// 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 time

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

// These are predefined layouts for use in [Time.Format] and [time.Parse].
// The reference time used in these layouts is the specific time stamp:
//
//	01/02 03:04:05PM '06 -0700
//

// 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.

// This file implements typechecking of expressions.

package types2

import (
	"cmd/compile/internal/syntax"
	"fmt"
	"go/constant"
	"go/token"
	. "internal/types/errors"
	"strings"
)

/*
Basic algorithm:

// 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 tls

import (
	"bytes"
	"context"
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rand"
	"crypto/rsa"
	"crypto/x509"
	"crypto/x509/pkix"
	"encoding/base64"
	"encoding/hex"
	"encoding/pem"
	"errors"
	"fmt"
	"internal/byteorder"
	"io"
	"math/big"

// 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 atomic_test

import (
	"fmt"
	"reflect"
	"runtime"
	"runtime/debug"
	"strings"
	. "sync/atomic"
	"testing"
	"unsafe"
)

// Tests of correct behavior, without contention.
// (Does the function work as advertised?)
//

		{"go1.19.0", "", "go1.19.0"},         // no file version specified
		{"go1.20", "go1.20.1", "go1.20"},     // file upgrade ignored
		{"go1.20.1", "go1.20", "go1.20.1"},   // file upgrade ignored
		{"go1.20.1", "go1.21", "go1.21"},     // file upgrade permitted
		{"go1.20.1", "go1.19", "go1.20.1"},   // file downgrade not permitted

}

var truncateRoundTests = []struct {
	t Time
	d Duration
}{
	{Date(-1, January, 1, 12, 15, 30, 5e8, UTC), 3},
	{Date(-1, January, 1, 12, 15, 31, 5e8, UTC), 3},
	{Date(2012, January, 1, 12, 15, 30, 5e8, UTC), Second},
	{Date(2012, January, 1, 12, 15, 31, 5e8, UTC), Second},
	{Unix(-19012425939, 649146258), 7435029458905025217}, // 5.8*d rounds to 6*d, but .8*d+.8*d < 0 < d
}

func TestTruncateRound(t *testing.T) {

// 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.

package main

import (
	"bytes"
	"encoding/json"
	"flag"
	"fmt"
	"io"
	"io/fs"
	"log"
	"os"
	"os/exec"
	"path/filepath"
	"reflect"
	"regexp"
	"runtime"
	"strconv"
	"strings"
	"time"
)

func cmdtest() {
	gogcflags = os.Getenv("GO_GCFLAGS")

// 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 windows

import (
	"syscall"
	"unsafe"
)

const (
	NameUnknown          = 0
	NameFullyQualifiedDN = 1
	NameSamCompatible    = 2
	NameDisplay          = 3
	NameUniqueId         = 6
	NameCanonical        = 7
	NameUserPrincipal    = 8
	NameCanonicalEx      = 9

// 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 testdir_test runs tests in the GOROOT/test directory.
package testdir_test

import (
	"bytes"
	"encoding/json"
	"errors"
	"flag"
	"fmt"
	"go/build"
	"go/build/constraint"
	"hash/fnv"
	"internal/testenv"
	"io"
	"io/fs"
	"log"
	"os"
	"os/exec"

// 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 syntax

import (
	"sort"
	"strings"
	"unicode"
	"unicode/utf8"
)

// An Error describes a failure to parse a regular expression
// and gives the offending expression.
type Error struct {
	Code ErrorCode
	Expr string
}

func (e *Error) Error() string {