From bac7b3e77a4d2816a2696e5c885e74ad63c21ad2 Mon Sep 17 00:00:00 2001
From: Seth Hillbrand <seth@kipro-pcb.com>
Date: Mon, 22 Feb 2021 10:12:54 -0800
Subject: [PATCH] Protect against dynamic_cast

Items might not be FOOTPRINT, in which case the dynamic_cast will return
nullptr.  Check for this in the subfunction
---
 pcbnew/pcb_expr_evaluator.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pcbnew/pcb_expr_evaluator.cpp b/pcbnew/pcb_expr_evaluator.cpp
index f442210541..b15e89c0e4 100644
--- a/pcbnew/pcb_expr_evaluator.cpp
+++ b/pcbnew/pcb_expr_evaluator.cpp
@@ -169,6 +169,9 @@ static void insideCourtyard( LIBEVAL::CONTEXT* aCtx, void* self )
             {
                 SHAPE_POLY_SET footprintCourtyard;
 
+                if( !footprint )
+                    return false;
+
                 if( footprint->IsFlipped() )
                     footprintCourtyard = footprint->GetPolyCourtyardBack();
                 else