Merge remote-tracking branch 'origin/wip/qt6' into wip/cmake

Change-Id: I715b1d743d5f11560e7b3fbeb8fd64a5e5ddb277

4 files changed, 197 insertions, 166 deletions

diff --git a/src/xml/doc/qtxml.qdocconf b/src/xml/doc/qtxml.qdocconf
index a23915487f..25a463fecd 100644
--- a/src/xml/doc/qtxml.qdocconf
+++ b/src/xml/doc/qtxml.qdocconf
@@ -1,4 +1,5 @@
 include($QT_INSTALL_DOCS/global/qt-module-defaults.qdocconf)
+include($QT_INSTALL_DOCS/config/exampleurl-qtbase.qdocconf)
 
 project                 = QtXml
 description             = Qt XML Reference Documentation
diff --git a/src/xml/doc/src/dontdocument.qdoc b/src/xml/doc/src/dontdocument.qdoc
new file mode 100644
index 0000000000..0193ace4b4
--- /dev/null
+++ b/src/xml/doc/src/dontdocument.qdoc
@@ -0,0 +1,30 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+  \dontdocument (QTypeInfo)
+*/
diff --git a/src/xml/dom/qdom.cpp b/src/xml/dom/qdom.cpp
index 6498d53b96..8d232237bf 100644
--- a/src/xml/dom/qdom.cpp
+++ b/src/xml/dom/qdom.cpp
@@ -136,7 +136,7 @@ public:
 class QDomNodePrivate
 {
 public:
-    QDomNodePrivate(QDomDocumentPrivate*, QDomNodePrivate* parent = 0);
+    QDomNodePrivate(QDomDocumentPrivate*, QDomNodePrivate* parent = nullptr);
     QDomNodePrivate(QDomNodePrivate* n, bool deep);
     virtual ~QDomNodePrivate();
 
@@ -159,11 +159,11 @@ public:
     virtual void normalize();
     virtual void clear();
 
-    inline QDomNodePrivate* parent() const { return hasParent ? ownerNode : 0; }
+    inline QDomNodePrivate* parent() const { return hasParent ? ownerNode : nullptr; }
     inline void setParent(QDomNodePrivate *p) { ownerNode = p; hasParent = true; }
 
     void setNoParent() {
-        ownerNode = hasParent ? (QDomNodePrivate*)ownerDocument() : 0;
+        ownerNode = hasParent ? (QDomNodePrivate*)ownerDocument() : nullptr;
         hasParent = false;
     }
 
@@ -289,7 +289,7 @@ public:
 class QDomDocumentTypePrivate : public QDomNodePrivate
 {
 public:
-    QDomDocumentTypePrivate(QDomDocumentPrivate*, QDomNodePrivate* parent = 0);
+    QDomDocumentTypePrivate(QDomDocumentPrivate*, QDomNodePrivate* parent = nullptr);
     QDomDocumentTypePrivate(QDomDocumentTypePrivate* n, bool deep);
     ~QDomDocumentTypePrivate();
     void init();
@@ -317,7 +317,7 @@ public:
 class QDomDocumentFragmentPrivate : public QDomNodePrivate
 {
 public:
-    QDomDocumentFragmentPrivate(QDomDocumentPrivate*, QDomNodePrivate* parent = 0);
+    QDomDocumentFragmentPrivate(QDomDocumentPrivate*, QDomNodePrivate* parent = nullptr);
     QDomDocumentFragmentPrivate(QDomNodePrivate* n, bool deep);
 
     // Reimplemented from QDomNodePrivate
@@ -907,7 +907,7 @@ QDomImplementationPrivate* QDomImplementationPrivate::clone()
 */
 QDomImplementation::QDomImplementation()
 {
-    impl = 0;
+    impl = nullptr;
 }
 
 /*!
@@ -1036,7 +1036,7 @@ QDomDocumentType QDomImplementation::createDocumentType(const QString& qName, co
     if (!ok)
         return QDomDocumentType();
 
-    QDomDocumentTypePrivate *dt = new QDomDocumentTypePrivate(0);
+    QDomDocumentTypePrivate *dt = new QDomDocumentTypePrivate(nullptr);
     dt->name = fixedName;
     if (systemId.isNull()) {
         dt->publicId.clear();
@@ -1070,7 +1070,7 @@ QDomDocument QDomImplementation::createDocument(const QString& nsURI, const QStr
 */
 bool QDomImplementation::isNull()
 {
-    return (impl == 0);
+    return (impl == nullptr);
 }
 
 /*!
@@ -1244,14 +1244,14 @@ void QDomNodeListPrivate::createList()
 QDomNodePrivate* QDomNodeListPrivate::item(int index)
 {
     if (!node_impl)
-        return 0;
+        return nullptr;
 
     const QDomDocumentPrivate *const doc = node_impl->ownerDocument();
     if (!doc || timestamp != doc->nodeListTime)
         createList();
 
     if (index >= list.size())
-        return 0;
+        return nullptr;
 
     return list.at(index);
 }
@@ -1305,13 +1305,13 @@ int QDomNodeListPrivate::length() const
     Creates an empty node list.
 */
 QDomNodeList::QDomNodeList()
+    : impl(nullptr)
 {
-    impl = 0;
 }
 
 QDomNodeList::QDomNodeList(QDomNodeListPrivate* p)
+    : impl(p)
 {
-    impl = p;
 }
 
