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Fixing invalid opencv_test_ml calls

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This commit is contained in:
Evgeny Agafonchikov 2015-03-20 10:10:32 +03:00
parent d2da7dc3e5
commit 91bd7df8c1
1 changed files with 8 additions and 1 deletions
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9
modules/ml/src/tree.cpp
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@ -286,7 +286,14 @@ int DTreesImpl::addTree(const vector<int>& sidx )
int ssize = getSubsetSize(split.varIdx);
split.subsetOfs = (int)subsets.size();
subsets.resize(split.subsetOfs + ssize);
memcpy(&subsets[split.subsetOfs], &w->wsubsets[wsplit.subsetOfs], ssize*sizeof(int));
// This check verifies that subsets index is in the correct range
// as in case ssize == 0 no real resize performed.
// Thus memory kept safe.
// Also this skips useless memcpy call when size parameter is zero
if(ssize > 0)
{
memcpy(&subsets[split.subsetOfs], &w->wsubsets[wsplit.subsetOfs], ssize*sizeof(int));
}
}
node.split = (int)splits.size();
splits.push_back(split);