Remove level 4 compiler warnings from MSVC.

Task-number: QTBUG-7233

Change-Id: I52067e3a22e98a62fd87415906e54a54ff2d6b49
Reviewed-by: Kurt Pattyn <pattyn.kurt@gmail.com>
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Dave McClelland

10 files changed, 73 insertions, 8 deletions

diff --git a/src/concurrent/qtconcurrentiteratekernel.h b/src/concurrent/qtconcurrentiteratekernel.h
index b47c30aef6..0969029e37 100644
--- a/src/concurrent/qtconcurrentiteratekernel.h
+++ b/src/concurrent/qtconcurrentiteratekernel.h
@@ -86,6 +86,8 @@ private:
     Median<double> controlPartElapsed;
     Median<double> userPartElapsed;
     int m_blockSize;
+
+    Q_DISABLE_COPY(BlockSizeManager)
 };
 
 template <typename T>
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index 0e5c4965f9..9b5d78b6fe 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -881,8 +881,11 @@ struct QForeachContainerBase {};
 
 template <typename T>
 class QForeachContainer : public QForeachContainerBase {
+    QForeachContainer &operator=(const QForeachContainer &) Q_DECL_EQ_DELETE;
 public:
     inline QForeachContainer(const T& t): c(t), brk(0), i(c.begin()), e(c.end()){}
+    QForeachContainer(const QForeachContainer &other)
+        : c(other.c), brk(other.brk), i(other.i), e(other.e) {}
     const T c;
     mutable int brk;
     mutable typename T::const_iterator i, e;
diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h
index 83801a20c5..5e354b3f41 100644
--- a/src/corelib/kernel/qmetatype.h
+++ b/src/corelib/kernel/qmetatype.h
@@ -771,9 +771,13 @@ struct VariantData
       , flags(flags_)
     {
     }
+    VariantData(const VariantData &other)
+        : metaTypeId(other.metaTypeId), data(other.data), flags(other.flags){}
     const int metaTypeId;
     const void *data;
     const uint flags;
+private:
+    VariantData &operator=(const VariantData &) Q_DECL_EQ_DELETE;
 };
 
 template<typename const_iterator>
diff --git a/src/corelib/kernel/qobject_impl.h b/src/corelib/kernel/qobject_impl.h
index d2996e6e4d..aea9d41c67 100644
--- a/src/corelib/kernel/qobject_impl.h
+++ b/src/corelib/kernel/qobject_impl.h
@@ -132,6 +132,8 @@ namespace QtPrivate {
         inline void call(QObject *r, void **a)  { m_impl(Call,    this, r, a, 0); }
     protected:
         ~QSlotObjectBase() {}
+    private:
+        Q_DISABLE_COPY(QSlotObjectBase)
     };
     // implementation of QSlotObjectBase for which the slot is a pointer to member function of a QObject
     // Args and R are the List of arguments and the returntype of the signal to which the slot is connected.
diff --git a/src/corelib/tools/qhash.h b/src/corelib/tools/qhash.h
index d4bf8df442..40e501355c 100644
--- a/src/corelib/tools/qhash.h
+++ b/src/corelib/tools/qhash.h
@@ -52,6 +52,12 @@
 #include <initializer_list>
 #endif
 
+#if defined(Q_CC_MSVC)
+#pragma warning( push )
+#pragma warning( disable : 4311 ) // disable pointer truncation warning
+#pragma warning( disable : 4127 ) // conditional expression is constant
+#endif
+
 QT_BEGIN_NAMESPACE
 
 class QBitArray;
@@ -99,18 +105,10 @@ Q_CORE_EXPORT uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
 Q_CORE_EXPORT uint qt_hash(const QString &key) Q_DECL_NOTHROW;
 Q_CORE_EXPORT uint qt_hash(const QStringRef &key) Q_DECL_NOTHROW;
 
-#if defined(Q_CC_MSVC)
-#pragma warning( push )
-#pragma warning( disable : 4311 ) // disable pointer truncation warning
-#endif
 template <class T> inline uint qHash(const T *key, uint seed = 0) Q_DECL_NOTHROW
 {
     return qHash(reinterpret_cast<quintptr>(key), seed);
 }
-#if defined(Q_CC_MSVC)
-#pragma warning( pop )
-#endif
-
 template<typename T> inline uint qHash(const T &t, uint seed)
     Q_DECL_NOEXCEPT_EXPR(noexcept(qHash(t)))
 { return (qHash(t) ^ seed); }
@@ -218,6 +216,9 @@ struct QHashNode
     inline QHashNode(const Key &key0, const T &value0, uint hash, QHashNode *n)
         : next(n), h(hash), key(key0), value(value0) {}
     inline bool same_key(uint h0, const Key &key0) const { return h0 == h && key0 == key; }
+
+private:
+    Q_DISABLE_COPY(QHashNode)
 };
 
 template <class Key, class T>
@@ -228,6 +229,9 @@ struct QHashDummyNode
     const Key key;
 
     inline QHashDummyNode(const Key &key0, uint hash, QHashNode<Key, T> *n) : next(n), h(hash), key(key0) {}
+
+private:
+    Q_DISABLE_COPY(QHashDummyNode)
 };
 
 
@@ -1091,4 +1095,8 @@ Q_DECLARE_MUTABLE_ASSOCIATIVE_ITERATOR(Hash)
 