 /*!
@@ -1443,10 +1443,10 @@ QDomNodePrivate::QDomNodePrivate(QDomDocumentPrivate *doc, QDomNodePrivate *par)
         setParent(par);
     else
         setOwnerDocument(doc);
-    prev = 0;
-    next = 0;
-    first = 0;
-    last = 0;
+    prev = nullptr;
+    next = nullptr;
+    first = nullptr;
+    last = nullptr;
     createdWithDom1Interface = true;
     lineNumber = -1;
     columnNumber = -1;
@@ -1455,10 +1455,10 @@ QDomNodePrivate::QDomNodePrivate(QDomDocumentPrivate *doc, QDomNodePrivate *par)
 QDomNodePrivate::QDomNodePrivate(QDomNodePrivate *n, bool deep) : ref(1)
 {
     setOwnerDocument(n->ownerDocument());
-    prev = 0;
-    next = 0;
-    first = 0;
-    last = 0;
+    prev = nullptr;
+    next = nullptr;
+    first = nullptr;
+    last = nullptr;
 
     name = n->name;
     value = n->value;
@@ -1488,8 +1488,8 @@ QDomNodePrivate::~QDomNodePrivate()
             p->setNoParent();
         p = n;
     }
-    first = 0;
-    last = 0;
+    first = nullptr;
+    last = nullptr;
 }
 
 void QDomNodePrivate::clear()
@@ -1503,8 +1503,8 @@ void QDomNodePrivate::clear()
             delete p;
         p = n;
     }
-    first = 0;
-    last = 0;
+    first = nullptr;
+    last = nullptr;
 }
 
 QDomNodePrivate* QDomNodePrivate::namedItem(const QString &n)
@@ -1515,7 +1515,7 @@ QDomNodePrivate* QDomNodePrivate::namedItem(const QString &n)
             return p;
         p = p->next;
     }
-    return 0;
+    return nullptr;
 }
 
 
@@ -1523,15 +1523,15 @@ QDomNodePrivate* QDomNodePrivate::insertBefore(QDomNodePrivate* newChild, QDomNo
 {
     // Error check
     if (!newChild)
-        return 0;
+        return nullptr;
 
     // Error check
     if (newChild == refChild)
-        return 0;
+        return nullptr;
 
     // Error check
     if (refChild && refChild->parent() != this)
-        return 0;
+        return nullptr;
 
     // "mark lists as dirty"
     QDomDocumentPrivate *const doc = ownerDocument();
@@ -1542,7 +1542,7 @@ QDomNodePrivate* QDomNodePrivate::insertBefore(QDomNodePrivate* newChild, QDomNo
     // all elements of the fragment instead of the fragment itself.
     if (newChild->isDocumentFragment()) {
         // Fragment is empty ?
-        if (newChild->first == 0)
+        if (newChild->first == nullptr)
             return newChild;
 
         // New parent
@@ -1553,7 +1553,7 @@ QDomNodePrivate* QDomNodePrivate::insertBefore(QDomNodePrivate* newChild, QDomNo
         }
 
         // Insert at the beginning ?
-        if (!refChild || refChild->prev == 0) {
+        if (!refChild || refChild->prev == nullptr) {
             if (first)
                 first->prev = newChild->last;
             newChild->last->next = first;
@@ -1572,8 +1572,8 @@ QDomNodePrivate* QDomNodePrivate::insertBefore(QDomNodePrivate* newChild, QDomNo
         // does not decrease the reference.
 
         // Remove the nodes from the fragment
-        newChild->first = 0;
-        newChild->last = 0;
+        newChild->first = nullptr;
+        newChild->last = nullptr;
         return newChild;
     }
 
@@ -1596,7 +1596,7 @@ QDomNodePrivate* QDomNodePrivate::insertBefore(QDomNodePrivate* newChild, QDomNo
         return newChild;
     }
 
-    if (refChild->prev == 0) {
+    if (refChild->prev == nullptr) {
         if (first)
             first->prev = newChild;
         newChild->next = first;
@@ -1618,15 +1618,15 @@ QDomNodePrivate* QDomNodePrivate::insertAfter(QDomNodePrivate* newChild, QDomNod
 {
     // Error check
     if (!newChild)
-        return 0;
+        return nullptr;
 
     // Error check
     if (newChild == refChild)
-        return 0;
+        return nullptr;
 
     // Error check
     if (refChild && refChild->parent() != this)
-        return 0;
+        return nullptr;
 
     // "mark lists as dirty"
     QDomDocumentPrivate *const doc = ownerDocument();
@@ -1637,7 +1637,7 @@ QDomNodePrivate* QDomNodePrivate::insertAfter(QDomNodePrivate* newChild, QDomNod
     // all elements of the fragment instead of the fragment itself.
     if (newChild->isDocumentFragment()) {
         // Fragment is empty ?
-        if (newChild->first == 0)
+        if (newChild->first == nullptr)
             return newChild;
 
         // New parent
@@ -1648,7 +1648,7 @@ QDomNodePrivate* QDomNodePrivate::insertAfter(QDomNodePrivate* newChild, QDomNod
         }
 
         // Insert at the end
-        if (!refChild || refChild->next == 0) {
+        if (!refChild || refChild->next == nullptr) {
             if (last)
                 last->next = newChild->first;
             newChild->first->prev = last;
@@ -1666,8 +1666,8 @@ QDomNodePrivate* QDomNodePrivate::insertAfter(QDomNodePrivate* newChild, QDomNod
         // does not decrease the reference.
 
