From 51fd7ca5ed062d53472a0cc8715b53c04ce8cbb8 Mon Sep 17 00:00:00 2001
From: Wayne Stambaugh <stambaughw@gmail.com>
Date: Fri, 5 May 2023 12:31:37 -0400
Subject: [PATCH] Verify parent symbol shared pointer is still valid in symbol
 editor.

---
 eeschema/symbol_editor/symbol_edit_frame.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/eeschema/symbol_editor/symbol_edit_frame.cpp b/eeschema/symbol_editor/symbol_edit_frame.cpp
index a6c054b7ce..2ef8afcb71 100644
--- a/eeschema/symbol_editor/symbol_edit_frame.cpp
+++ b/eeschema/symbol_editor/symbol_edit_frame.cpp
@@ -795,7 +795,12 @@ void SYMBOL_EDIT_FRAME::SetCurSymbol( LIB_SYMBOL* aSymbol, bool aUpdateZoom )
     }
     else if( IsSymbolAlias() )
     {
-        wxString parentSymbolName = m_symbol->GetParent().lock()->GetName();
+        std::shared_ptr<LIB_SYMBOL> parent = m_symbol->GetParent().lock();
+
+        // Don't assume the parent symbol shared pointer is still valid.
+        wxCHECK( parent, /* void */ );
+
+        wxString parentSymbolName = parent->GetName();
         int      unit = GetUnit();
         int      convert = GetConvert();
         wxString msg;