xx, ok := x.(PrivateKey)
	if !ok {
		return false
	}
	return subtle.ConstantTimeCompare(priv, xx) == 1
}

// Seed returns the private key seed corresponding to priv. It is provided for
// interoperability with RFC 8032. RFC 8032's private keys correspond to seeds
// in this package.
func (priv PrivateKey) Seed() []byte {
	return bytes.Clone(priv[:SeedSize])
}

	// string should be returned for that entry.
	Columns() []string

	// Close closes the rows iterator.
	Close() error

	// Next is called to populate the next row of data into
	// the provided slice. The provided slice will be the same
	// size as the Columns() are wide.
	//
	// Next should return io.EOF when there are no more rows.
	//
	// The dest should not be written to outside of Next. Care

	xText              // encoding.TextMarshaler or encoding.TextUnmarshaler
)

var userTypeCache sync.Map // map[reflect.Type]*userTypeInfo

// validUserType returns, and saves, the information associated with user-provided type rt.
// If the user type is not valid, err will be non-nil. To be used when the error handler
// is not set up.
func validUserType(rt reflect.Type) (*userTypeInfo, error) {
	if ui, ok := userTypeCache.Load(rt); ok {

	"io"
	"os"
	"path/filepath"
	"sort"
	"time"
	"unsafe"
)

// metaMerge provides state and methods to help manage the process
// of selecting or merging meta data files. There are three cases
// of interest here: the "-pcombine" flag provided by merge, the
// "-pkg" option provided by all merge/subtract/intersect, and
// a regular vanilla merge with no package selection
//

	IgnoreBranchErrors bool

	// If go115UsesCgo is set, the type checker expects the
	// _cgo_gotypes.go file generated by running cmd/cgo to be
	// provided as a package source file. Qualified identifiers
	// referring to package C will be resolved to cgo-provided
	// declarations within _cgo_gotypes.go.
	//
	// It is an error to set both FakeImportC and go115UsesCgo.
	go115UsesCgo bool

// A File is a handle for a file belonging to a [FileSet].
// A File has a name, size, and line offset table.
type File struct {
	name string // file name as provided to AddFile
	base int    // Pos value range for this file is [base...base+size]
	size int    // file size as provided to AddFile

	// lines and infos are protected by mutex
	mutex sync.Mutex

	errorf := func(tpar, targ Type, arg *operand) {
		// provide a better error message if we can
		targs := u.inferred(tparams)
		if targs[0] == nil {
			// The first type parameter couldn't be inferred.
			// If none of them could be inferred, don't try
			// to provide the inferred type in the error msg.
			allFailed := true
			for _, targ := range targs {
				if targ != nil {

// Copyright 2017 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 httpproxy provides support for HTTP proxy determination
// based on environment variables, as provided by net/http's
// ProxyFromEnvironment function.
//
// The API is not subject to the Go 1 compatibility promise and may change at
// any time.
package httpproxy

import (

}

// formatHeader writes log header to buf in following order:
//   - l.prefix (if it's not blank and Lmsgprefix is unset),
//   - date and/or time (if corresponding flags are provided),
//   - file and line number (if corresponding flags are provided),
//   - l.prefix (if it's not blank and Lmsgprefix is set).
func formatHeader(buf *[]byte, t time.Time, prefix string, flag int, file string, line int) {
	if flag&Lmsgprefix == 0 {

		return orig, false, nil
	}

	// A module that is not even in the build list necessarily cannot provide
	// any imported packages. Mark as direct only the direct modules that are
	// still in the build list. (We assume that any module path that provided a
	// direct import before the edit continues to do so after. There are a few