         // Remove the nodes from the fragment
-        newChild->first = 0;
-        newChild->last = 0;
+        newChild->first = nullptr;
+        newChild->last = nullptr;
         return newChild;
     }
 
@@ -1692,7 +1692,7 @@ QDomNodePrivate* QDomNodePrivate::insertAfter(QDomNodePrivate* newChild, QDomNod
         return newChild;
     }
 
-    if (refChild->next == 0) {
+    if (refChild->next == nullptr) {
         if (last)
             last->next = newChild;
         newChild->prev = last;
@@ -1713,11 +1713,11 @@ QDomNodePrivate* QDomNodePrivate::insertAfter(QDomNodePrivate* newChild, QDomNod
 QDomNodePrivate* QDomNodePrivate::replaceChild(QDomNodePrivate* newChild, QDomNodePrivate* oldChild)
 {
     if (!newChild || !oldChild)
-        return 0;
+        return nullptr;
     if (oldChild->parent() != this)
-        return 0;
+        return nullptr;
     if (newChild == oldChild)
-        return 0;
+        return nullptr;
 
     // mark lists as dirty
     QDomDocumentPrivate *const doc = ownerDocument();
@@ -1728,7 +1728,7 @@ QDomNodePrivate* QDomNodePrivate::replaceChild(QDomNodePrivate* newChild, QDomNo
     // all elements of the fragment instead of the fragment itself.
     if (newChild->isDocumentFragment()) {
         // Fragment is empty ?
-        if (newChild->first == 0)
+        if (newChild->first == nullptr)
             return newChild;
 
         // New parent
@@ -1753,15 +1753,15 @@ QDomNodePrivate* QDomNodePrivate::replaceChild(QDomNodePrivate* newChild, QDomNo
             last = newChild->last;
 
         oldChild->setNoParent();
-        oldChild->next = 0;
-        oldChild->prev = 0;
+        oldChild->next = nullptr;
+        oldChild->prev = nullptr;
 
         // No need to increase the reference since QDomDocumentFragment
         // does not decrease the reference.
 
         // Remove the nodes from the fragment
-        newChild->first = 0;
-        newChild->last = 0;
+        newChild->first = nullptr;
+        newChild->last = nullptr;
 
         // We are no longer interested in the old node
         if (oldChild)
@@ -1794,8 +1794,8 @@ QDomNodePrivate* QDomNodePrivate::replaceChild(QDomNodePrivate* newChild, QDomNo
         last = newChild;
 
     oldChild->setNoParent();
-    oldChild->next = 0;
-    oldChild->prev = 0;
+    oldChild->next = nullptr;
+    oldChild->prev = nullptr;
 
     // We are no longer interested in the old node
     if (oldChild)
@@ -1808,7 +1808,7 @@ QDomNodePrivate* QDomNodePrivate::removeChild(QDomNodePrivate* oldChild)
 {
     // Error check
     if (oldChild->parent() != this)
-        return 0;
+        return nullptr;
 
     // "mark lists as dirty"
     QDomDocumentPrivate *const doc = ownerDocument();
@@ -1817,8 +1817,8 @@ QDomNodePrivate* QDomNodePrivate::removeChild(QDomNodePrivate* oldChild)
 
     // Perhaps oldChild was just created with "createElement" or that. In this case
     // its parent is QDomDocument but it is not part of the documents child list.
-    if (oldChild->next == 0 && oldChild->prev == 0 && first != oldChild)
-        return 0;
+    if (oldChild->next == nullptr && oldChild->prev == nullptr && first != oldChild)
+        return nullptr;
 
     if (oldChild->next)
         oldChild->next->prev = oldChild->prev;
@@ -1831,8 +1831,8 @@ QDomNodePrivate* QDomNodePrivate::removeChild(QDomNodePrivate* oldChild)
         first = oldChild->next;
 
     oldChild->setNoParent();
-    oldChild->next = 0;
-    oldChild->prev = 0;
+    oldChild->next = nullptr;
+    oldChild->prev = nullptr;
 
     // We are no longer interested in the old node
     oldChild->ref.deref();
@@ -1843,7 +1843,7 @@ QDomNodePrivate* QDomNodePrivate::removeChild(QDomNodePrivate* oldChild)
 QDomNodePrivate* QDomNodePrivate::appendChild(QDomNodePrivate* newChild)
 {
     // No reference manipulation needed. Done in insertAfter.
-    return insertAfter(newChild, 0);
+    return insertAfter(newChild, nullptr);
 }
 
 QDomDocumentPrivate* QDomNodePrivate::ownerDocument()
@@ -1869,7 +1869,7 @@ QDomNodePrivate* QDomNodePrivate::cloneNode(bool deep)
 static void qNormalizeNode(QDomNodePrivate* n)
 {
     QDomNodePrivate* p = n->first;
-    QDomTextPrivate* t = 0;
+    QDomTextPrivate* t = nullptr;
 
     while (p) {
         if (p->isText()) {
@@ -1884,7 +1884,7 @@ static void qNormalizeNode(QDomNodePrivate* n)
             }
         } else {
             p = p->next;
-            t = 0;
+            t = nullptr;
         }
     }
 }
@@ -2009,8 +2009,8 @@ void QDomNodePrivate::setLocation(int lineNumber, int columnNumber)
     Constructs a \l{isNull()}{null} node.
 */
 QDomNode::QDomNode()
+    : impl(nullptr)
 {
-    impl = 0;
 }
 
 /*!
@@ -2619,7 +2619,7 @@ bool QDomNode::hasChildNodes() const
 {
     if (!impl)
         return false;
-    return IMPL->first != 0;
+    return IMPL->first != nullptr;
 }
 
 /*!
@@ -2628,7 +2628,7 @@ bool QDomNode::hasChildNodes() const
 */
 bool QDomNode::isNull() const
 {
-    return (impl == 0);
+    return (impl == nullptr);
 }
 
 /*!
@@ -2641,7 +2641,7 @@ void QDomNode::clear()
 {
     if (impl && !impl->ref.deref())
         delete impl;
-    impl = 0;
+    impl = nullptr;
 }
 
 /*!
@@ -3094,13 +3094,13 @@ QDomNodePrivate* QDomNamedNodeMapPrivate::namedItemNS(const QString& nsURI, cons
                 return n;
         }
     }
-    return 0;
+    return nullptr;
 }
 
