//Array used to store info and labeled pixel by each thread.
//Different threads affect different memory location of chunksSizeAndLabels
- int *chunksSizeAndLabels = (int *)cv::fastMalloc(h * sizeof(int));
+ const int chunksSizeAndLabelsSize = h + 1;
+ int *chunksSizeAndLabels = (int *)cv::fastMalloc(chunksSizeAndLabelsSize * sizeof(int));
//Tree of labels
LabelT *P = (LabelT *)cv::fastMalloc(Plength * sizeof(LabelT));
LabelT nLabels = 1;
for (int i = 0; i < h; i = chunksSizeAndLabels[i]){
+ CV_Assert(i + 1 < chunksSizeAndLabelsSize);
flattenL(P, LabelT((i + 1) / 2) * LabelT((w + 1) / 2) + 1, chunksSizeAndLabels[i + 1], nLabels);
}
TEST(Imgproc_ConnectedComponents, regression) { CV_ConnectedComponentsTest test; test.safe_run(); }
+TEST(Imgproc_ConnectedComponents, grana_buffer_overflow)
+{
+ cv::Mat darkMask;
+ darkMask.create(31, 87, CV_8U);
+ darkMask = 0;
+
+ cv::Mat labels;
+ cv::Mat stats;
+ cv::Mat centroids;
+
+ int nbComponents = cv::connectedComponentsWithStats(darkMask, labels, stats, centroids, 8, CV_32S, cv::CCL_GRANA);
+ EXPECT_EQ(1, nbComponents);
+}
+
}} // namespace