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Fix & fuzz ZSTD_generateSequences

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This function was seriously flawed:
* It didn't do output bounds checks
* It produced invalid sequences when an uncompressed or RLE block was emitted
* It produced invalid sequences when the block splitter was enabled
* It produced invalid sequences when ZSTD_c_targetCBlockSize was enabled

I've attempted to fix these issues, but this function is just a bad idea,
so I've marked it as deprecated and unsafe. We should replace it with
`ZSTD_extractSequences()` which operates on a compressed frame.
This commit is contained in:
Nick Terrell
2024-03-19 12:37:55 -07:00
parent 741b87bbe1
commit 731f4b70fc
8 changed files with 231 additions and 56 deletions
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tests/fuzz/fuzz.py
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@ -66,6 +66,7 @@ TARGET_INFO = {
'huf_round_trip': TargetInfo(InputType.RAW_DATA),
'huf_decompress': TargetInfo(InputType.RAW_DATA),
'decompress_cross_format': TargetInfo(InputType.RAW_DATA),
'generate_sequences': TargetInfo(InputType.RAW_DATA),
}
TARGETS = list(TARGET_INFO.keys())
ALL_TARGETS = TARGETS + ['all']