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-rw-r--r--gui/designwidget.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/gui/designwidget.cc b/gui/designwidget.cc
index d28b843b..f7ae82f5 100644
--- a/gui/designwidget.cc
+++ b/gui/designwidget.cc
@@ -230,6 +230,9 @@ void DesignWidget::addToHistory(QTreeWidgetItem *item)
void DesignWidget::newContext(Context *ctx)
{
treeWidget->clear();
+ // reset pointers since they are not valid after clear
+ nets_root = nullptr;
+ cells_root = nullptr;
history_ignore = false;
history_index = -1;
history.clear();