 QDomNodePrivate* QDomNamedNodeMapPrivate::setNamedItem(QDomNodePrivate* arg)
 {
     if (readonly || !arg)
-        return 0;
+        return nullptr;
 
     if (appendToParent)
         return parent->appendChild(arg);
@@ -3115,7 +3115,7 @@ QDomNodePrivate* QDomNamedNodeMapPrivate::setNamedItem(QDomNodePrivate* arg)
 QDomNodePrivate* QDomNamedNodeMapPrivate::setNamedItemNS(QDomNodePrivate* arg)
 {
     if (readonly || !arg)
-        return 0;
+        return nullptr;
 
     if (appendToParent)
         return parent->appendChild(arg);
@@ -3136,11 +3136,11 @@ QDomNodePrivate* QDomNamedNodeMapPrivate::setNamedItemNS(QDomNodePrivate* arg)
 QDomNodePrivate* QDomNamedNodeMapPrivate::removeNamedItem(const QString& name)
 {
     if (readonly)
-        return 0;
+        return nullptr;
 
     QDomNodePrivate* p = namedItem(name);
-    if (p == 0)
-        return 0;
+    if (p == nullptr)
+        return nullptr;
     if (appendToParent)
         return parent->removeChild(p);
 
@@ -3153,7 +3153,7 @@ QDomNodePrivate* QDomNamedNodeMapPrivate::removeNamedItem(const QString& name)
 QDomNodePrivate* QDomNamedNodeMapPrivate::item(int index) const
 {
     if (index >= length() || index < 0)
-        return 0;
+        return nullptr;
     return *(map.constBegin() + index);
 }
 
@@ -3164,12 +3164,12 @@ int QDomNamedNodeMapPrivate::length() const
 
 bool QDomNamedNodeMapPrivate::contains(const QString& name) const
 {
-    return map.value(name) != 0;
+    return map.contains(name);
 }
 
 bool QDomNamedNodeMapPrivate::containsNS(const QString& nsURI, const QString & localName) const
 {
-    return namedItemNS(nsURI, localName) != 0;
+    return namedItemNS(nsURI, localName) != nullptr;
 }
 
 /**************************************************************
@@ -3222,8 +3222,8 @@ bool QDomNamedNodeMapPrivate::containsNS(const QString& nsURI, const QString & l
     Constructs an empty named node map.
 */
 QDomNamedNodeMap::QDomNamedNodeMap()
+    : impl(nullptr)
 {
-    impl = 0;
 }
 
 /*!
@@ -3570,7 +3570,7 @@ QDomNodePrivate* QDomDocumentTypePrivate::removeChild(QDomNodePrivate* oldChild)
 
 QDomNodePrivate* QDomDocumentTypePrivate::appendChild(QDomNodePrivate* newChild)
 {
-    return insertAfter(newChild, 0);
+    return insertAfter(newChild, nullptr);
 }
 
 static QString quotedValue(const QString &data)
@@ -4115,7 +4115,7 @@ QDomAttrPrivate::QDomAttrPrivate(QDomAttrPrivate* n, bool deep)
 void QDomAttrPrivate::setNodeValue(const QString& v)
 {
     value = v;
-    QDomTextPrivate *t = new QDomTextPrivate(0, this, v);
+    QDomTextPrivate *t = new QDomTextPrivate(nullptr, this, v);
     // keep the refcount balanced: appendChild() does a ref anyway.
     t->ref.deref();
     if (first) {
@@ -4489,7 +4489,7 @@ void QDomElementPrivate::setAttributeNS(const QString& nsURI, const QString& qNa
 void QDomElementPrivate::removeAttribute(const QString& aname)
 {
     QDomNodePrivate* p = m_attr->removeNamedItem(aname);
-    if (p && p->ref.load() == 0)
+    if (p && p->ref.loadRelaxed() == 0)
         delete p;
 }
 
@@ -4517,7 +4517,7 @@ QDomAttrPrivate* QDomElementPrivate::setAttributeNode(QDomAttrPrivate* newAttr)
 
 QDomAttrPrivate* QDomElementPrivate::setAttributeNodeNS(QDomAttrPrivate* newAttr)
 {
-    QDomNodePrivate* n = 0;
+    QDomNodePrivate* n = nullptr;
     if (!newAttr->prefix.isNull())
         n = m_attr->namedItemNS(newAttr->namespaceURI, newAttr->name);
 
@@ -5184,10 +5184,10 @@ QDomTextPrivate* QDomTextPrivate::splitText(int offset)
 {
     if (!parent()) {
         qWarning("QDomText::splitText  The node has no parent. So I cannot split");
-        return 0;
+        return nullptr;
     }
 
-    QDomTextPrivate* t = new QDomTextPrivate(ownerDocument(), 0, value.mid(offset));
+    QDomTextPrivate* t = new QDomTextPrivate(ownerDocument(), nullptr, value.mid(offset));
     value.truncate(offset);
 
     parent()->insertAfter(t, this);
@@ -6144,7 +6144,7 @@ void QDomProcessingInstruction::setData(const QString& d)
  **************************************************************/
 
 QDomDocumentPrivate::QDomDocumentPrivate()
-    : QDomNodePrivate(0),
+    : QDomNodePrivate(nullptr),
       impl(new QDomImplementationPrivate),
       nodeListTime(1)
 {
@@ -6155,7 +6155,7 @@ QDomDocumentPrivate::QDomDocumentPrivate()
 }
 
 QDomDocumentPrivate::QDomDocumentPrivate(const QString& aname)
-    : QDomNodePrivate(0),
+    : QDomNodePrivate(nullptr),
       impl(new QDomImplementationPrivate),
       nodeListTime(1)
 {
@@ -6167,11 +6167,11 @@ QDomDocumentPrivate::QDomDocumentPrivate(const QString& aname)
 }
 
