Worked around an apparent GCC bug in moments.

modules/imgproc/src/moments.cpp

@@ -197,6 +197,10 @@ static void icvContourMoments( CvSeq* contour, CvMoments* moments )
 \****************************************************************************************/
 
 template<typename T, typename WT, typename MT>
+#if defined __GNUC__ && __GNUC__ == 4 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 9
+// Workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60196
+__attribute__((optimize("no-tree-vectorize")))
+#endif
 static void momentsInTile( const cv::Mat& img, double* moments )
 {
     cv::Size size = img.size();