From e95fce3084d5d52b6535cc7a8b7dd6883ffcdabd Mon Sep 17 00:00:00 2001
From: Chocobo1 <Chocobo1@users.noreply.github.com>
Date: Thu, 1 Oct 2015 20:50:23 +0800
Subject: [PATCH] Fix potential crash when memory allocation failed. Closes
 #3877.

---
 src/gui/properties/pieceavailabilitybar.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/gui/properties/pieceavailabilitybar.cpp b/src/gui/properties/pieceavailabilitybar.cpp
index f6e4e53f9..284224d54 100644
--- a/src/gui/properties/pieceavailabilitybar.cpp
+++ b/src/gui/properties/pieceavailabilitybar.cpp
@@ -29,6 +29,7 @@
  */
 
 #include <cmath>
+#include <QDebug>
 #include "pieceavailabilitybar.h"
 
 PieceAvailabilityBar::PieceAvailabilityBar(QWidget *parent) :
@@ -156,8 +157,11 @@ int PieceAvailabilityBar::mixTwoColors(int &rgb1, int &rgb2, float ratio)
 
 void PieceAvailabilityBar::updateImage()
 {
-  //  qDebug() << "updateImageAv";
   QImage image2(width() - 2, 1, QImage::Format_RGB888);
+  if (image2.isNull()) {
+    qDebug() << "QImage image2() allocation failed, width():" << width();
+    return;
+  }
 
   if (m_pieces.empty()) {
     image2.fill(0xffffff);