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Question about ZSTD protocole#4037

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shulib opened this issue Apr 30, 2024 · 1 comment
Open

Question about ZSTD protocole #4037

shulib opened this issue Apr 30, 2024 · 1 comment

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@shulib
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shulib commented Apr 30, 2024

Hi,
My question about ZSTD protocol is:
Can it possible on literal part FSE table, which contains 2 probabilities and only one weight (even but without odd) extracted from table?
the file I sent (after mv it to ForCheck.zst ) decompressed on tool version zstd-1.5.5 but not in former version zstd-1.5.2
ForCheck.zst.txt
thanks,
Shuli,
@shulib
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shulib commented May 8, 2024

Last block:
In addition to this - I took table of two values:
Symbol = 0x0 , Probability = 0x1b
Symbol = 0x1 , Probability = 0x5
acclog is 5
zst.bin.file.zst.case.txt
0xc0 0x0f - this is the table bytes
tree is :0x03 0xc0 0x0f 0x24 - so there is 1 weight parsed only (5 first bit of even part) -
so I should get only literals 0x00 and 0x01 - not 0x02.
why I get parsing value 2 in tool?

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@shulib