 QDomDocumentPrivate::QDomDocumentPrivate(QDomDocumentTypePrivate* dt)
-    : QDomNodePrivate(0),
+    : QDomNodePrivate(nullptr),
       impl(new QDomImplementationPrivate),
       nodeListTime(1)
 {
-    if (dt != 0) {
+    if (dt != nullptr) {
         type = dt;
     } else {
         type = new QDomDocumentTypePrivate(this, this);
@@ -6267,9 +6267,9 @@ QDomElementPrivate* QDomDocumentPrivate::createElement(const QString &tagName)
     bool ok;
     QString fixedName = fixedXmlName(tagName, &ok);
     if (!ok)
-        return 0;
+        return nullptr;
 
-    QDomElementPrivate *e = new QDomElementPrivate(this, 0, fixedName);
+    QDomElementPrivate *e = new QDomElementPrivate(this, nullptr, fixedName);
     e->ref.deref();
     return e;
 }
@@ -6279,16 +6279,16 @@ QDomElementPrivate* QDomDocumentPrivate::createElementNS(const QString &nsURI, c
     bool ok;
     QString fixedName = fixedXmlName(qName, &ok, true);
     if (!ok)
-        return 0;
+        return nullptr;
 
-    QDomElementPrivate *e = new QDomElementPrivate(this, 0, nsURI, fixedName);
+    QDomElementPrivate *e = new QDomElementPrivate(this, nullptr, nsURI, fixedName);
     e->ref.deref();
     return e;
 }
 
 QDomDocumentFragmentPrivate* QDomDocumentPrivate::createDocumentFragment()
 {
-    QDomDocumentFragmentPrivate *f = new QDomDocumentFragmentPrivate(this, (QDomNodePrivate*)0);
+    QDomDocumentFragmentPrivate *f = new QDomDocumentFragmentPrivate(this, (QDomNodePrivate*)nullptr);
     f->ref.deref();
     return f;
 }
@@ -6298,9 +6298,9 @@ QDomTextPrivate* QDomDocumentPrivate::createTextNode(const QString &data)
     bool ok;
     QString fixedData = fixedCharData(data, &ok);
     if (!ok)
-        return 0;
+        return nullptr;
 
-    QDomTextPrivate *t = new QDomTextPrivate(this, 0, fixedData);
+    QDomTextPrivate *t = new QDomTextPrivate(this, nullptr, fixedData);
     t->ref.deref();
     return t;
 }
@@ -6310,9 +6310,9 @@ QDomCommentPrivate* QDomDocumentPrivate::createComment(const QString &data)
     bool ok;
     QString fixedData = fixedComment(data, &ok);
     if (!ok)
-        return 0;
+        return nullptr;
 
-    QDomCommentPrivate *c = new QDomCommentPrivate(this, 0, fixedData);
+    QDomCommentPrivate *c = new QDomCommentPrivate(this, nullptr, fixedData);
     c->ref.deref();
     return c;
 }
@@ -6322,9 +6322,9 @@ QDomCDATASectionPrivate* QDomDocumentPrivate::createCDATASection(const QString &
     bool ok;
     QString fixedData = fixedCDataSection(data, &ok);
     if (!ok)
-        return 0;
+        return nullptr;
 
-    QDomCDATASectionPrivate *c = new QDomCDATASectionPrivate(this, 0, fixedData);
+    QDomCDATASectionPrivate *c = new QDomCDATASectionPrivate(this, nullptr, fixedData);
     c->ref.deref();
     return c;
 }
@@ -6335,13 +6335,13 @@ QDomProcessingInstructionPrivate* QDomDocumentPrivate::createProcessingInstructi
     bool ok;
     QString fixedData = fixedPIData(data, &ok);
     if (!ok)
-        return 0;
+        return nullptr;
     // [17] PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
     QString fixedTarget = fixedXmlName(target, &ok);
     if (!ok)
-        return 0;
+        return nullptr;
 
-    QDomProcessingInstructionPrivate *p = new QDomProcessingInstructionPrivate(this, 0, fixedTarget, fixedData);
+    QDomProcessingInstructionPrivate *p = new QDomProcessingInstructionPrivate(this, nullptr, fixedTarget, fixedData);
     p->ref.deref();
     return p;
 }
@@ -6350,9 +6350,9 @@ QDomAttrPrivate* QDomDocumentPrivate::createAttribute(const QString &aname)
     bool ok;
     QString fixedName = fixedXmlName(aname, &ok);
     if (!ok)
-        return 0;
+        return nullptr;
 
-    QDomAttrPrivate *a = new QDomAttrPrivate(this, 0, fixedName);
+    QDomAttrPrivate *a = new QDomAttrPrivate(this, nullptr, fixedName);
     a->ref.deref();
     return a;
 }
@@ -6362,9 +6362,9 @@ QDomAttrPrivate* QDomDocumentPrivate::createAttributeNS(const QString &nsURI, co
     bool ok;
     QString fixedName = fixedXmlName(qName, &ok, true);
     if (!ok)
-        return 0;
+        return nullptr;
 
-    QDomAttrPrivate *a = new QDomAttrPrivate(this, 0, nsURI, fixedName);
+    QDomAttrPrivate *a = new QDomAttrPrivate(this, nullptr, nsURI, fixedName);
     a->ref.deref();
     return a;
 }
@@ -6374,16 +6374,16 @@ QDomEntityReferencePrivate* QDomDocumentPrivate::createEntityReference(const QSt
     bool ok;
     QString fixedName = fixedXmlName(aname, &ok);
     if (!ok)
-        return 0;
+        return nullptr;
 
