| // 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 |
| |
| func f1[T any, C chan T | <-chan T](ch C) {} |
| |
| func _(ch chan int) { f1(ch) } |
| func _(ch <-chan int) { f1(ch) } |
| func _(ch chan<- int) { f1 /* ERROR chan<- int does not implement chan int\|<-chan int */ (ch) } |
| |
| func f2[T any, C chan T | chan<- T](ch C) {} |
| |
| func _(ch chan int) { f2(ch) } |
| func _(ch <-chan int) { f2 /* ERROR <-chan int does not implement chan int\|chan<- int */ (ch) } |
| func _(ch chan<- int) { f2(ch) } |
