" */ : 11 t.m() 12 } 13 } 14 15 type S[T any] struct {} 16 17 func (_ S[T]) m() 18