From ef24f25aee5c3d79b7f4b034ec819bd68b758828 Mon Sep 17 00:00:00 2001
From: Robert Loehning <robert.loehning@qt.io>
Date: Fri, 17 Jul 2020 12:48:04 +0200
Subject: Use qFuzzyIsNull instead of isEmpty() on QRectF

Avoids an integer overflow in QOutlineMapper

Fixes: oss-fuzz-24131
Change-Id: I77a280640df4971e440d3f8888d2e7036a1f2e6a
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
(cherry picked from commit 21ae1e161c933ffae38d42fe8191975d5ad8ee6e)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/svg/qsvgtinydocument.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/svg/qsvgtinydocument.cpp b/src/svg/qsvgtinydocument.cpp
index b1bde78..12dd979 100644
--- a/src/svg/qsvgtinydocument.cpp
+++ b/src/svg/qsvgtinydocument.cpp
@@ -433,7 +433,7 @@ void QSvgTinyDocument::mapSourceToTarget(QPainter *p, const QRectF &targetRect,
     if (source.isEmpty())
         source = viewBox();
 
-    if (source != target && !source.isEmpty()) {
+    if (source != target && !qFuzzyIsNull(source.width()) && !qFuzzyIsNull(source.height())) {
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 15, 0))
         if (m_implicitViewBox || !preserveAspectRatio()) {
             // Code path used when no view box is set, or IgnoreAspectRatio requested
-- 
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