go issue45920 源码
golang issue45920 代码
文件路径：/src/go/types/testdata/fixedbugs/issue45920.go
// 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) }
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