-    QDomEntityReferencePrivate *e = new QDomEntityReferencePrivate(this, 0, fixedName);
+    QDomEntityReferencePrivate *e = new QDomEntityReferencePrivate(this, nullptr, fixedName);
     e->ref.deref();
     return e;
 }
 
 QDomNodePrivate* QDomDocumentPrivate::importNode(QDomNodePrivate *importedNode, bool deep)
 {
-    QDomNodePrivate *node = 0;
+    QDomNodePrivate *node = nullptr;
     switch (importedNode->nodeType()) {
         case QDomNode::AttributeNode:
             node = new QDomAttrPrivate((QDomAttrPrivate*)importedNode, true);
@@ -6435,7 +6435,7 @@ void QDomDocumentPrivate::saveDocument(QTextStream& s, const int indent, QDomNod
 #if QT_CONFIG(textcodec) && QT_CONFIG(regularexpression)
         const QDomNodePrivate* n = first;
 
-        QTextCodec *codec = 0;
+        QTextCodec *codec = nullptr;
 
         if (n && n->isProcessingInstruction() && n->nodeName() == QLatin1String("xml")) {
             // we have an XML declaration
@@ -6593,7 +6593,7 @@ void QDomDocumentPrivate::saveDocument(QTextStream& s, const int indent, QDomNod
 */
 QDomDocument::QDomDocument()
 {
-    impl = 0;
+    impl = nullptr;
 }
 
 /*!
@@ -6822,7 +6822,7 @@ bool QDomDocument::setContent(QXmlInputSource *source, QXmlReader *reader, QStri
 {
     if (!impl)
         impl = new QDomDocumentPrivate();
-    return IMPL->setContent(source, reader, 0, errorMsg, errorLine, errorColumn);
+    return IMPL->setContent(source, reader, nullptr, errorMsg, errorLine, errorColumn);
 }
 
 /*!
@@ -7369,7 +7369,7 @@ QDomComment QDomNode::toComment() const
 
 QDomHandler::QDomHandler(QDomDocumentPrivate* adoc, QXmlSimpleReader* areader, bool namespaceProcessing)
     : errorLine(0), errorColumn(0), doc(adoc), node(adoc), cdata(false),
-        nsProcessing(namespaceProcessing), locator(0), reader(areader)
+        nsProcessing(namespaceProcessing), locator(nullptr), reader(areader)
 {
 }
 
@@ -7443,7 +7443,7 @@ bool QDomHandler::characters(const QString&  ch)
     if (cdata) {
         n.reset(doc->createCDATASection(ch));
     } else if (!entityName.isEmpty()) {
-        QScopedPointer<QDomEntityPrivate> e(new QDomEntityPrivate(doc, 0, entityName,
+        QScopedPointer<QDomEntityPrivate> e(new QDomEntityPrivate(doc, nullptr, entityName,
                 QString(), QString(), QString()));
         e->value = ch;
         e->ref.deref();
@@ -7528,7 +7528,7 @@ bool QDomHandler::comment(const QString& ch)
 
 bool QDomHandler::unparsedEntityDecl(const QString &name, const QString &publicId, const QString &systemId, const QString &notationName)
 {
-    QDomEntityPrivate* e = new QDomEntityPrivate(doc, 0, name,
+    QDomEntityPrivate* e = new QDomEntityPrivate(doc, nullptr, name,
             publicId, systemId, notationName);
     // keep the refcount balanced: appendChild() does a ref anyway.
     e->ref.deref();
@@ -7543,7 +7543,7 @@ bool QDomHandler::externalEntityDecl(const QString &name, const QString &publicI
 
 bool QDomHandler::notationDecl(const QString & name, const QString & publicId, const QString & systemId)
 {
-    QDomNotationPrivate* n = new QDomNotationPrivate(doc, 0, name, publicId, systemId);
+    QDomNotationPrivate* n = new QDomNotationPrivate(doc, nullptr, name, publicId, systemId);
     // keep the refcount balanced: appendChild() does a ref anyway.
     n->ref.deref();
     doc->doctype()->appendChild(n);
diff --git a/src/xml/sax/qxml.cpp b/src/xml/sax/qxml.cpp
index b2fff5b61f..1c45118fb1 100644
--- a/src/xml/sax/qxml.cpp
+++ b/src/xml/sax/qxml.cpp
@@ -1079,12 +1079,12 @@ void QXmlInputSource::init()
     d = new QXmlInputSourcePrivate;
 
     QT_TRY {
-        d->inputDevice = 0;
-        d->inputStream = 0;
+        d->inputDevice = nullptr;
+        d->inputStream = nullptr;
 
         setData(QString());
 #if QT_CONFIG(textcodec)
-        d->encMapper = 0;
+        d->encMapper = nullptr;
 #endif
         d->nextReturnedEndOfData = true; // first call to next() will call fetchData()
 
@@ -1357,13 +1357,13 @@ QString QXmlInputSource::fromRawData(const QByteArray &data, bool beginning)
         return QString();
     if (beginning) {
         delete d->encMapper;
-        d->encMapper = 0;
+        d->encMapper = nullptr;
     }
 
     int mib = 106; // UTF-8
 
     // This is the initial UTF codec we will read the encoding declaration with
-    if (d->encMapper == 0) {
+    if (d->encMapper == nullptr) {
         d->encodingDeclBytes.clear();
         d->encodingDeclChars.clear();
         d->lookingForEncodingDecl = true;
@@ -2377,7 +2377,7 @@ bool QXmlDefaultHandler::unparsedEntityDecl(const QString&, const QString&,
 bool QXmlDefaultHandler::resolveEntity(const QString&, const QString&,
         QXmlInputSource*& ret)
 {
-    ret = 0;
+    ret = nullptr;
     return true;
 }
 
