Fixed several warnings produced by GCC 7

modules/bioinspired/samples/retinaDemo.cpp

@@ -53,11 +53,13 @@ int main(int argc, char* argv[])
     bool useOCL = parser.has("ocl");
     cv::ocl::setUseOpenCL(useOCL);
     if(useOCL && !cv::ocl::useOpenCL())
+    {
         std::cout << "Failed to enable OpenCL\n";
+    }
 
-	// declare the retina input buffer... that will be fed differently in regard of the input media
-	cv::Mat inputFrame;
-	cv::VideoCapture videoCapture; // in case a video media is used, its manager is declared here
+    // declare the retina input buffer... that will be fed differently in regard of the input media
+    cv::Mat inputFrame;
+    cv::VideoCapture videoCapture; // in case a video media is used, its manager is declared here
 
     if(parser.has("video"))
         videoCapture.open(parser.get<cv::String>("video"));

modules/ccalib/samples/omni_stereo_calibration.cpp

@@ -83,10 +83,10 @@ static bool detecChessboardCorners(const vector<string>& list1, vector<string>&
     }
     if (!img_l.empty())
         imageSize1 = img_l.size();
-	if (!img_r.empty())
-	{
-		imageSize2 = img_r.size();
-	}
+    if (!img_r.empty())
+    {
+        imageSize2 = img_r.size();
+    }
 
     if (image_points_1.size() < 3)
         return false;
@@ -314,4 +314,4 @@ int main(int argc, char** argv)
 
     saveCameraParams(outputFilename, flags, K1, K2, D1, D2, _xi1, _xi2, rvec, tvec, rvecs, tvecs,
 		detec_list_1, detec_list_2, idx, rms, imagePoints1, imagePoints2);
-}
\ No newline at end of file
+}

modules/datasets/src/track_vot.cpp

@@ -91,7 +91,7 @@ namespace cv
         string TRACK_votImpl::numberToString(int number)
         {
             string out;
-            char numberStr[9];
+            char numberStr[20];
             sprintf(numberStr, "%u", number);
             for (unsigned int i = 0; i < 8 - strlen(numberStr); ++i)
             {

modules/sfm/test/test_projection.cpp

@@ -53,9 +53,15 @@ TEST(Sfm_projection, homogeneousToEuclidean)
     EXPECT_EQ((int) X.rows-1,(int) XEuclidean.rows );
 
     for(int y=0;y<X.rows-1;++y)
+    {
         for(int x=0;x<X.cols;++x)
+        {
             if (X(X.rows-1,x)!=0)
+            {
                 EXPECT_LE( std::abs(X(y,x)/X(X.rows-1, x) - XEuclidean(y,x)), 1e-4 );
+            }
+        }
+    }
 }
 
 TEST(Sfm_projection, euclideanToHomogeneous)

modules/text/samples/textdetection.cpp

@@ -119,7 +119,7 @@ void er_show(vector<Mat> &channels, vector<vector<ERStat> > &regions)
                           Scalar(255),0,Scalar(er.level),Scalar(0),flags);
             }
         }
-        char buff[10]; char *buff_ptr = buff;
+        char buff[20]; char *buff_ptr = buff;
         sprintf(buff, "channel %d", c);
         imshow(buff_ptr, dst);
     }

modules/tracking/src/tldDetector.cpp

@@ -440,8 +440,6 @@ namespace cv
 				LabeledPatch labPatch;
 				double curScale = pow(SCALE_STEP, ensScaleIDs[i]);
 				labPatch.rect = Rect2d(ensBuffer[i].x*curScale, ensBuffer[i].y*curScale, initSize.width * curScale, initSize.height * curScale);
-                labPatch.Sc = scValues[i];
-                //printf("max sc %f\n", labPatch.Sc);
 
 				const double srValue = srValues[i];
 				const double scValue = scValues[i];

modules/tracking/src/tldDetector.hpp

@@ -103,7 +103,6 @@ namespace cv
 			{
 				Rect2d rect;
 				bool isObject, shouldBeIntegrated;
-                double Sc;
 			};
 			bool detect(const Mat& img, const Mat& imgBlurred, Rect2d& res, std::vector<LabeledPatch>& patches, Size initSize);
 			bool ocl_detect(const Mat& img, const Mat& imgBlurred, Rect2d& res, std::vector<LabeledPatch>& patches,  Size initSize);

modules/ximgproc/test/test_adaptive_manifold.cpp

@@ -59,8 +59,8 @@ static void checkSimilarity(InputArray res, InputArray ref, double maxNormInf =
     double normInf = cvtest::norm(res, ref, NORM_INF);
     double normL2 = cvtest::norm(res, ref, NORM_L2) / res.total();
 
-    if (maxNormInf >= 0) EXPECT_LE(normInf, maxNormInf);
-    if (maxNormL2 >= 0) EXPECT_LE(normL2, maxNormL2);
+    if (maxNormInf >= 0) { EXPECT_LE(normInf, maxNormInf); }
+    if (maxNormL2 >= 0) { EXPECT_LE(normL2, maxNormL2); }
 }
 
 TEST(AdaptiveManifoldTest, SplatSurfaceAccuracy)