F_DUPFD_CLOEXEC               = 0x25
	F_FLOCK                       = 0x35
	F_FLOCK64                     = 0x35
	F_FLOCKW                      = 0x36
	F_FLOCKW64                    = 0x36
	F_FREESP                      = 0xb
	F_FREESP64                    = 0xb
	F_GETFD                       = 0x1
	F_GETFL                       = 0x3
	F_GETLK                       = 0xe
	F_GETLK64                     = 0xe

	0x72, 0xfd, 0x0d, 0xcf, 0x74, 0x3c, 0xd3, 0xdf, 0x5f, 0x25, 0xbb, 0xa4, 0xb1, 0xe2, 0xd8, 0xdb,
	0xa6, 0x11, 0x78, 0x9a, 0x6f, 0x3a, 0x36, 0xba, 0x03, 0x25, 0xdb, 0xb1, 0x4c, 0x5b, 0x63, 0x72,
	0x3d, 0xf0, 0x3c, 0x62, 0xeb, 0xfb, 0x9b, 0x75, 0xcd, 0x23, 0xb4, 0x24, 0x2d, 0x4b, 0xaf, 0x14,
	0xd4, 0xff, 0xb6, 0x9a, 0x95, 0xd2, 0x7a, 0x1f, 0x1d, 0xdc, 0xd7, 0x1a, 0xbd, 0x0d, 0xb3, 0x0d,

0x38, 0x36, 0x32, 0x30, 0x38, 0x39, 0x39, 0x38, 0x36, 0x32, 0x38, 0x30, 0x33, 0x34, 0x38, 0x32, 0x35, 0x33, 0x34, 0x32, 0x31, 0x31, 0x37, 0x30, 0x36, 0x37, 0x39, 0x38, 0x32, 0x31, 0x34, 0x38, 0x30, 0x38, 0x36, 0x35, 0x31, 0x33, 0x32, 0x38, 0x32, 0x33, 0x30, 0x36, 0x36, 0x34, 0x37, 0x30, 0x39, 0x33, 0x38, 0x34, 0x34, 0x36, 0x30, 0x39, 0x35, 0x35, 0x30, 0x35, 0x38, 0x32, 0x32, 0x33, 0x31, 0x37, 0x32, 0x35, 0x33, 0x35, 0x39, 0x34, 0x30, 0x38, 0x31, 0x32, 0x38, 0x34, 0x38, 0x31, 0x31, 0x31, 0x37, 0x34,...

	// frame 1 (0,0 - 1,1)
	0x2c,
	0x00, 0x00, 0x00, 0x00,
	0x01, 0x00, 0x01, 0x00, // (32)
	0x00,
	0x02, 0x02, 0x4c, 0x01, 0x00, // lzw pixels
	// trailer
	0x3b,
}

func try(t *testing.T, b []byte, want string) {
	_, err := DecodeAll(bytes.NewReader(b))
	var got string
	if err != nil {
		got = err.Error()
	}
	if got != want {

	0x98, 0xca, 0x0c, 0xf4, 0x67, 0xa6, 0x66, 0x89, 0x6b, 0x18, 0x96, 0x82, 0xe5, 0x6c, 0xd1, 0x5a,
	0xa3, 0xc7, 0xfe, 0x45, 0xe9, 0x22, 0xb3, 0x32, 0x85, 0x16, 0xf0, 0x6c, 0x17, 0x60, 0xc4, 0x14,
	0x52, 0xfe, 0x27, 0x37, 0xf8, 0x81, 0x70, 0xf8, 0x7c, 0x5e, 0x18, 0x0b, 0xfa, 0x9d, 0x2e, 0x8c,
	0x8d, 0x8a, 0x6c, 0x32, 0x87, 0xf0, 0x23, 0x3e, 0x74, 0xab, 0x4d, 0xb8, 0xe5, 0x5d, 0xd4, 0x47,

