// Copyright 2012 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 runtime

import _ "unsafe" // for linkname

const (
	// vdsoArrayMax is the byte-size of a maximally sized array on this architecture.
	// See cmd/compile/internal/amd64/galign.go arch.MAXWIDTH initialization.
	vdsoArrayMax = 1<<50 - 1
)

// Copyright 2016 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 os

import (
	"errors"
	_ "unsafe" // for linkname
)

//go:linkname executablePath
var executablePath string // set by ../runtime/os_darwin.go

var initCwd, initCwdErr = Getwd()

func executable() (string, error) {
	ep := executablePath
	if len(ep) == 0 {

// errorcheck

// Copyright 2020 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.

// Tests that errors are reported for misuse of linkname.
package p

import _ "unsafe"

type t int

var x, y int

func F[T any](T) {}

//go:linkname x ok

// ERROR "//go:linkname must refer to declared function or variable"

	// environment variable values (currently we only force GOTRACEBACK=none)
	//
	// Other packages may also disable specific functionality when secure mode
	// is enabled (determined by using linkname to call isSecureMode).

	secureEnv()
}

func secureEnv() {
	var hasTraceback bool
	for i := 0; i < len(envs); i++ {
		if stringslite.HasPrefix(envs[i], "GOTRACEBACK=") {
			hasTraceback = true

//go:build !faketime && !windows && !(linux && amd64)

package runtime

import _ "unsafe" // for go:linkname

// time_now should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - gitee.com/quant1x/gox
//   - github.com/phuslu/log
//   - github.com/sethvargo/go-limiter
//   - github.com/ulule/limiter/v3
//

// license that can be found in the LICENSE file.

// Support for test coverage with redesigned coverage implementation.

package testing

import (
	"fmt"
	"internal/goexperiment"
	"os"
	_ "unsafe" // for linkname
)

// cover2 variable stores the current coverage mode and a
// tear-down function to be called at the end of the testing run.
var cover2 struct {
	mode        string

// license that can be found in the LICENSE file.

//go:build unix || js || wasip1 || windows

package net

import (
	"context"
	"internal/poll"
	"net/netip"
	"runtime"
	"syscall"
	_ "unsafe" // for linkname
)

// probe probes IPv4, IPv6 and IPv4-mapped IPv6 communication
// capabilities which are controlled by the IPV6_V6ONLY socket option
// and kernel configuration.
//

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build 386

package atomic

import "unsafe"

// Export some functions via linkname to assembly in sync/atomic.
//
//go:linkname Load
//go:linkname Loadp
//go:linkname LoadAcquintptr

//go:nosplit
//go:noinline
func Load(ptr *uint32) uint32 {
	return *ptr
}

//go:nosplit

	"sync/atomic"
	"time"
	_ "unsafe"
)

// defaultNS is the default name servers to use in the absence of DNS configuration.
//
// defaultNS should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/pojntfx/hydrapp/hydrapp
//   - github.com/mtibben/androiddnsfix
//   - github.com/metacubex/mihomo
//
// Do not remove or change the type signature.

	return runtime_cmpstring(a, b)
}

// runtime.cmpstring calls are emitted by the compiler.
//
// runtime.cmpstring should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - gitee.com/zhaochuninhefei/gmgo
//   - github.com/bytedance/gopkg
//   - github.com/songzhibin97/gkit
//
// Do not remove or change the type signature.