// packages:
//
//  1. For each package marked with pkgInAll, the module path that provided that
//     package is included as a root.
//  2. For all packages, the module that provided that package either remains
//     selected at the same version or is upgraded by the dependencies of a
//     root.
//
// If any module that provided a package has been upgraded above its previous

//sys	CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error)
//sys	GetFileType(filehandle Handle) (n uint32, err error)
//sys	CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW
//sys	CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext

// AndInt32 atomically performs a bitwise AND operation on *addr using the bitmask provided as mask
// and returns the old value.
// Consider using the more ergonomic and less error-prone [Int32.And] instead.
func AndInt32(addr *int32, mask int32) (old int32)

// AndUint32 atomically performs a bitwise AND operation on *addr using the bitmask provided as mask
// and returns the old value.

)

// ValueConverter is the interface providing the ConvertValue method.
//
// Various implementations of ValueConverter are provided by the
// driver package to provide consistent implementations of conversions
// between drivers. The ValueConverters have several uses:
//
//   - converting from the [Value] types as provided by the sql package
//     into a database table's specific column type and making sure it

// 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.

// Package nettest provides utilities for network testing.
package nettest

import (
	"errors"
	"fmt"
	"net"
	"os"
	"os/exec"
	"runtime"
	"strconv"
	"strings"
	"sync"
	"time"
)

var (
	stackOnce               sync.Once
	ipv4Enabled             bool

	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 {

stderr '^go: example\.net/m imports\n\texample\.net/y: package example\.net/y provided by example\.net/y at latest version v0\.1\.0 but not at required version v0\.2\.0-pre$'

}

// The Range interface provides a range. It's equivalent to and satisfied by
// ast.Node.
type Range interface {
	Pos() token.Pos // position of first character belonging to the node
	End() token.Pos // position of first character immediately after the node
}

// ReportRangef is a helper function that reports a Diagnostic using the
// range provided. ast.Node values can be passed in as the range because

	}
	return &error_{check: check, code: code}
}

// addf adds formatted error information to err.
// It may be called multiple times to provide additional information.
// The position of the first call to addf determines the position of the reported Error.
// Subsequent calls to addf provide additional information in the form of additional lines
// in the error message (types2) or continuation errors identified by a tab-indented error

// OutBuf is a buffered file writer.
//
// It is similar to the Writer in cmd/internal/bio with a few small differences.
//
// First, it tracks the output architecture and uses it to provide
// endian helpers.
//
// Second, it provides a very cheap offset counter that doesn't require
// any system calls to read the value.
//
// Third, it also mmaps the output file (if available). The intended usage is:
//   - Mmap the output file