trailers, err := http2commaSeparatedTrailers(req)
	if err != nil {
		return err
	}
	hasTrailers := trailers != ""
	contentLen := http2actualContentLength(req)
	hasBody := contentLen != 0
	hdrs, err := cc.encodeHeaders(req, cs.requestedGzip, trailers, contentLen)
	if err != nil {
		return err
	}

	// Write the request.
	endStream := !hasBody && !hasTrailers
	cs.sentHeaders = true

	}
}

func TestIssue39757(t *testing.T) {
	testenv.MustHaveGoBuild(t)

	mustHaveDWARF(t)

	t.Parallel()

	// In this bug the DWARF line table contents for the last couple of
	// instructions in a function were incorrect (bad file/line). This
	// test verifies that all of the line table rows for a function
	// of interest have the same file (no "autogenerated").
	//

	}
	if excluded(okgoos, goos) || excluded(okgoarch, goarch) {
		return false
	}

	// Omit test files.
	if strings.Contains(name, "_test") {
		return false
	}

	// Check file contents for //go:build lines.
	for _, p := range strings.Split(readfile(file), "\n") {
		p = strings.TrimSpace(p)
		if p == "" {
			continue
		}
		code := p
		i := strings.Index(code, "//")
		if i > 0 {

				// Don't type-check right away because the function may
				// be part of a type definition to which the function
				// body refers. Instead, type-check as soon as possible,
				// but before the enclosing scope contents changes (go.dev/issue/22992).
				check.later(func() {
					check.funcBody(decl, "<function literal>", sig, e.Body, iota)
				}).describef(e, "func literal")
			}
			x.mode = value
			x.typ = sig

		go func() {
			defer wg.Done()

			contentLen := fmt.Sprintf("Content-Length: %d", test.contentLength)
			if test.chunked {
				contentLen = "Transfer-Encoding: chunked"
			}
			_, err := fmt.Fprintf(conn, "POST /?readbody=%v HTTP/1.1\r\n"+
				"Connection: close\r\n"+
				"%s\r\n"+
				"Expect: %s\r\nHost: foo\r\n\r\n",
				test.readBody, contentLen, test.expectation)
			if err != nil {

	for _, e := range extensions {
		if e.Id.Equal(oid) {
			return true
		}
	}
	return false
}

// marshalSANs marshals a list of addresses into a the contents of an X.509
// SubjectAlternativeName extension.
func marshalSANs(dnsNames, emailAddresses []string, ipAddresses []net.IP, uris []*url.URL) (derBytes []byte, err error) {
	var rawValues []asn1.RawValue

// the hash digest instead of creating a new one for a given chunk and finalizing it.
//
//	// Assume hashfd and addr are already configured using the setup process.
//	hash := os.NewFile(hashfd, "sha1")
//	// Hash the contents of a file.
//	f, _ := os.Open("/tmp/linux-4.10-rc7.tar.xz")
//	b := make([]byte, 4096)
//	for {
//	    n, err := f.Read(b)
//	    if err == io.EOF {
//	        break
//	    }

	t.Parallel()

	filename := "rumpelstilzchen"
	contents, err := ReadFile(filename)
	if err == nil {
		t.Fatalf("ReadFile %s: error expected, none found", filename)
	}

	filename = "read_test.go"
	contents, err = ReadFile(filename)
	if err != nil {
		t.Fatalf("ReadFile %s: %v", filename, err)
	}

	checkNamedSize(t, filename, int64(len(contents)))
}

func TestWriteFile(t *testing.T) {
	t.Parallel()

	"internal/filepathlite"
	"io"
	"io/fs"
	"slices"
)

type readdirMode int

const (
	readdirName readdirMode = iota
	readdirDirEntry
	readdirFileInfo
)

// Readdir reads the contents of the directory associated with file and
// returns a slice of up to n [FileInfo] values, as would be returned
// by [Lstat], in directory order. Subsequent calls on the same file will yield
// further FileInfos.
//

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

package net

import (
	"internal/poll"
	"io"
	"os"
)

const supportsSendfile = true

// sendFile copies the contents of r to c using the sendfile
// system call to minimize copies.
//
// if handled == true, sendFile returns the number (potentially zero) of bytes
// copied and any non-EOF error.
//