golang issue52846 代码
文件路径：/test/fixedbugs/issue52846.go
/ compile
/ 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.
/ Issue 52846: gofrontend crashed with alias as map key type
package p
type S struct {
F string
}
type A = S
var M = map[A]int{A{""}: 0}