Coverity memory leaks and other fixes

src/analysis/vector/qgstransectsample.cpp

@@ -514,7 +514,7 @@ QgsGeometry* QgsTransectSample::closestMultilineElement( const QgsPoint& pt, Qgs
   double minDist = DBL_MAX;
   double currentDist = 0;
   QgsGeometry* currentLine = 0;
-  QgsGeometry* closestLine = 0;
+  QScopedPointer<QgsGeometry> closestLine;
   QgsGeometry* pointGeom = QgsGeometry::fromPoint( pt );
 
   QgsMultiPolyline multiPolyline = multiLine->asMultiPolyline();
@@ -526,7 +526,7 @@ QgsGeometry* QgsTransectSample::closestMultilineElement( const QgsPoint& pt, Qgs
     if ( currentDist < minDist )
     {
       minDist = currentDist;
-      closestLine = currentLine;
+      closestLine.reset( currentLine );
     }
     else
     {
@@ -535,7 +535,7 @@ QgsGeometry* QgsTransectSample::closestMultilineElement( const QgsPoint& pt, Qgs
   }
 
   delete pointGeom;
-  return closestLine;
+  return closestLine.take();
 }
 
 QgsGeometry* QgsTransectSample::clipBufferLine( const QgsGeometry* stratumGeom, QgsGeometry* clippedBaseline, double tolerance )

src/app/qgisapp.cpp

@@ -920,6 +920,7 @@ QgisApp::QgisApp()
     , mBrowserWidget( 0 )
     , mBrowserWidget2( 0 )
     , mAdvancedDigitizingDockWidget( 0 )
+    , mStatisticalSummaryDockWidget( 0 )
     , mSnappingDialog( 0 )
     , mPluginManager( 0 )
     , mComposerManager( 0 )
@@ -930,6 +931,7 @@ QgisApp::QgisApp()
     , mLogViewer( 0 )
     , mTrustedMacros( false )
     , mMacrosWarn( 0 )
+    , mUserInputDockWidget( 0 )
     , mVectorLayerTools( 0 )
     , mBtnFilterLegend( 0 )
     , mSnappingUtils( 0 )
@@ -6523,24 +6525,24 @@ void QgisApp::copyStyle( QgsMapLayer * sourceLayer )
     */
     if ( selectionLayer->type() == 0 )
     {
-        //Getting the selectionLayer geometry
-        QgsVectorLayer *SelectionGeometry = static_cast<QgsVectorLayer*>(selectionLayer);
-        QString geoType = QString::number(SelectionGeometry->geometryType());
+      //Getting the selectionLayer geometry
+      QgsVectorLayer *SelectionGeometry = static_cast<QgsVectorLayer*>( selectionLayer );
+      QString geoType = QString::number( SelectionGeometry->geometryType() );
 
-        //Adding geometryinformation
-        QDomElement layerGeometryType = doc.createElement("layerGeometryType");
-        QDomText type = doc.createTextNode(geoType);
+      //Adding geometryinformation
+      QDomElement layerGeometryType = doc.createElement( "layerGeometryType" );
+      QDomText type = doc.createTextNode( geoType );
 
-        layerGeometryType.appendChild(type);
-        rootNode.appendChild(layerGeometryType);
+      layerGeometryType.appendChild( type );
+      rootNode.appendChild( layerGeometryType );
     }
 
     QString errorMsg;
     if ( !selectionLayer->writeSymbology( rootNode, doc, errorMsg ) )
     {
-        messageBar()->pushMessage( errorMsg,
-                                   tr( "Cannot copy style: %1" ),
-                                   QgsMessageBar::CRITICAL, messageTimeout() );
+      messageBar()->pushMessage( errorMsg,
+                                 tr( "Cannot copy style: %1" ),
+                                 QgsMessageBar::CRITICAL, messageTimeout() );
       return;
     }
     // Copies data in text form as well, so the XML can be pasted into a text editor
@@ -6556,7 +6558,7 @@ void QgisApp::copyStyle( QgsMapLayer * sourceLayer )
 
 
 void QgisApp::pasteStyle( QgsMapLayer * destinationLayer )
-{    
+{
   QgsMapLayer *selectionLayer = destinationLayer ? destinationLayer : activeLayer();
   if ( selectionLayer )
   {
@@ -6568,34 +6570,34 @@ void QgisApp::pasteStyle( QgsMapLayer * destinationLayer )
       if ( !doc.setContent( clipboard()->data( QGSCLIPBOARD_STYLE_MIME ), false, &errorMsg, &errorLine, &errorColumn ) )
       {
 
-          messageBar()->pushMessage( errorMsg,
-                                     tr( "Cannot parse style: %1:%2:%3" ),
-                                     QgsMessageBar::CRITICAL, messageTimeout() );
-          return;
+        messageBar()->pushMessage( errorMsg,
+                                   tr( "Cannot parse style: %1:%2:%3" ),
+                                   QgsMessageBar::CRITICAL, messageTimeout() );
+        return;
       }
 
       QDomElement rootNode = doc.firstChildElement( "qgis" );
 