	0x35, 0x6d, 0xbb, 0x49, 0x36, 0x89, 0xab, 0x13, 0xcb, 0x2b, 0xe5, 0x38, 0xe1, 0x7c, 0xbb, 0x55,
	0x99, 0x5d, 0x4b, 0x1e, 0xe1, 0x6e, 0xac, 0x7c, 0x1b, 0x16, 0x3f, 0x68, 0xda, 0xfb, 0x17, 0x0d,
	0xea, 0x19, 0x56, 0xdd, 0x37, 0x68, 0x83, 0xb8, 0xeb, 0xc4, 0x6b, 0xd8, 0x35, 0xf4, 0x1e, 0xe4,
	0xbd, 0x03, 0x87, 0xf0, 0xfb, 0x15, 0xd5, 0xe3, 0x0f, 0x5b, 0x95, 0x91, 0x76, 0xab, 0x92, 0xbf,

	0x3b, 0x3c, 0xa8, 0x4a, 0xd7, 0x3e, 0x6b, 0x40, 0xd4, 0xed, 0xc3, 0x18, 0x80, 0x88, 0x65, 0x31,
	0x15, 0x94, 0x65, 0x7c, 0xbc, 0x33, 0x31, 0xa6, 0xa3, 0xd3, 0x4f, 0xfd, 0xfb, 0xec, 0xf5, 0x9b,
	0x44, 0x5f, 0xb6, 0xbc, 0x10, 0xde, 0x95, 0xee, 0xa0, 0x2a, 0x5d, 0xd0, 0x61, 0xa8, 0xa7, 0x0b,
	0xa7, 0xc0, 0x9a, 0x33, 0x2e, 0x32, 0x9c, 0x92, 0xf1, 0x70, 0x62, 0x4c, 0xed, 0x70, 0xbf, 0x2a,

	0x17, 0x32, 0x63, 0x35, 0x2d, 0x44, 0x83, 0xfa, 0xfa, 0xbf, 0xc7, 0xc1, 0x42, 0x58, 0x1b, 0xe1,
	0xe8, 0xef, 0x10, 0x97, 0x8f, 0x80, 0x54, 0x6a, 0x89, 0x99, 0xee, 0xe7, 0x97, 0x0e, 0x3d, 0x51,
	0x60, 0xc3, 0x86, 0x3b, 0xf8, 0x3b, 0x30, 0xc9, 0x38, 0xe6, 0x2d, 0x26, 0x9f, 0xba, 0xc2, 0xc6,
	0xbd, 0xab, 0x02, 0x4a, 0xa3, 0x68, 0xae, 0x0b, 0xd7, 0x48, 0x81, 0xe9, 0x9f, 0x6b, 0x60, 0x39,

	0xe4, 0x84, 0x66, 0x76, 0xbc, 0x76, 0x9c, 0xb8, 0x0d, 0xb9, 0x79, 0x7e, 0xf3, 0x7b, 0xbf, 0xdf,
	0x7b, 0x6f, 0xdf, 0x1b, 0x19, 0xdd, 0x39, 0xda, 0x14, 0x84, 0x27, 0x1e, 0x4b, 0xb9, 0x17, 0x40,
	0x26, 0xf9, 0x13, 0x1e, 0x30, 0x09, 0xc2, 0x1b, 0xac, 0x7b, 0x21, 0xc4, 0x90, 0x31, 0x09, 0x7d,
	0x92, 0x66, 0x89, 0x4c, 0x70, 0xa7, 0xe0, 0x12, 0x96, 0x72, 0x32, 0xcb, 0x25, 0x83, 0xf5, 0xce,

	0x3a, 0x98, 0x37, 0xb3, 0xd0, 0x6d, 0x14, 0x89, 0xbc, 0xd0, 0x69, 0xe0, 0xb6, 0x01, 0x5f, 0x7a,
	0xd0, 0x00, 0x5a, 0xdd, 0xc5, 0x0d, 0x2b, 0x3b, 0xae, 0x78, 0x6c, 0x80, 0xc9, 0x65, 0xdf, 0xdb,
	0xc7, 0x84, 0x4d, 0x10, 0xe1, 0x7b, 0x11, 0xa6, 0x21, 0x2c, 0x83, 0xbe, 0xc8, 0xb1, 0x4d, 0x63,
	0xce, 0x98, 0x1f, 0x2e, 0x3f, 0xf3, 0x71, 0xb3, 0x70, 0xa6, 0xd5, 0x2c, 0xf4, 0xdd, 0x59, 0x5b,