# HG changeset patch
# User Hasan Yavuz ÖZDERYA <hy@ozderya.net>
# Date 2017-04-13 14:07:35
# Node ID e3e70c85583663f108eba4facd88904fce38e1c3
# Parent  d4a271f3d46a61e4119e6f55afd478db51fe7a6e

don't try accessing the point list if there is not enough points

diff --git a/src/zoomer.cpp b/src/zoomer.cpp
--- a/src/zoomer.cpp
+++ b/src/zoomer.cpp
@@ -58,6 +58,11 @@ QwtText Zoomer::trackerTextF(const QPoin
     QwtText b = ScrollZoomer::trackerTextF(pos);
 
     const QPolygon pa = selection();
+    if (pa.count() < 2)
+    {
+        return b;
+    }
+
     const QRectF rect = invTransform(QRect(pa.first(), pa.last()).normalized());
 
     QString sizeText = QString(" [%1, %2]").\