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Eeschema: connection_graph.cpp: clear old pointers to avoid using outdated or deleted data. 

m_connected_bus_item and m_connected_bus_items pointers were not cleared when
rebuilding connection data.
So in some cases these pointers were not updated, and created a crash
once the old data was no longer available (deleted)
This commit is contained in:
jean-pierre charras 2019-12-23 14:55:47 +01:00
parent 07d990f4f3
commit 034b87dec0
1 changed files with 12 additions and 2 deletions
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14
eeschema/connection_graph.cpp
View File

@ -41,7 +41,6 @@
#include <connection_graph.h>
bool CONNECTION_SUBGRAPH::ResolveDrivers( bool aCreateMarkers )
{
int highest_priority = -1;
@ -503,11 +502,19 @@ void CONNECTION_GRAPH::updateItemConnectivity( SCH_SHEET_PATH aSheet,
case SCH_BUS_BUS_ENTRY_T:
conn->SetType( CONNECTION_BUS );
// clean previous (old) links:
static_cast<SCH_BUS_BUS_ENTRY*>( item )->m_connected_bus_items[0] = nullptr;
static_cast<SCH_BUS_BUS_ENTRY*>( item )->m_connected_bus_items[1] = nullptr;
break;
case SCH_PIN_T:
conn->SetType( CONNECTION_NET );
break;
case SCH_BUS_WIRE_ENTRY_T:
conn->SetType( CONNECTION_NET );
// clean previous (old) link:
static_cast<SCH_BUS_WIRE_ENTRY*>( item )->m_connected_bus_item = nullptr;
break;
default:
@ -2016,9 +2023,12 @@ bool CONNECTION_GRAPH::ercCheckBusToBusEntryConflicts( const CONNECTION_SUBGRAPH
{
bus_wire = bus_entry->m_connected_bus_item;
wxASSERT( bus_wire->Type() == SCH_LINE_T );
// In some cases, the connection list (SCH_CONNECTION*) can be null.
// Skip null connections.
if( bus_entry->Connection( sheet ) && bus_wire->Connection( sheet ) )
if( bus_entry->Connection( sheet ) && bus_wire->Type() == SCH_LINE_T
&& bus_wire->Connection( sheet ) )
{
conflict = true;