}

func (tw *baseTimeoutWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
	tw.mu.Lock()
	defer tw.mu.Unlock()

	if tw.timedOut {
		return nil, nil, http.ErrHandlerTimeout
	}

	// the outer ResponseWriter object returned by WrapForHTTP1Or2 implements
	// http.Hijacker if the inner object (tw.w) implements http.Hijacker.
	conn, rw, err := tw.w.(http.Hijacker).Hijack()
	if err == nil {
		tw.hijacked = true

	rl.recordStatus(status)
	rl.w.WriteHeader(status)
}

func (rl *respLogger) Hijack() (net.Conn, *bufio.ReadWriter, error) {
	rl.hijacked = true

	// the outer ResponseWriter object returned by WrapForHTTP1Or2 implements
	// http.Hijacker if the inner object (rl.w) implements http.Hijacker.
	return rl.w.(http.Hijacker).Hijack()
}

func (rl *respLogger) recordStatus(status int) {
	rl.mutex.Lock()

import static org.junit.Assert.assertEquals;

import org.junit.Test;

public class LumberJackTest {
    @Test
    public void singsTheSong() {
        LumberJack jack = new LumberJack();
        jack.sing();
    }

        <dependency org="com.android.tools.ddms" name="ddmlib" rev="24.5.0" force="true" conf="runtime-&gt;compile(*),runtime(*),master(*)"/>
        <dependency org="com.android.tools.jack" name="jack-api" rev="0.9.0" force="true" conf="runtime-&gt;compile(*),runtime(*),master(*)"/>
        <dependency org="com.android.tools.jill" name="jill-api" rev="0.9.0" force="true" conf="runtime-&gt;compile(*),runtime(*),master(*)"/>

-minussign:*:21:root
# Next line is invalid (empty group name)
:*:22:root

daemon:*:1:root
    indented:*:7:root
# comment:*:4:found
     # comment:*:4:found
kmem:*:2:root
manymembers:x:777:jill,jody,john,jack,jov,user777
` + largeGroup()

func largeGroup() (res string) {
	var b strings.Builder
	b.WriteString("largegroup:x:1000:user1")
	for i := 2; i <= 7500; i++ {
		fmt.Fprintf(&b, ",user%d", i)
	}

			line[0] == '+' || line[0] == '-' {
			continue
		}

		// Format of /etc/group is
		// 	groupname:password:GID:user_list
		// for example
		// 	wheel:x:10:john,paul,jack
		//	tcpdump:x:72:
		listIdx := bytes.LastIndexByte(line, ':')
		if listIdx == -1 || listIdx == len(line)-1 {
			// No commas, or empty group list.
			continue
		}
		if bytes.Count(line[:listIdx], colon) != 2 {