From 95252267ec7ba6508a03d6b4a170ca57e95e6ee7 Mon Sep 17 00:00:00 2001
From: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
Date: Mon, 11 Jan 2016 13:37:00 -0500
Subject: [PATCH] Router: check layers of all traversed joints in
 FindLinesBetweenJoints(). (fixes lp:1531762)

---
 pcbnew/router/pns_node.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pcbnew/router/pns_node.cpp b/pcbnew/router/pns_node.cpp
index b276b799a3..3f9bf12c87 100644
--- a/pcbnew/router/pns_node.cpp
+++ b/pcbnew/router/pns_node.cpp
@@ -885,6 +885,9 @@ int PNS_NODE::FindLinesBetweenJoints( PNS_JOINT& aA, PNS_JOINT& aB, std::vector<
             PNS_SEGMENT* seg = static_cast<PNS_SEGMENT*>( item );
             PNS_LINE line = AssembleLine( seg );
 
+            if ( !line.Layers().Overlaps( aB.Layers() ) )
+                continue;
+
             PNS_JOINT j_start, j_end;
 
             FindLineEnds( line, j_start, j_end );