golang manual 代码
文件路径：/src/cmd/compile/internal/types2/testdata/manual.go
/ 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.
/ This file is tested when running "go test -run Manual"
/ without source arguments. Use for one-off debugging.
package p