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Title: bpo-21872: fix lzma library decompresses data incompletely · Pull Request #14048 · python/cpython · GitHub

Open Graph Title: bpo-21872: fix lzma library decompresses data incompletely · Pull Request #14048 · python/cpython

X Title: bpo-21872: fix lzma library decompresses data incompletely · Pull Request #14048 · python/cpython

Description: The Python programming language. Contribute to python/cpython development by creating an account on GitHub.

Open Graph Description: Why this bug happens? lzma_stream structure is used for passing input and output buffers to liblzma library: typedef struct { const uint8_t *next_in; /* Pointer to the next input byte. */ size_t ...

X Description: Why this bug happens? lzma_stream structure is used for passing input and output buffers to liblzma library: typedef struct { const uint8_t *next_in; /* Pointer to the next input byte. */ size_t ...

Opengraph URL: https://github.com/python/cpython/pull/14048

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Commits6 (6)https://github.com/python/cpython/pull/14048/commits
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bpo-21872: fix lzma library decompresses data incompletelyhttps://github.com/python/cpython/pull/14048/commits#top
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1. add test case with wrong behaviorhttps://github.com/python/cpython/pull/14048/commits/1dbbfcfce893b9cdb74758fcfae52da942a0b06e
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https://github.com/python/cpython/tree/1dbbfcfce893b9cdb74758fcfae52da942a0b06e
2. fix bug when max_length == -1https://github.com/python/cpython/pull/14048/commits/ad5cdd16ea4147131a3b9fcfc12cc21d2b059ec3
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https://github.com/python/cpython/tree/ad5cdd16ea4147131a3b9fcfc12cc21d2b059ec3
3. allow b"" as valid input data for decompress_buf()https://github.com/python/cpython/pull/14048/commits/454b278d6a671efe4cf340e81875f9f1a6b40816
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https://github.com/python/cpython/tree/454b278d6a671efe4cf340e81875f9f1a6b40816
4. when max_length >= 0, let needs_input mechanism workshttps://github.com/python/cpython/pull/14048/commits/594d525b5317c8ebf36cc1b43324bc1aa82cbb02
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add more asserts to test casehttps://github.com/python/cpython/pull/14048/commits/05951a674e32093d2dac43cdb6c7ce47072a0715
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