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Disallow tableLog == srcLog

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This commit is contained in:
Nick Terrell 2018-08-02 11:12:17 -07:00
parent b9faaa1dc3
commit dc5a67cb7b
1 changed files with 1 additions and 1 deletions
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lib/compress/fse_compress.c
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@ -331,7 +331,7 @@ void FSE_freeCTable (FSE_CTable* ct) { free(ct); }
/* provides the minimum logSize to safely represent a distribution */ /* provides the minimum logSize to safely represent a distribution */
static unsigned FSE_minTableLog(size_t srcSize, unsigned maxSymbolValue) static unsigned FSE_minTableLog(size_t srcSize, unsigned maxSymbolValue)
{ {
U32 minBitsSrc = BIT_highbit32((U32)(srcSize - 1)) + 1; U32 minBitsSrc = BIT_highbit32((U32)(srcSize)) + 1;
U32 minBitsSymbols = BIT_highbit32(maxSymbolValue) + 2; U32 minBitsSymbols = BIT_highbit32(maxSymbolValue) + 2;
U32 minBits = minBitsSrc < minBitsSymbols ? minBitsSrc : minBitsSymbols; U32 minBits = minBitsSrc < minBitsSymbols ? minBitsSrc : minBitsSymbols;
assert(srcSize > 1); /* Not supported, RLE should be used instead */ assert(srcSize > 1); /* Not supported, RLE should be used instead */