From 98a286cbdecd54e758c7e3ab60fd6e8856b15da0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tor=20Arne=20Vestb=C3=B8?= <tor.arne.vestbo@digia.com>
Date: Wed, 30 Jan 2013 16:17:35 +0100
Subject: [PATCH] Fix segfault when setting a device-pixel-ratio on a
 null-QPixmap
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Change-Id: If3680766a50d5cf78889822d740c9472123191a7
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
---
 src/gui/image/qpixmap.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gui/image/qpixmap.cpp b/src/gui/image/qpixmap.cpp
index 852025117b..ed477e767b 100644
--- a/src/gui/image/qpixmap.cpp
+++ b/src/gui/image/qpixmap.cpp
@@ -678,6 +678,9 @@ qreal QPixmap::devicePixelRatio() const
 */
 void QPixmap::setDevicePixelRatio(qreal scaleFactor)
 {
+    if (isNull())
+        return;
+
     detach();
     data->setDevicePixelRatio(scaleFactor);
 }