Pcbnew: fix segfault after deleting a pad from a footprint then performing a DRC action such as a via drag.

pcbnew/block_module_editor.cpp

@@ -537,29 +537,27 @@ void MoveMarkedItems( MODULE* module, wxPoint offset )
  */
 void DeleteMarkedItems( MODULE* module )
 {
-    BOARD_ITEM* item;
     BOARD_ITEM* next_item;
-    D_PAD*      pad;
     D_PAD*      next_pad;
+    BOARD*      board = module->GetBoard();
 
     if( module == NULL )
         return;
 
-    pad = module->Pads();
-
-    for( ; pad != NULL; pad = next_pad )
+    for( D_PAD* pad = module->Pads();  pad;  pad = next_pad )
     {
         next_pad = pad->Next();
 
         if( !pad->IsSelected() )
             continue;
 
+        if( board )
+            board->PadDelete( pad );
+        else
             pad->DeleteStructure();
     }
 
-    item = module->GraphicalItems();
-
-    for( ; item != NULL; item = next_item )
+    for( BOARD_ITEM* item = module->GraphicalItems();  item;  item = next_item )
     {
         next_item = item->Next();
 

pcbnew/class_board.cpp

@@ -1666,6 +1666,14 @@ void BOARD::GetSortedPadListByXthenYCoord( std::vector<D_PAD*>& aVector, int aNe
 }
 
 
+void BOARD::PadDelete( D_PAD* aPad )
+{
+    m_NetInfo.DeletePad( aPad );
+
+    aPad->DeleteStructure();
+}
+
+
 TRACK* BOARD::GetTrack( TRACK* aTrace, const wxPoint& aPosition,
         LSET aLayerMask ) const
 {

pcbnew/class_board.h

@@ -1274,6 +1274,14 @@ public:
      */
     D_PAD* GetPad( std::vector<D_PAD*>& aPadList, const wxPoint& aPosition, LSET aLayerMask );
 
+    /**
+     * Function PadDelete
+     * deletes a given bad from the BOARD by removing it from its module and
+     * from the m_NetInfo.  Makes no UI calls.
+     * @param aPad is the pad to delete.
+     */
+    void PadDelete( D_PAD* aPad );
+
     /**
      * Function GetSortedPadListByXthenYCoord
      * first empties then fills the vector with all pads and sorts them by

pcbnew/class_netinfo.h

@@ -304,9 +304,8 @@ public:
 
     /**
      * Function GetPads
-     * returns a list of all the pads.  The returned list is not
-     * sorted and contains pointers to PADS, but those pointers do not convey
-     * ownership of the respective PADs.
+     * returns a list of all the pads (so long as buildPadsFullList() has
+     * been recently called).  Returned list contains non-owning pointers.
      * @return std::vector<D_PAD*>& - a full list of pads
     std::vector<D_PAD*>& GetPads()
     {
@@ -326,6 +325,22 @@ public:
             return NULL;
     }
 
+    bool DeletePad( D_PAD* aPad )
+    {
+        std::vector<D_PAD*>::iterator it  = m_PadsFullList.begin();
+        std::vector<D_PAD*>::iterator end = m_PadsFullList.end();
+
+        for( ; it != end;  ++it )
+        {
+            if( *it == aPad )
+            {
+                m_PadsFullList.erase( it );
+                return true;
+            }
+        }
+        return false;
+    }
+
     ///> Constant that holds the "unconnected net" number (typically 0)
     ///> all items "connected" to this net are actually not connected items
     static const int UNCONNECTED;
@@ -409,7 +424,7 @@ public:
 
 private:
     /**
-     * Function DeleteData
+     * Function clear
      * deletes the list of nets (and free memory)
      */
     void clear();

pcbnew/class_netinfolist.cpp

@@ -144,6 +144,7 @@ void NETINFO_LIST::buildListOfNets()
 
         // Add pad to the appropriate list of pads
         NETINFO_ITEM* net = pad->GetNet();
+
         // it should not be possible for BOARD_CONNECTED_ITEM to return NULL as a result of GetNet()
         wxASSERT( net );
 
@@ -162,6 +163,7 @@ void NETINFO_LIST::buildListOfNets()
     m_Parent->SetAreasNetCodesFromNetNames();
 }
 
+
 #if defined(DEBUG)
 void NETINFO_LIST::Show() const
 {
@@ -176,6 +178,7 @@ void NETINFO_LIST::Show() const
 }
 #endif
 
+
 void NETINFO_LIST::buildPadsFullList()
 {
     /*

pcbnew/drc_clearance_test_functions.cpp

@@ -272,7 +272,9 @@ bool DRC::doTrackDrc( TRACK* aRefSeg, TRACK* aStart, bool testPads )
     // Compute the min distance to pads
     if( testPads )
     {
-        for( unsigned ii = 0;  ii<m_pcb->GetPadCount();  ++ii )
+        unsigned pad_count = m_pcb->GetPadCount();
+
+        for( unsigned ii = 0;  ii<pad_count;  ++ii )
         {
             D_PAD* pad = m_pcb->GetPad( ii );
 

pcbnew/pad_edition_functions.cpp

@@ -220,7 +220,9 @@ void PCB_BASE_FRAME::DeletePad( D_PAD* aPad, bool aQuery )
     EDA_RECT bbox = module->GetBoundingBox();
 
     m_Pcb->m_Status_Pcb = 0;
-    aPad->DeleteStructure();
+
+    GetBoard()->PadDelete( aPad );
+
     // Update the bounding box
     module->CalculateBoundingBox();