[opencv] 25/33: fixed uninitialized memory writing/reading in flann
Mattia Rizzolo
mattia at debian.org
Tue Oct 4 17:51:05 UTC 2016
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mattia pushed a commit to annotated tag 2.4.12.2
in repository opencv.
commit a81f0a51237b8772cfc350a9a91fb15a42215781
Author: Ilya Lavrenov <ilya.lavrenov at itseez.com>
Date: Thu Sep 3 13:25:29 2015 +0300
fixed uninitialized memory writing/reading in flann
(cherry picked from commit 3934d61de7d34e9ac8040cf5ced349a51ad2e520)
---
modules/flann/include/opencv2/flann/kmeans_index.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/modules/flann/include/opencv2/flann/kmeans_index.h b/modules/flann/include/opencv2/flann/kmeans_index.h
index 9c0f4e2..e119ceb 100644
--- a/modules/flann/include/opencv2/flann/kmeans_index.h
+++ b/modules/flann/include/opencv2/flann/kmeans_index.h
@@ -384,6 +384,8 @@ public:
}
root_ = pool_.allocate<KMeansNode>();
+ std::memset(root_, 0, sizeof(KMeansNode));
+
computeNodeStatistics(root_, indices_, (int)size_);
computeClustering(root_, indices_, (int)size_, branching_,0);
}
@@ -823,11 +825,11 @@ private:
variance -= distance_(centers[c], ZeroIterator<ElementType>(), veclen_);
node->childs[c] = pool_.allocate<KMeansNode>();
+ std::memset(node->childs[c], 0, sizeof(KMeansNode));
node->childs[c]->radius = radiuses[c];
node->childs[c]->pivot = centers[c];
node->childs[c]->variance = variance;
node->childs[c]->mean_radius = mean_radius;
- node->childs[c]->indices = NULL;
computeClustering(node->childs[c],indices+start, end-start, branching, level+1);
start=end;
}
--
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