| // Copyright 2021 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. |
| |
| package p |
| |
| type T1 interface{ M() } |
| |
| func F1() T1 |
| |
| var _ = F1().(*X1 /* ERROR "undefined: X1" */) |
| |
| func _() { |
| switch F1().(type) { |
| case *X1 /* ERROR "undefined: X1" */ : |
| } |
| } |
| |
| type T2 interface{ M() } |
| |
| func F2() T2 |
| |
| var _ = F2 /* ERROR "impossible type assertion: F2().(*X2)\n\t*X2 does not implement T2 (missing method M)" */ ().(*X2) |
| |
| type X2 struct{} |
| |
| func _() { |
| switch F2().(type) { |
| case * /* ERROR "impossible type switch case: *X2\n\tF2() (value of type T2) cannot have dynamic type *X2 (missing method M)" */ X2: |
| } |
| } |
