func TestReadEmptyAtEOF(t *testing.T) {
	b := new(Buffer)
	slice := make([]byte, 0)
	n, err := b.Read(slice)
	if err != nil {
		t.Errorf("read error: %v", err)
	}
	if n != 0 {
		t.Errorf("wrong count; got %d want 0", n)
	}
}

func TestUnreadByte(t *testing.T) {
	b := new(Buffer)

	// check at EOF
	if err := b.UnreadByte(); err == nil {

	if err != nil {
		if list, ok := err.(scanner.ErrorList); ok {
			// If err is a scanner.ErrorList, its String will print just
			// the first error and then (+n more errors).
			// Instead, turn it into a new Error that will return
			// details for all the errors.
			for _, e := range list {
				fmt.Fprintln(os.Stderr, e)
			}
			os.Exit(2)
		}
		fatalf("parsing %s: %s", name, err)
	}
	return ast1
}

			t.Fatal("wrong panic:", r)
		}
	}()
	C.callPanic()
}

// Test that C code can return a value if it calls a Go function that
// causes a stack copy.
func testReturnAfterGrow(t *testing.T) {
	// Use a new goroutine so that we get a small stack.
	c := make(chan int)
	go func() {
		c <- int(C.returnAfterGrow())
	}()
	if got, want := <-c, 123456; got != want {
		t.Errorf("got %d want %d", got, want)
	}
}

	VADDPS.BCST 2032(DX)(AX*2), Z1, Z29  // 6261745858ac42f0070000
	// Forced EVEX encoding due to suffixes.
	VADDPD.BCST 2032(DX), X0, X0 // 62f1fd185882f0070000
	VADDPD.BCST 2032(DX), Y0, Y0 // 62f1fd385882f0070000
	// Test new Z-cases one-by-one.
	//
	// Zevex_i_r_k_rm.
	VCVTPS2PH $1, Z2, K5, Y21 // 62b37d4d1dd501
	VCVTPS2PH $2, Z21, K4, Y2 // 62e37d4c1dea02
	// Zevex_i_r_rm.
	VCVTPS2PH $1, Z2, Y21 // 62b37d481dd501

	return messWith("crc32-not-streamed.zip", func(b []byte) {
		// Corrupt foo.txt's final crc32 byte, in both
		// the file header and TOC. (0x7e -> 0x7f)
		b[0x11]++
		b[0x9d]++

		// TODO(bradfitz): add a new test that only corrupts
		// one of these values, and verify that that's also an
		// error. Currently, the reader code doesn't verify the
		// fileheader and TOC's crc32 match if they're both

pkg runtime/debug, func WriteHeapDump(uintptr)
pkg sync, method (*Pool) Get() interface{}
pkg sync, method (*Pool) Put(interface{})
pkg sync, type Pool struct
pkg sync, type Pool struct, New func() interface{}
pkg syscall (darwin-386), func FcntlFlock(uintptr, int, *Flock_t) error
pkg syscall (darwin-386), func Mlock([]uint8) error
pkg syscall (darwin-386), func Mlockall(int) error

pkg log/syslog (netbsd-arm64-cgo), func Dial(string, string, Priority, string) (*Writer, error)
pkg log/syslog (netbsd-arm64-cgo), func NewLogger(Priority, int) (*log.Logger, error)
pkg log/syslog (netbsd-arm64-cgo), func New(Priority, string) (*Writer, error)
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Alert(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Close() error

pkg syscall (freebsd-arm64), const SYS_THR_KILL2 = 481
pkg syscall (freebsd-arm64), const SYS_THR_KILL2 ideal-int
pkg syscall (freebsd-arm64), const SYS_THR_NEW = 455
pkg syscall (freebsd-arm64), const SYS_THR_NEW ideal-int
pkg syscall (freebsd-arm64), const SYS_THR_SELF = 432
pkg syscall (freebsd-arm64), const SYS_THR_SELF ideal-int
pkg syscall (freebsd-arm64), const SYS_THR_SET_NAME = 464

pkg syscall (freebsd-386), const SYS_CAP_ENTER ideal-int
pkg syscall (freebsd-386), const SYS_CAP_GETMODE ideal-int
pkg syscall (freebsd-386), const SYS_CAP_GETRIGHTS ideal-int
pkg syscall (freebsd-386), const SYS_CAP_NEW ideal-int
pkg syscall (freebsd-386), const SYS_CHDIR ideal-int
pkg syscall (freebsd-386), const SYS_CHFLAGS ideal-int
pkg syscall (freebsd-386), const SYS_CHMOD ideal-int

		testReadFile(t, src.File[i], &wt)
	}

	// make a new zip file copying the old compressed data.
	buf2 := new(bytes.Buffer)
	dst := NewWriter(buf2)
	for _, f := range src.File {
		if err := dst.Copy(f); err != nil {
			t.Fatal(err)
		}
	}
	if err := dst.Close(); err != nil {
		t.Fatal(err)
	}

	// read the new one back
	r, err := NewReader(bytes.NewReader(buf2.Bytes()), int64(buf2.Len()))