golang buf_nommap 代码
文件路径：/src/cmd/internal/bio/buf_nommap.go
// Copyright 2019 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.
//go:build !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd
// +build !darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd
package bio
func (r *Reader) sliceOS(length uint64) ([]byte, bool) {
return nil, false
}