@@ -2520,15 +2520,15 @@ inline void QXmlSimpleReaderPrivate::refClear()
 QXmlSimpleReaderPrivate::QXmlSimpleReaderPrivate(QXmlSimpleReader *reader)
 {
     q_ptr = reader;
-    parseStack = 0;
+    parseStack = nullptr;
 
     locator.reset(new QXmlSimpleReaderLocator(reader));
-    entityRes  = 0;
-    dtdHnd     = 0;
-    contentHnd = 0;
-    errorHnd   = 0;
-    lexicalHnd = 0;
-    declHnd    = 0;
+    entityRes  = nullptr;
+    dtdHnd     = nullptr;
+    contentHnd = nullptr;
+    errorHnd   = nullptr;
+    lexicalHnd = nullptr;
+    declHnd    = nullptr;
 
     // default feature settings
     useNamespaces = true;
@@ -2932,7 +2932,7 @@ bool QXmlSimpleReader::feature(const QString& name, bool *ok) const
 {
     const QXmlSimpleReaderPrivate *d = d_func();
 
-    if (ok != 0)
+    if (ok)
         *ok = true;
     if (name == QLatin1String("http://xml.org/sax/features/namespaces")) {
         return d->useNamespaces;
@@ -2946,7 +2946,7 @@ bool QXmlSimpleReader::feature(const QString& name, bool *ok) const
         return d->reportEntities;
     } else {
         qWarning("Unknown feature %s", name.toLatin1().data());
-        if (ok != 0)
+        if (ok)
             *ok = false;
     }
     return false;
@@ -3023,9 +3023,9 @@ bool QXmlSimpleReader::hasFeature(const QString& name) const
 */
 void* QXmlSimpleReader::property(const QString&, bool *ok) const
 {
-    if (ok != 0)
+    if (ok)
         *ok = false;
-    return 0;
+    return nullptr;
 }
 
 /*! \reimp
@@ -3206,7 +3206,7 @@ bool QXmlSimpleReader::parse(const QXmlInputSource *input, bool incremental)
         d->initIncrementalParsing();
     } else {
         delete d->parseStack;
-        d->parseStack = 0;
+        d->parseStack = nullptr;
     }
     d->init(input);
 
@@ -3251,7 +3251,7 @@ bool QXmlSimpleReader::parse(const QXmlInputSource *input, bool incremental)
 bool QXmlSimpleReader::parseContinue()
 {
     Q_D(QXmlSimpleReader);
-    if (d->parseStack == 0 || d->parseStack->isEmpty())
+    if (d->parseStack == nullptr || d->parseStack->isEmpty())
         return false;
     d->initData();
     int state = d->parseStack->pop().state;
@@ -3268,7 +3268,7 @@ bool QXmlSimpleReaderPrivate::parseBeginOrContinue(int state, bool incremental)
     if (state==0) {
         if (!parseProlog()) {
             if (incremental && error.isNull()) {
-                pushParseState(0, 0);
+                pushParseState(nullptr, 0);
                 return true;
             } else {
                 clear(tags);
@@ -3280,7 +3280,7 @@ bool QXmlSimpleReaderPrivate::parseBeginOrContinue(int state, bool incremental)
     if (state==1) {
         if (!parseElement()) {
             if (incremental && error.isNull()) {
-                pushParseState(0, 1);
+                pushParseState(nullptr, 1);
                 return true;
             } else {
                 clear(tags);
@@ -3293,7 +3293,7 @@ bool QXmlSimpleReaderPrivate::parseBeginOrContinue(int state, bool incremental)
     while (!atEnd()) {
         if (!parseMisc()) {
             if (incremental && error.isNull()) {
-                pushParseState(0, 2);
+                pushParseState(nullptr, 2);
                 return true;
             } else {
                 clear(tags);
@@ -3303,7 +3303,7 @@ bool QXmlSimpleReaderPrivate::parseBeginOrContinue(int state, bool incremental)
     }
     if (!atEndOrig && incremental) {
         // we parsed something at all, so be prepared to come back later
-        pushParseState(0, 2);
+        pushParseState(nullptr, 2);
         return true;
     }
     // is stack empty?
@@ -3315,7 +3315,7 @@ bool QXmlSimpleReaderPrivate::parseBeginOrContinue(int state, bool incremental)
     // call the handler
     if (contentHnd) {
         delete parseStack;
-        parseStack = 0;
+        parseStack = nullptr;
         if (!contentHnd->endDocument()) {
             reportParseError(contentHnd->errorString());
             return false;
@@ -3350,7 +3350,7 @@ bool QXmlSimpleReaderPrivate::parseBeginOrContinue(int state, bool incremental)
         signed char state;
         signed char input;
 
-(4)        if (d->parseStack == 0 || d->parseStack->isEmpty()) {
+(4)        if (d->parseStack == nullptr || d->parseStack->isEmpty()) {
 (4a)        ...
         } else {
 (4b)        ...
@@ -3440,7 +3440,7 @@ bool QXmlSimpleReaderPrivate::parseProlog()
     signed char state;
     signed char input;
 
-    if (parseStack == 0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr|| parseStack->isEmpty()) {
         xmldecl_possible = true;
         doctype_read = false;
         state = Init;
@@ -3631,7 +3631,7 @@ bool QXmlSimpleReaderPrivate::parseElement()
     int state;
     int input;
 
-    if (parseStack == 0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr|| parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -4000,7 +4000,7 @@ bool QXmlSimpleReaderPrivate::parseContent()
     signed char state;
     signed char input;
 
