} else {
    absl::MutexLock l(&gcs_file->buffer_mutex);
    size_t buffer_end = gcs_file->buffer_start + gcs_file->buffer.size();
    size_t copy_size = 0;
    if (offset < buffer_end && gcs_file->buffer_start) {
      copy_size = (std::min)(n, static_cast<size_t>(buffer_end - offset));
      memcpy(buffer,
             gcs_file->buffer.data() + (offset - gcs_file->buffer_start),

	return NewReaderSize(rd, defaultBufSize)
}

// Size returns the size of the underlying buffer in bytes.
func (b *Reader) Size() int { return len(b.buf) }

// Reset discards any buffered data, resets all state, and switches
// the buffered reader to read from r.
// Calling Reset on the zero value of [Reader] initializes the internal buffer
// to the default size.
// Calling b.Reset(b) (that is, resetting a [Reader] to itself) does nothing.

	// TLS, and in TLS the client speaks first, so we know there's
	// no unbuffered data. But we can double-check.
	if br.Buffered() > 0 {
		proxyConn.Close()
		return nil, fmt.Errorf("unexpected %d bytes of buffered data from CONNECT proxy %q",
			br.Buffered(), proxyAddress)
	}
	return proxyConn, nil
}

type proxier interface {
	// proxy returns a connection to addr.

		r.error(fmt.Errorf("debug/goobj: internal error: misuse of skip"))
	}
	if n < int64(len(r.tmp)) {
		// Since the data is so small, a just reading from the buffered
		// reader is better than flushing the buffer and seeking.
		r.readFull(r.tmp[:n])
	} else if n <= int64(r.b.Buffered()) {
		// Even though the data is not small, it has already been read.
		// Advance the buffer instead of seeking.
		for n > int64(len(r.tmp)) {

    public static void intercept_eachByte(
        @Receiver File self,
        int bufferLen,
        Closure<?> closure,
        @CallerClassName String consumer
    ) throws IOException {
        Instrumented.fileOpened(self, consumer);
        ResourceGroovyMethods.eachByte(self, bufferLen, closure);
    }

    @InterceptGroovyCalls
    @InstanceMethod

					select {
					case <-ctx.Done():
						return nil
					case out <- toSend:
					}
				}
				return nil
			},

			Subroute:    "some-subroute",
			OutCapacity: 1, // Only one message buffered.
			InCapacity:  0,
		}))
		errFatal(err)
	}
	const payloadSize = 512
	rng := rand.New(rand.NewSource(time.Now().UnixNano()))
	payload := make([]byte, payloadSize)
	_, err = rng.Read(payload)

		}
	}
}

func TestBigYAML(t *testing.T) {
	d := `
stuff: 1
`
	maxLen := 5 * 1024 * 1024
	bufferLen := 4 * 1024
	//  maxLen 5 M
	dd := strings.Repeat(d, 512*1024)
	r := NewDocumentDecoder(io.NopCloser(bytes.NewReader([]byte(dd[:maxLen-1]))))
	b := make([]byte, bufferLen)
	n, err := r.Read(b)
	if err != io.ErrShortBuffer {
		t.Fatalf("expected ErrShortBuffer: %d / %v", n, err)
	}

   * Prepares the HTTP headers and sends them to the server.
   *
   * For streaming requests with a body, headers must be prepared **before** the output stream has
   * been written to. Otherwise the body would need to be buffered!
   *
   * For non-streaming requests with a body, headers must be prepared **after** the output stream
   * has been written to and closed. This ensures that the `Content-Length` header field receives
   * the proper value.

        then:
        1 * listener.onOutput("error")
        1 * listener.onOutput(SystemProperties.instance.lineSeparator)
        0 * listener._

        when:
        System.out.print("buffered")
        System.err.print("error")
        System.err.flush()

        then:
        1 * listener.onOutput("error")
        0 * listener._
    }

    def routesStyledTextToListenersWhenStarted() {

	err = dec.d.unmarshal(v)

	// fixup token streaming state
	dec.tokenValueEnd()

	return err
}

// Buffered returns a reader of the data remaining in the Decoder's
// buffer. The reader is valid until the next call to [Decoder.Decode].
func (dec *Decoder) Buffered() io.Reader {
	return bytes.NewReader(dec.buf[dec.scanp:])
}

// readValue reads a JSON value into dec.buf.