08981d2638
Allow compression to use dictionaries with missing symbols in their entropy tables. We set the FSE repeat mode to check when there are missing symbols, and set the FSE repeat mode to valid when all symbols are present. Note that when not all symbols are present, the heuristics which favor dictionary tables for lower compression levels won't activate. Tested by manually creating a dictionary with missing symbols of every type, and validing that the compressor rejects it before this change, and accepts it after this change. Also, I ran the `dictionary_loader` fuzzer for >1 hour of CPU time without running into cases where compression succeeds, but decompression fails. Fixes #2174.
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1.2 KiB
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1.2 KiB
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