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Fixed issue #52 (faulty binary generation with Visual Studio 2013 & 2015 in release mode (compiler bug)), reported and fixed by Christophe Chevalier (@KrzysFR)

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This commit is contained in:
Yann Collet 2015-10-28 01:35:05 +01:00
parent 3e8fbabfa8
commit 64e491e688
1 changed files with 22 additions and 11 deletions
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29
lib/huff0.c
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@ -1023,17 +1023,22 @@ size_t HUF_readDTableX4 (U32* DTable, const void* src, size_t srcSize)
U32 nextRankVal = 0; U32 nextRankVal = 0;
U32 w, consumed; U32 w, consumed;
const int rescale = (memLog-tableLog) - 1; /* tableLog <= memLog */ const int rescale = (memLog-tableLog) - 1; /* tableLog <= memLog */
U32* rankVal0 = rankVal[0];
for (w=1; w<=maxW; w++) for (w=1; w<=maxW; w++)
{ {
U32 current = nextRankVal; U32 current = nextRankVal;
nextRankVal += rankStats[w] << (w+rescale); nextRankVal += rankStats[w] << (w+rescale);
rankVal[0][w] = current; rankVal0[w] = current;
}
for (consumed = minBits; consumed <= memLog - minBits; consumed++)
{
U32* rankValPtr = rankVal[consumed];
for (w = 1; w <= maxW; w++)
{
rankValPtr[w] = rankVal0[w] >> consumed;
}
} }
for (consumed=minBits; consumed <= memLog-minBits; consumed++)
for (w=1; w<=maxW; w++)
rankVal[consumed][w] = rankVal[0][w] >> consumed;
} }
HUF_fillDTableX4(dt, memLog, HUF_fillDTableX4(dt, memLog,
sortedSymbol, sizeOfSort, sortedSymbol, sizeOfSort,
@ -1390,15 +1395,21 @@ size_t HUF_readDTableX6 (U32* DTable, const void* src, size_t srcSize)
U32 nextRankVal = 0; U32 nextRankVal = 0;
U32 w, consumed; U32 w, consumed;
const int rescale = (memLog-tableLog) - 1; /* tableLog <= memLog */ const int rescale = (memLog-tableLog) - 1; /* tableLog <= memLog */
U32* rankVal0 = rankVal[0];
for (w=1; w<=maxW; w++) for (w=1; w<=maxW; w++)
{ {
U32 current = nextRankVal; U32 current = nextRankVal;
nextRankVal += rankStats[w] << (w+rescale); nextRankVal += rankStats[w] << (w+rescale);
rankVal[0][w] = current; rankVal0[w] = current;
}
for (consumed = minBits; consumed <= memLog - minBits; consumed++)
{
U32* rankValPtr = rankVal[consumed];
for (w = 1; w <= maxW; w++)
{
rankValPtr[w] = rankVal0[w] >> consumed;
}
} }
for (consumed=minBits; consumed <= memLog-minBits; consumed++)
for (w=1; w<=maxW; w++)
rankVal[consumed][w] = rankVal[0][w] >> consumed;
} }