From 2f35d97b27945a7e92f06b3064f0ea26c8877298 Mon Sep 17 00:00:00 2001
From: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
Date: Thu, 22 Jun 2023 23:52:11 +0200
Subject: [PATCH] router: when no collision search context is provided, assume
 differentNetsOnly is true

(cherry picked from commit a0a68d198cfb54a42e92cb09ce77cd6967470ea5)
---
 pcbnew/router/pns_item.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pcbnew/router/pns_item.cpp b/pcbnew/router/pns_item.cpp
index dc225436ec..cc661ecefe 100644
--- a/pcbnew/router/pns_item.cpp
+++ b/pcbnew/router/pns_item.cpp
@@ -152,9 +152,14 @@ bool ITEM::collideSimple( const ITEM* aHead, const NODE* aNode,
     // fixme: this f***ing singleton must go...
     ROUTER*       router = ROUTER::GetInstance();
     ROUTER_IFACE* iface = router ? router->GetInterface() : nullptr;
-    bool          differentNetsOnly = aCtx && aCtx->options.m_differentNetsOnly;
+    bool          differentNetsOnly = true;
     int           clearance;
 
+    if( aCtx )
+    {
+        differentNetsOnly = aCtx->options.m_differentNetsOnly;
+    }
+
     // Hole-to-hole collisions don't have anything to do with nets
     if( Kind() == HOLE_T && aHead->Kind() == HOLE_T )
         differentNetsOnly = false;