File CVE-2023-32573.patch of Package libqt4-devel-doc

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File CVE-2023-32573.patch of Package libqt4-devel-doc

From 30f636caa67ff0623c5c9346a433365dfdbb583a Mon Sep 17 00:00:00 2001
From: Than Ngo <than@redhat.com>
Date: May 18 2023 15:15:05 +0000
Subject: fix #2208136, CVE-2023-32573 Uninitialized variable usage in m_unitsPerEm

---

--- a/src/svg/qsvgfont_p.h
+++ b/src/svg/qsvgfont_p.h
@@ -78,6 +78,7 @@ public:
 class QSvgFont : public QSvgRefCounted
 {
 public:
+    static const qreal DEFAULT_UNITS_PER_EM = 1000;
     QSvgFont(qreal horizAdvX);

void setFamilyName(const QString &name);
@@ -90,9 +91,7 @@ public:
     void draw(QPainter *p, const QPointF &point, const QString &str, qreal pixelSize, Qt::Alignment alignment) const;
 public:
     QString m_familyName;
-    qreal m_unitsPerEm;
-    qreal m_ascent;
-    qreal m_descent;
+    qreal m_unitsPerEm = DEFAULT_UNITS_PER_EM;
     qreal m_horizAdvX;
     QHash<QChar, QSvgGlyph> m_glyphs;
 };
--- a/src/svg/qsvghandler.cpp
+++ b/src/svg/qsvghandler.cpp
@@ -2571,7 +2571,7 @@ static bool parseFontFaceNode(QSvgStyleP

qreal unitsPerEm = toDouble(unitsPerEmStr);
     if (!unitsPerEm)
-        unitsPerEm = 1000;
+        unitsPerEm = QSvgFont::DEFAULT_UNITS_PER_EM;

if (!name.isEmpty())
         font->setFamilyName(name);

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