Pillow/Tests/check_jp2_overflow.py

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#!/usr/bin/env python3
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# Reproductions/tests for OOB read errors in FliDecode.c
# When run in python, all of these images should fail for
# one reason or another, either as a buffer overrun,
# unrecognized datastream, or truncated image file.
# There shouldn't be any segfaults.
#
# if run like
# `valgrind --tool=memcheck python check_jp2_overflow.py 2>&1 | grep Decode.c`
# the output should be empty. There may be python issues
# in the valgrind especially if run in a debug python
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# version.
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from PIL import Image
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repro = ("00r0_gray_l.jp2", "00r1_graya_la.jp2")
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for path in repro:
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with Image.open(path) as im:
try:
im.load()
except Exception as msg:
print(msg)