Pillow/Tests/check_j2k_dos.py

# Tests potential DOS of Jpeg2kImagePlugin with 0 length block.
# Run from anywhere that PIL is importable.

from io import BytesIO

from PIL import Image
from PIL._util import py3

if py3:
    Image.open(
        BytesIO(
            bytes(
                "\x00\x00\x00\x0cjP\x20\x20\x0d\x0a\x87\x0a\x00\x00\x00\x00hang",
                "latin-1",
            )
        )
    )

else:
    Image.open(
        BytesIO(bytes("\x00\x00\x00\x0cjP\x20\x20\x0d\x0a\x87\x0a\x00\x00\x00\x00hang"))
    )