//
// If dir is ".", Sub returns fsys unchanged.
// Otherwise, if fs implements [SubFS], Sub returns fsys.Sub(dir).
// Otherwise, Sub returns a new [FS] implementation sub that,
// in effect, implements sub.Open(name) as fsys.Open(path.Join(dir, name)).
// The implementation also translates calls to ReadDir, ReadFile, and Glob appropriately.
//
// Note that Sub(os.DirFS("/"), "prefix") is equivalent to os.DirFS("/prefix")

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

package strings_test

// Derived from bytes/compare_test.go.
// Benchmarks omitted since the underlying implementation is identical.

import (
	"internal/testenv"
	. "strings"
	"testing"
	"unsafe"
)

var compareTests = []struct {
	a, b string
	i    int
}{
	{"", "", 0},
	{"a", "", 1},
	{"", "a", -1},

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

//go:build (freebsd || netbsd || openbsd) && gc

#include "textflag.h"

// System call support for 386 BSD

// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.

TEXT	·Syscall(SB),NOSPLIT,$0-28
	JMP	syscall·Syscall(SB)

TEXT	·Syscall6(SB),NOSPLIT,$0-40
	JMP	syscall·Syscall6(SB)

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

//go:build (darwin || dragonfly || freebsd || netbsd || openbsd) && gc

#include "textflag.h"

// System call support for AMD64 BSD

// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.

TEXT	·Syscall(SB),NOSPLIT,$0-56
	JMP	syscall·Syscall(SB)

TEXT	·Syscall6(SB),NOSPLIT,$0-80
	JMP	syscall·Syscall6(SB)

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

//go:build (freebsd || netbsd || openbsd) && gc

#include "textflag.h"

// System call support for ARM BSD

// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.

TEXT	·Syscall(SB),NOSPLIT,$0-28
	B	syscall·Syscall(SB)

TEXT	·Syscall6(SB),NOSPLIT,$0-40
	B	syscall·Syscall6(SB)

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

//go:build (darwin || freebsd || netbsd || openbsd) && gc

#include "textflag.h"

// System call support for RISCV64 BSD

// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.

TEXT	·Syscall(SB),NOSPLIT,$0-56
	JMP	syscall·Syscall(SB)

TEXT	·Syscall6(SB),NOSPLIT,$0-80
	JMP	syscall·Syscall6(SB)

	restore(randState, randInc uint64)
}

// The functions in pcg implement a 32 bit PRNG with a 64 bit period: pcg xsh rr
// 64 32. See https://www.pcg-random.org/ for more information. This
// implementation is geared specifically towards the needs of fuzzing: Simple
// creation and use, no reproducibility, no concurrency safety, just the
// necessary methods, optimized for speed.

var globalInc atomic.Uint64 // PCG stream

// 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 boring provides access to BoringCrypto implementation functions.
// Check the constant Enabled to find out whether BoringCrypto is available.
// If BoringCrypto is not available, the functions in this package all panic.
package boring

// Enabled reports whether BoringCrypto is available.

// slices package to implement some `sort` functions faster. However, until
// the bootstrap compiler uses Go 1.21 or later, we keep a fallback version
// in sort_impl_120.go that retains the old implementation.

package sort

import "slices"

func intsImpl(x []int)         { slices.Sort(x) }
func float64sImpl(x []float64) { slices.Sort(x) }
func stringsImpl(x []string)   { slices.Sort(x) }

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

package os

import (
	"syscall"
	"time"
)

// A fileStat is the implementation of FileInfo returned by Stat and Lstat.
type fileStat struct {
	name    string
	size    int64
	mode    FileMode
	modTime time.Time
	sys     any
}

func (fs *fileStat) Size() int64        { return fs.size }