From 1c3e1df3ca43414e1f482c88a484d7c76581a7fc Mon Sep 17 00:00:00 2001
From: Jeff Young <jeff@rokeby.ie>
Date: Tue, 23 Nov 2021 12:12:23 +0000
Subject: [PATCH] Not all holes are round.

We currently only need this to work for vias as we're a long way
from being able to support it for pads, so just check the hole
shape.

Fixes https://gitlab.com/kicad/code/kicad/issues/9735
---
 pcbnew/router/router_preview_item.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pcbnew/router/router_preview_item.cpp b/pcbnew/router/router_preview_item.cpp
index 9af66a33f7..6ff990d293 100644
--- a/pcbnew/router/router_preview_item.cpp
+++ b/pcbnew/router/router_preview_item.cpp
@@ -272,7 +272,7 @@ void ROUTER_PREVIEW_ITEM::drawShape( const SHAPE* aShape, KIGFX::GAL* gal ) cons
 
         gal->SetLayerDepth( m_depth );
 
-        if( m_hole )
+        if( m_hole && dynamic_cast<SHAPE_CIRCLE*>( m_hole ) )
         {
             const SHAPE_CIRCLE* h = static_cast<const SHAPE_CIRCLE*>( m_hole );
             int                 halfWidth = m_width / 2;