Add missing GetEffectiveShape().

pcbnew/pcb_marker.cpp

@@ -31,6 +31,7 @@
 #include <layers_id_colors_and_visibility.h>
 #include <settings/color_settings.h>
 #include <settings/settings_manager.h>
+#include <geometry/shape_null.h>
 #include <widgets/ui_common.h>
 #include <pgm_base.h>
 #include <drc/drc_item.h>
@@ -128,6 +129,14 @@ void PCB_MARKER::Flip( const wxPoint& aCentre, bool aFlipLeftRight )
 }
 
 
+std::shared_ptr<SHAPE> PCB_MARKER::GetEffectiveShape( PCB_LAYER_ID aLayer ) const
+{
+    // Markers do not participate in the board geometry space, and therefore have no
+    // effectiven shape.
+    return std::make_shared<SHAPE_NULL>();
+}
+
+
 wxString PCB_MARKER::GetSelectMenuText( EDA_UNITS aUnits ) const
 {
     // m_rcItem->GetErrorMessage() could be used instead, but is probably too long

pcbnew/pcb_marker.h

@@ -79,6 +79,8 @@ public:
 
     GAL_LAYER_ID GetColorLayer() const;
 
+    std::shared_ptr<SHAPE> GetEffectiveShape( PCB_LAYER_ID aLayer ) const override;
+
     void GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList ) override;
 
     bool Matches( wxFindReplaceData& aSearchData, void* aAuxData ) override