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[3.15] gh-160535: Keep the ZstdDict alive until the zstd context is freed (GH-160536) - #160635
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…eed (pythonGH-160536) The garbage collector could release a ZstdCompressor's dictionary, or the digested dictionaries cached by the ZstdDict, while worker threads of the compression context were still reading them. They are now only released on deallocation, after the context has been freed. ANT-2026-CT3P1CSJ + Visit the type in the compressor and decompressor traverse; move NEWS to Library (cherry picked from commit b949033ae8b22ff77e798a08f4ecc6eaf4cf0d8a) Co-authored-by: Gregory P. Smith <[email protected]>
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The garbage collector could release a ZstdCompressor's dictionary, or
the digested dictionaries cached by the ZstdDict, while worker threads
of the compression context were still reading them. They are now only
released on deallocation, after the context has been freed.
ANT-2026-CT3P1CSJ
(cherry picked from commit b949033)
Co-authored-by: Gregory P. Smith [email protected]
ZstdCompressortogether with itsZstdDict#160535