go issue52228 源码
golang issue52228 代码
文件路径：/test/typeparam/issue52228.go
// 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.
package main
type SomeInterface interface {
Whatever()
}
func X[T any]() T {
var m T
// for this example, this block should never run
if _, ok := any(m).(SomeInterface); ok {
var dst SomeInterface
_, _ = dst.(T)
return dst.(T)
}
return m
}
type holder struct{}
func main() {
X[holder]()
}
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