Merge remote-tracking branch 'upstream/3.4' into merge-3.4

modules/imgproc/test/test_grabcut.cpp

@@ -89,7 +89,6 @@ void CV_GrabcutTest::run( int /* start_from */)
     Mat exp_bgdModel, exp_fgdModel;
 
     Mat mask;
-    mask = Scalar(0);
     Mat bgdModel, fgdModel;
     grabCut( img, mask, rect, bgdModel, fgdModel, 0, GC_INIT_WITH_RECT );
     bgdModel.copyTo(exp_bgdModel);

modules/imgproc/test/test_moments.cpp

@@ -186,7 +186,14 @@ void CV_MomentsTest::prepare_to_validation( int /*test_case_idx*/ )
     int i, y, x, cols = src.cols;
     double xc = 0., yc = 0.;
 
+#if defined __GNUC__ && __GNUC__ >= 8
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wclass-memaccess"
+#endif
     memset( &m, 0, sizeof(m));
+#if defined __GNUC__ && __GNUC__ >= 8
+#pragma GCC diagnostic pop
+#endif
 
     int coi = 0;
     for( y = 0; y < src.rows; y++ )