       //Test for matching geometry type on vector layers when pasting
-      if (selectionLayer->type() == QgsMapLayer::VectorLayer)
+      if ( selectionLayer->type() == QgsMapLayer::VectorLayer )
       {
-          QgsVectorLayer *selectionVectorLayer = static_cast<QgsVectorLayer*>(selectionLayer);
-          int pasteLayerGeometryType = doc.elementsByTagName("layerGeometryType").item(0).toElement().text().toInt();
-          if ( selectionVectorLayer->geometryType() != pasteLayerGeometryType )
-          {
-              messageBar()->pushMessage( tr( "Cannot paste style to layer with a different geometry type" ),
-                                         tr( "Your copied style does not match the layer you are pasting to" ),
-                                         QgsMessageBar::INFO, messageTimeout() );
-              return;
-          }
+        QgsVectorLayer *selectionVectorLayer = static_cast<QgsVectorLayer*>( selectionLayer );
+        int pasteLayerGeometryType = doc.elementsByTagName( "layerGeometryType" ).item( 0 ).toElement().text().toInt();
+        if ( selectionVectorLayer->geometryType() != pasteLayerGeometryType )
+        {
+          messageBar()->pushMessage( tr( "Cannot paste style to layer with a different geometry type" ),
+                                     tr( "Your copied style does not match the layer you are pasting to" ),
+                                     QgsMessageBar::INFO, messageTimeout() );
+          return;
+        }
       }
 
       if ( !selectionLayer->readSymbology( rootNode, errorMsg ) )
       {
-          messageBar()->pushMessage( errorMsg,
-                                     tr( "Cannot read style: %1" ),
-                                     QgsMessageBar::CRITICAL, messageTimeout() );
-          return;
+        messageBar()->pushMessage( errorMsg,
+                                   tr( "Cannot read style: %1" ),
+                                   QgsMessageBar::CRITICAL, messageTimeout() );
+        return;
       }
 
       mLayerTreeView->refreshLayerSymbology( selectionLayer->id() );

src/app/qgsmaptooldeletepart.cpp

@@ -183,6 +183,7 @@ QgsGeometry* QgsMapToolDeletePart::partUnderPoint( QPoint point, QgsFeatureId& f
           delete geomPart;
           return partGeo;
         }
+        delete partGeo;
       }
       break;
     }

src/app/qgsmaptooldeletering.cpp

@@ -88,6 +88,9 @@ void QgsMapToolDeleteRing::canvasPressEvent( QMouseEvent *e )
     mRubberBand->setToGeometry( ringGeom, vlayer );
     mRubberBand->show();
   }
+
+  delete ringGeom;
+  ringGeom = 0;
 }
 
 void QgsMapToolDeleteRing::canvasReleaseEvent( QMouseEvent *e )
@@ -124,10 +127,10 @@ QgsGeometry* QgsMapToolDeleteRing::ringUnderPoint( QgsPoint p, QgsFeatureId& fid
   QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterRect( toLayerCoordinates( vlayer, mCanvas->extent() ) ) );
   QgsFeature f;
   const QgsGeometry* g;
-  QgsGeometry* ringGeom = 0;
+  QScopedPointer<QgsGeometry> ringGeom;
   QgsMultiPolygon pol;
   QgsPolygon tempPol;
-  QgsGeometry* tempGeom;
+  QScopedPointer<QgsGeometry> tempGeom;
   double area = std::numeric_limits<double>::max();
   while ( fit.nextFeature( f ) )
   {
@@ -150,20 +153,20 @@ QgsGeometry* QgsMapToolDeleteRing::ringUnderPoint( QgsPoint p, QgsFeatureId& fid
         for ( int j = 1; j < pol[i].size();++j )
         {
           tempPol = QgsPolygon() << pol[i][j];
-          tempGeom = QgsGeometry::fromPolygon( tempPol );
+          tempGeom.reset( QgsGeometry::fromPolygon( tempPol ) );
           if ( tempGeom->area() < area && tempGeom->contains( &p ) )
           {
             fid = f.id();
             partNum = i;
             ringNum = j;
-            ringGeom = tempGeom;
             area = tempGeom->area();
+            ringGeom.reset( tempGeom.take() );
           }
         }
       }
     }
   }
-  return ringGeom;
+  return ringGeom.take();
 }
 
 

src/core/composer/qgscomposermapgrid.cpp

@@ -589,6 +589,8 @@ void QgsComposerMapGrid::calculateCRSTransformLines()
       {
         //look for intersections between lines
         QgsGeometry* intersects = ( *yLineIt )->intersection(( *xLineIt ) );
+        if ( !intersects )
+          continue;
 
         //go through all intersections and draw grid markers/crosses
         int i = 0;
@@ -599,6 +601,7 @@ void QgsComposerMapGrid::calculateCRSTransformLines()
           i = i + 1;
           vertex = intersects->vertexAt( i );
         }
+        delete intersects;
       }
     }
     //clean up

src/core/geometry/qgscompoundcurvev2.cpp

@@ -413,7 +413,7 @@ void QgsCompoundCurveV2::addVertex( const QgsPointV2& pt )
   }
   else //create new QgsLineStringV2* with point in it
   {
-    line = dynamic_cast<QgsLineStringV2*>( lastCurve );
+    line = static_cast<QgsLineStringV2*>( lastCurve );
   }
   line->addVertex( pt );
 }

src/core/geometry/qgscurvepolygonv2.cpp

@@ -121,6 +121,10 @@ bool QgsCurvePolygonV2::fromWkb( const unsigned char* wkb )
     {
       currentCurve = new QgsCompoundCurveV2();
     }
+    else
+    {
+      return false;
+    }
     currentCurve->fromWkb( wkbPtr );
     currentCurveSize = currentCurve->wkbSize();
     if ( i == 0 )