// Copyright 2013 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 linux

package runtime

import (
	"internal/runtime/atomic"
	"internal/runtime/syscall"
	"unsafe"
)

var (
	epfd           int32         = -1 // epoll descriptor
	netpollEventFd uintptr            // eventfd for netpollBreak

// Copyright 2013 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 types

import (
	"go/ast"
	"go/token"
	. "internal/types/errors"
)

// labels checks correct label use in body.
func (check *Checker) labels(body *ast.BlockStmt) {
	// set of all labels in this body
	all := NewScope(nil, body.Pos(), body.End(), "label")

// Copyright 2011 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 bzip2

import (
	"cmp"
	"slices"
)

// A huffmanTree is a binary tree which is navigated, bit-by-bit to reach a
// symbol.
type huffmanTree struct {
	// nodes contains all the non-leaf nodes in the tree. nodes[0] is the

// Copyright 2014 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_test

import (
	"errors"
	"fmt"
	"internal/godebug"
	"internal/poll"
	"internal/syscall/windows"
	"internal/syscall/windows/registry"
	"internal/testenv"
	"io"
	"io/fs"
	"os"
	"os/exec"
	"path/filepath"
	"reflect"
	"runtime"
	"slices"
	"strings"

)

/*
Derived from Plan 9 from User Space's src/libmach/elf.h, elf.c
https://github.com/9fans/plan9port/tree/master/src/libmach/

	Copyright © 2004 Russ Cox.
	Portions Copyright © 2008-2010 Google Inc.
	Portions Copyright © 2010 The Go Authors.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal

// 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 help implements the “go help” command.
package help

import (
	"bufio"
	"fmt"
	"io"
	"os"
	"strings"
	"text/template"
	"unicode"
	"unicode/utf8"

	"cmd/go/internal/base"
	"cmd/internal/telemetry"
)

// Copyright 2011 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 net

import (
	"internal/syscall/windows"
	"os"
	"syscall"
	"unsafe"
)

// adapterAddresses returns a list of IP adapter and address
// structures. The structure contains an IP adapter and flattened
// multiple IP addresses including unicast, anycast and multicast

// Copyright 2015 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 unix

// When cross-compiling with clang to linux/armv5, atomics are emulated
// and cause a compiler warning. This results in a build failure since
// cgo uses -Werror. See #65290.
#pragma GCC diagnostic ignored "-Wpragmas"
#pragma GCC diagnostic ignored "-Wunknown-warning-option"

// Copyright 2010 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 mime implements parts of the MIME spec.
package mime

import (
	"fmt"
	"slices"
	"strings"
	"sync"
)

var (
	mimeTypes      sync.Map // map[string]string; ".Z" => "application/x-compress"
	mimeTypesLower sync.Map // map[string]string; ".z" => "application/x-compress"

// Copyright 2013 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:generate go run gen.go gen_index.go -output tables.go
//go:generate go run gen_parents.go

package compact

// TODO: Remove above NOTE after:
// - verifying that tables are dropped correctly (most notably matcher tables).

import (
	"strings"