 QT_END_NAMESPACE
 
+#if defined(Q_CC_MSVC)
+#pragma warning( pop )
+#endif
+
 #endif // QHASH_H
diff --git a/src/corelib/tools/qlist.h b/src/corelib/tools/qlist.h
index 16f058b001..3a0d01aa8d 100644
--- a/src/corelib/tools/qlist.h
+++ b/src/corelib/tools/qlist.h
@@ -58,6 +58,11 @@
 #include <limits.h>
 #include <string.h>
 
+#ifdef Q_CC_MSVC
+#pragma warning( push )
+#pragma warning( disable : 4127 ) // "conditional expression is constant"
+#endif
+
 QT_BEGIN_NAMESPACE
 
 
@@ -937,4 +942,8 @@ Q_DECLARE_MUTABLE_SEQUENTIAL_ITERATOR(List)
 
 QT_END_NAMESPACE
 
+#ifdef Q_CC_MSVC
+#pragma warning( pop )
+#endif
+
 #endif // QLIST_H
diff --git a/src/corelib/tools/qmap.h b/src/corelib/tools/qmap.h
index db0cd6a2d6..487039ccfb 100644
--- a/src/corelib/tools/qmap.h
+++ b/src/corelib/tools/qmap.h
@@ -260,6 +260,11 @@ QMapNode<Key, T> *QMapNode<Key, T>::copy(QMapData<Key, T> *d) const
     return n;
 }
 
+#if defined(Q_CC_MSVC)
+#pragma warning( push )
+#pragma warning( disable : 4127 ) // conditional expression is constant
+#endif
+
 template <class Key, class T>
 void QMapNode<Key, T>::destroySubTree()
 {
@@ -275,6 +280,10 @@ void QMapNode<Key, T>::destroySubTree()
     }
 }
 
+#if defined(Q_CC_MSVC)
+#pragma warning( pop )
+#endif
+
 template <class Key, class T>
 void QMapData<Key, T>::deleteNode(QMapNode<Key, T> *z)
 {
diff --git a/src/corelib/tools/qstring.h b/src/corelib/tools/qstring.h
index 9063f59171..cf0726d831 100644
--- a/src/corelib/tools/qstring.h
+++ b/src/corelib/tools/qstring.h
@@ -870,6 +870,12 @@ inline QString QString::arg(const QString &a1, const QString &a2, const QString
 inline QString QString::section(QChar asep, int astart, int aend, SectionFlags aflags) const
 { return section(QString(asep), astart, aend, aflags); }
 
+#ifdef Q_CC_MSVC
+// "conditional expression is constant"
+#pragma warning(push)
+#pragma warning(disable : 4127)
+#endif
+
 inline int QString::toWCharArray(wchar_t *array) const
 {
     if (sizeof(wchar_t) == sizeof(QChar)) {
@@ -878,6 +884,11 @@ inline int QString::toWCharArray(wchar_t *array) const
     }
     return toUcs4_helper(d->data(), size(), reinterpret_cast<uint *>(array));
 }
+
+#ifdef Q_CC_MSVC
+#pragma warning(pop)
+#endif
+
 inline QString QString::fromWCharArray(const wchar_t *string, int size)
 {
     return sizeof(wchar_t) == sizeof(QChar) ? fromUtf16(reinterpret_cast<const ushort *>(string), size)
diff --git a/src/corelib/tools/qstringbuilder.h b/src/corelib/tools/qstringbuilder.h
index f0670999d7..befa40081c 100644
--- a/src/corelib/tools/qstringbuilder.h
+++ b/src/corelib/tools/qstringbuilder.h
@@ -143,12 +143,16 @@ class QStringBuilder <QString, QString> : public QStringBuilderBase<QStringBuild
 {
     public:
         QStringBuilder(const QString &a_, const QString &b_) : a(a_), b(b_) {}
+        QStringBuilder(const QStringBuilder &other) : a(other.a), b(other.b) {}
 
         operator QString() const
         { QString r(a); r += b; return r; }
 
         const QString &a;
         const QString &b;
+
+    private:
+        QStringBuilder &operator=(const QStringBuilder &) Q_DECL_EQ_DELETE;
 };
 
 template <>
@@ -156,12 +160,16 @@ class QStringBuilder <QByteArray, QByteArray> : public QStringBuilderBase<QStrin
 {
     public:
         QStringBuilder(const QByteArray &a_, const QByteArray &b_) : a(a_), b(b_) {}
+        QStringBuilder(const QStringBuilder &other) : a(other.a), b(other.b) {}
 
         operator QByteArray() const
         { QByteArray r(a); r += b; return r; }
 
         const QByteArray &a;
         const QByteArray &b;
+
+    private:
+        QStringBuilder &operator=(const QStringBuilder &) Q_DECL_EQ_DELETE;
 };
 
 
diff --git a/src/corelib/tools/qvector.h b/src/corelib/tools/qvector.h
index 075e8e83e8..b0be98c296 100644
--- a/src/corelib/tools/qvector.h
+++ b/src/corelib/tools/qvector.h
@@ -287,6 +287,11 @@ void QVector<T>::copyConstruct(const T *srcFrom, const T *srcTo, T *dstFrom)
     }
 }
 
+#if defined(Q_CC_MSVC)
+#pragma warning( push )
+#pragma warning( disable : 4127 ) // conditional expression is constant
+#endif
+
 template <typename T>
 void QVector<T>::destruct(T *from, T *to)
 {
@@ -297,6 +302,10 @@ void QVector<T>::destruct(T *from, T *to)
     }
 }
 
+#if defined(Q_CC_MSVC)
+#pragma warning( pop )
+#endif
+
 template <typename T>
 inline QVector<T>::QVector(const QVector<T> &v)
 {