-    if (parseStack == 0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         contentCharDataRead = false;
         state = Init;
     } else {
@@ -4303,7 +4303,7 @@ bool QXmlSimpleReaderPrivate::parseMisc()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -4458,7 +4458,7 @@ bool QXmlSimpleReaderPrivate::parsePI()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -4685,7 +4685,7 @@ bool QXmlSimpleReaderPrivate::parseDoctype()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         startDTDwasReported = false;
         systemId.clear();
         publicId.clear();
@@ -4896,7 +4896,7 @@ bool QXmlSimpleReaderPrivate::parseExternalID()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         systemId.clear();
         publicId.clear();
         state = Init;
@@ -5060,7 +5060,7 @@ bool QXmlSimpleReaderPrivate::parseMarkupdecl()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -5218,7 +5218,7 @@ bool QXmlSimpleReaderPrivate::parsePEReference()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -5255,7 +5255,7 @@ bool QXmlSimpleReaderPrivate::parsePEReference()
                     } else if (entityRes) {
                         QMap<QString,QXmlSimpleReaderPrivate::ExternParameterEntity>::Iterator it2;
                         it2 = externParameterEntities.find(ref());
-                        QXmlInputSource *ret = 0;
+                        QXmlInputSource *ret = nullptr;
                         if (it2 != externParameterEntities.end()) {
                             if (!entityRes->resolveEntity((*it2).publicId, (*it2).systemId, ret)) {
                                 delete ret;
@@ -5396,7 +5396,7 @@ bool QXmlSimpleReaderPrivate::parseAttlistDecl()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -5612,7 +5612,7 @@ bool QXmlSimpleReaderPrivate::parseAttType()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -5833,7 +5833,7 @@ bool QXmlSimpleReaderPrivate::parseAttValue()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -5975,7 +5975,7 @@ bool QXmlSimpleReaderPrivate::parseElementDecl()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -6184,7 +6184,7 @@ bool QXmlSimpleReaderPrivate::parseNotationDecl()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -6328,7 +6328,7 @@ bool QXmlSimpleReaderPrivate::parseChoiceSeq()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -6557,7 +6557,7 @@ bool QXmlSimpleReaderPrivate::parseEntityDecl()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -6832,7 +6832,7 @@ bool QXmlSimpleReaderPrivate::parseEntityValue()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -6951,7 +6951,7 @@ bool QXmlSimpleReaderPrivate::parseComment()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -7063,7 +7063,7 @@ bool QXmlSimpleReaderPrivate::parseAttribute()
     int state;
     int input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -7162,7 +7162,7 @@ bool QXmlSimpleReaderPrivate::parseName()
     };
     int state;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -7248,7 +7248,7 @@ bool QXmlSimpleReaderPrivate::parseNmtoken()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         state = Init;
     } else {
         state = parseStack->pop().state;
@@ -7356,7 +7356,7 @@ bool QXmlSimpleReaderPrivate::parseReference()
     signed char state;
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         parseReference_charDataRead = false;
         state = Init;
     } else {
@@ -7582,7 +7582,7 @@ bool QXmlSimpleReaderPrivate::processReference()
                     if (parseReference_context == InContent) {
                         if (contentCharDataRead) {
                             if (reportWhitespaceCharData || !string().simplified().isEmpty()) {
-                                if (contentHnd != 0 && !contentHnd->characters(string())) {
+                                if (contentHnd != nullptr && !contentHnd->characters(string())) {
                                     reportParseError(contentHnd->errorString());
                                     return false;
                                 }
@@ -7610,7 +7610,7 @@ bool QXmlSimpleReaderPrivate::processReference()
                             // Included if validating
                             bool skipIt = true;
                             if (entityRes) {
-                                QXmlInputSource *ret = 0;
+                                QXmlInputSource *ret = nullptr;
                                 if (!entityRes->resolveEntity((*itExtern).publicId, (*itExtern).systemId, ret)) {
                                     delete ret;
                                     reportParseError(entityRes->errorString());
@@ -7696,7 +7696,7 @@ bool QXmlSimpleReaderPrivate::parseString()
     signed char state; // state in this function is the position in the string s
     signed char input;
 
-    if (parseStack==0 || parseStack->isEmpty()) {
+    if (parseStack == nullptr || parseStack->isEmpty()) {
         Done = parseString_s.length();
         state = 0;
     } else {
@@ -7800,7 +7800,7 @@ void QXmlSimpleReaderPrivate::next()
     c = inputSource->next();
     // If we are not incremental parsing, we just skip over EndOfData chars to give the
     // parser an uninterrupted stream of document chars.
-    if (c == QXmlInputSource::EndOfData && parseStack == 0)
+    if (c == QXmlInputSource::EndOfData && parseStack == nullptr)
         c = inputSource->next();
     if (uc == '\n') {
         lineNr++;
@@ -7832,7 +7832,7 @@ bool QXmlSimpleReaderPrivate::eat_ws()
         }
         next();
     }
-    if (parseStack != 0) {
+    if (parseStack != nullptr) {
         unexpectedEof(&QXmlSimpleReaderPrivate::eat_ws, 0);
         return false;
     }
@@ -7922,7 +7922,7 @@ void QXmlSimpleReaderPrivate::reportParseError(const QString& error)
 */
 void QXmlSimpleReaderPrivate::unexpectedEof(ParseFunction where, int state)
 {
-    if (parseStack == 0) {
+    if (parseStack == nullptr) {
         reportParseError(QLatin1String(XMLERR_UNEXPECTEDEOF));
     } else {
         if (c == QXmlInputSource::EndOfDocument) {
@@ -7942,7 +7942,7 @@ void QXmlSimpleReaderPrivate::unexpectedEof(ParseFunction where, int state)
 */
 void QXmlSimpleReaderPrivate::parseFailed(ParseFunction where, int state)
 {
-    if (parseStack!=0 && error.isNull()) {
+    if (parseStack != nullptr && error.isNull()) {
         pushParseState(where, state);
     }
 }