w.Reset(&buf4)
	w2 := NewWriter(w)
	w2.WriteString("recur")
	w2.Flush()
	if buf4.String() != "recur" {
		t.Errorf("buf4 = %q, want %q", buf4.String(), "recur")
	}
	w.Reset(&buf5)
	w2.Reset(w)
	w2.WriteString("recur2")
	w2.Flush()
	if buf5.String() != "recur2" {
		t.Errorf("buf5 = %q, want %q", buf5.String(), "recur2")
	}
}

func TestReaderDiscard(t *testing.T) {

func (f *File) walk(x interface{}, context astContext, visit func(*File, interface{}, astContext)) {
	visit(f, x, context)
	switch n := x.(type) {
	case *ast.Expr:
		f.walk(*n, context, visit)

	// everything else just recurs
	default:
		f.walkUnexpected(x, context, visit)

	case nil:

	// These are ordered and grouped to match ../../go/ast/ast.go
	case *ast.Field:
		if len(n.Names) == 0 && context == ctxField {

pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SCA = 24583
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SCA ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SECTRA = 34523
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SECTRA ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SECUREDATA = 34669
pkg syscall (netbsd-arm64-cgo), const ETHERTYPE_SECUREDATA ideal-int

		"../foo",
		"/foo",
		"a/b/../../../c",
	} {
		var buf bytes.Buffer
		tw := NewWriter(&buf)
		tw.WriteHeader(&Header{
			Name: path,
		})
		const securePath = "secure"
		tw.WriteHeader(&Header{
			Name: securePath,
		})
		tw.Close()

		tr := NewReader(&buf)
		h, err := tr.Next()
		if err != ErrInsecurePath {

-->

## Introduction {#intro}

Go's emphasis on backwards compatibility is one of its key strengths.
There are, however, times when we cannot maintain complete compatibility.
If code depends on buggy (including insecure) behavior,
then fixing the bug will break that code.
New features can also have similar impacts:
enabling the HTTP/2 use by the HTTP client broke programs
connecting to servers with buggy HTTP/2 implementations.

	ErrFieldTooLong    = errors.New("archive/tar: header field too long")
	ErrWriteAfterClose = errors.New("archive/tar: write after close")
	ErrInsecurePath    = errors.New("archive/tar: insecure file path")
	errMissData        = errors.New("archive/tar: sparse file references non-existent data")
	errUnrefData       = errors.New("archive/tar: sparse file contains unreferenced data")

pkg net/http, type Cookie struct, Name string
pkg net/http, type Cookie struct, Path string
pkg net/http, type Cookie struct, Raw string
pkg net/http, type Cookie struct, RawExpires string
pkg net/http, type Cookie struct, Secure bool
pkg net/http, type Cookie struct, Unparsed []string
pkg net/http, type Cookie struct, Value string
pkg net/http, type CookieJar interface { Cookies, SetCookies }

pkg crypto/tls, type CertificateRequestInfo struct, Version uint16
pkg crypto/tls, type CipherSuite struct
pkg crypto/tls, type CipherSuite struct, ID uint16
pkg crypto/tls, type CipherSuite struct, Insecure bool
pkg crypto/tls, type CipherSuite struct, Name string
pkg crypto/tls, type CipherSuite struct, SupportedVersions []uint16
pkg debug/dwarf, const AttrAddrBase = 115
pkg debug/dwarf, const AttrAddrBase Attr

var (
	ErrFormat       = errors.New("zip: not a valid zip file")
	ErrAlgorithm    = errors.New("zip: unsupported compression algorithm")
	ErrChecksum     = errors.New("zip: checksum error")
	ErrInsecurePath = errors.New("zip: insecure file path")
)

// A Reader serves content from a ZIP archive.
type Reader struct {
	r             io.ReaderAt
	File          []*File
	Comment       string
	decompressors map[uint16]Decompressor

pkg syscall (netbsd-386), const ETHERTYPE_RETIX = 33010
pkg syscall (netbsd-386), const ETHERTYPE_REVARP = 32821
pkg syscall (netbsd-386), const ETHERTYPE_SCA = 24583
pkg syscall (netbsd-386), const ETHERTYPE_SECTRA = 34523
pkg syscall (netbsd-386), const ETHERTYPE_SECUREDATA = 34669
pkg syscall (netbsd-386), const ETHERTYPE_SGITW = 33150
pkg syscall (netbsd-386), const ETHERTYPE_SG_BOUNCE = 32790