Avoid an infinite loop in PNS

Fixes: lp:1702485 * https://bugs.launchpad.net/kicad/+bug/1702485
2017-07-06 10:40:52 +02:00 · 2017-07-06 10:40:52 +02:00 · 885a4c1bc5
parent 1724f902a1
commit 885a4c1bc5
1 changed files with 4 additions and 0 deletions
--- a/pcbnew/router/pns_diff_pair.cpp
+++ b/pcbnew/router/pns_diff_pair.cpp
@ -410,6 +410,10 @@ static VECTOR2I makeGapVector( VECTOR2I dir, int length )
 {
    int l = length / 2;
    VECTOR2I rv;
+
+    if( dir.EuclideanNorm() == 0 )
+        return dir;
+
    do
 	{
        rv = dir.Resize( l );