r := NewChunkedReader(bufio.NewReaderSize(&b, 16))
		buf := make([]byte, len(fillBufChunk)+len(shortChunk))
		n, err := r.Read(buf)
		if n != len(fillBufChunk) || err != nil {
			t.Errorf("Read = %d, %v; want %d, nil", n, err, len(fillBufChunk))
		}
		buf = buf[:n]
		if string(buf) != fillBufChunk {
			t.Errorf("Read = %q; want %q", buf, fillBufChunk)
		}

		n, err = r.Read(buf)
		if n != len(shortChunk) || err != io.EOF {

			}
			fatalf(msg+": %v", err)
		}
		var buf bytes.Buffer
		buf.WriteString("HTTP/1.1 200 OK\r\n")
		if test.chunked {
			buf.WriteString("Transfer-Encoding: chunked\r\n")
		} else {
			buf.WriteString("Content-Length: 1000000\r\n")
		}
		var wr io.Writer = &buf
		if test.chunked {
			wr = internal.NewChunkedWriter(wr)
		}
		if test.compressed {
			buf.WriteString("Content-Encoding: gzip\r\n")

func (c *conn) finalFlush() {
	if c.bufr != nil {
		// Steal the bufio.Reader (~4KB worth of memory) and its associated
		// reader for a future connection.
		putBufioReader(c.bufr)
		c.bufr = nil
	}

	if c.bufw != nil {
		c.bufw.Flush()
		// Steal the bufio.Writer (~4KB worth of memory) and its associated
		// writer for a future connection.
		putBufioWriter(c.bufw)
		c.bufw = nil
	}
}

	// Encode an int slice.
	buf := new(bytes.Buffer)
	slice := []int{1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
	err := NewEncoder(buf).Encode(slice)
	if err != nil {
		t.Fatal("encode:", err)
	}
	// Reach into the buffer and smash the count to make the encoded slice very long.
	buf.Bytes()[buf.Len()-len(slice)-1] = 0xfa
	// Decode and see error.
	err = NewDecoder(buf).Decode(&slice)
	if err == nil {

		t.Fatal(err)
	}
	defer c.Close()
	_, err = fmt.Fprintf(c, "GET /..\x00 HTTP/1.0\r\n\r\n")
	if err != nil {
		t.Fatal(err)
	}
	var got bytes.Buffer
	bufr := bufio.NewReader(io.TeeReader(c, &got))
	res, err := ReadResponse(bufr, nil)
	if err != nil {
		t.Fatal("ReadResponse: ", err)
	}
	if res.StatusCode == 200 {
		t.Errorf("got status 200; want an error. Body is:\n%s", got.Bytes())
	}
}

		t.Fatal(err)
	}

	if _, err := stdin.Write([]byte("O:hi\n")); err != nil {
		t.Fatal(err)
	}
	buf := make([]byte, 5)
	n, err := io.ReadFull(stdout, buf)
	if n != len(buf) || err != nil || string(buf) != "O:hi\n" {
		t.Fatalf("ReadFull = %d, %v, %q", n, err, buf[:n])
	}
	go cancel()

	if err := c.Wait(); err == nil {
		t.Fatal("expected Wait failure")
	}
}

}

func TestWriterReset(t *testing.T) {
	var buf1, buf2, buf3, buf4, buf5 strings.Builder
	w := NewWriter(&buf1)
	w.WriteString("foo")

	w.Reset(&buf2) // and not flushed
	w.WriteString("bar")
	w.Flush()
	if buf1.String() != "" {
		t.Errorf("buf1 = %q; want empty", buf1.String())
	}
	if buf2.String() != "bar" {
		t.Errorf("buf2 = %q; want bar", buf2.String())
	}

import (
	"bytes"
	"regexp"
	"runtime"
	"strconv"
)

func main() {
	buf1 := make([]byte, 1000)
	buf2 := make([]byte, 1000)

	runtime.Stack(buf1, false)      // CALL is last instruction on this line
	n := runtime.Stack(buf2, false) // CALL is followed by load of result from stack

	buf1 = buf1[:bytes.IndexByte(buf1, 0)]
	buf2 = buf2[:n]

	re := regexp.MustCompile(`(?m)^main\.main\(\)\n.*/issue7690.go:([0-9]+)`)

	arr    [64]byte
	arrPtr *[64]byte
	buf1   []byte
	buf2   []byte
	str1   string
	str2   string
}

func (b *Buffer) foo() { // ERROR "b does not escape$"
	b.buf1 = b.buf1[1:2]   // ERROR "\(\*Buffer\).foo ignoring self-assignment in b.buf1 = b.buf1\[1:2\]$"
	b.buf1 = b.buf1[1:2:3] // ERROR "\(\*Buffer\).foo ignoring self-assignment in b.buf1 = b.buf1\[1:2:3\]$"

	arr    [64]byte
	arrPtr *[64]byte
	buf1   []byte
	buf2   []byte
	str1   string
	str2   string
}

func (b *Buffer) foo() { // ERROR "b does not escape$"
	b.buf1 = b.buf1[1:2]   // ERROR "\(\*Buffer\).foo ignoring self-assignment in b.buf1 = b.buf1\[1:2\]$"
	b.buf1 = b.buf1[1:2:3] // ERROR "\(\*Buffer\).foo ignoring self-assignment in b.buf1 = b.buf1\[1:2:3\]$"