| // run | |
| // Copyright 2022 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. | |
| // Test that generic interface-interface comparisons resulting from | |
| // value switch statements are handled correctly. | |
| package main | |
| func main() { | |
| f[X](0) | |
| } | |
| type Mer[T any] interface{ M(T) } | |
| type MNer[T any] interface { | |
| Mer[T] | |
| N() | |
| } | |
| type X int | |
| func (X) M(X) {} | |
| func (X) N() {} | |
| func f[T MNer[T]](t T) { | |
| switch Mer[T](t) { | |
| case MNer[T](t): | |
| // ok | |
| default: | |
| panic("FAIL") | |
| } | |
| } |