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Potential Vulnerability in Cloned Code #9

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Potential Vulnerability in Cloned Code #9

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6 changes: 5 additions & 1 deletion fluids3.0/common/app_util.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2588,11 +2588,15 @@ unsigned lodepng_huffman_code_lengths(unsigned* lengths, const unsigned* frequen
static unsigned HuffmanTree_makeFromFrequencies(HuffmanTree* tree, const unsigned* frequencies,
size_t mincodes, size_t numcodes, unsigned maxbitlen)
{
unsigned* lengths;
unsigned error = 0;
while(!frequencies[numcodes - 1] && numcodes > mincodes) numcodes--; /*trim zeroes*/
tree->maxbitlen = maxbitlen;
tree->numcodes = (unsigned)numcodes; /*number of symbols*/
tree->lengths = (unsigned*)myrealloc(tree->lengths, numcodes * sizeof(unsigned));
lengths = (unsigned*)realloc(tree->lengths, numcodes * sizeof(unsigned));
if (!lengths)
free(tree->lengths);
tree->lengths = lengths;
if(!tree->lengths) return 83; /*alloc fail*/
/*initialize all lengths to 0*/
memset(tree->lengths, 0, numcodes * sizeof(unsigned));
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