QBitArray: apply Rule Of Zero

Can't do it now, because this non-polymorphic class is exported
wholesale, so removing the SMFs would be BiC. But pre-program for
Qt 7, so we don't forget again.

Change-Id: I36420dbaeda53391d304cf6832167f6157c22e35
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/corelib/tools/qbitarray.cpp

@@ -77,6 +77,7 @@ QT_BEGIN_NAMESPACE
     \sa QByteArray, QList
 */
 
+#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
 /*!
     \fn QBitArray::QBitArray(QBitArray &&other)
 
@@ -85,6 +86,7 @@ QT_BEGIN_NAMESPACE
 
     \since 5.2
 */
+#endif
 
 /*! \fn QBitArray::QBitArray()
 
@@ -467,6 +469,7 @@ quint32 QBitArray::toUInt32(QSysInfo::Endian endianness, bool *ok) const noexcep
     \overload
 */
 
+#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
 /*! \fn QBitArray::QBitArray(const QBitArray &other) noexcept
 
     Constructs a copy of \a other.
@@ -491,6 +494,7 @@ quint32 QBitArray::toUInt32(QSysInfo::Endian endianness, bool *ok) const noexcep
     Moves \a other to this bit array and returns a reference to
     this bit array.
 */
+#endif // Qt 6
 
 /*! \fn void QBitArray::swap(QBitArray &other)
     \since 4.8

src/corelib/tools/qbitarray.h

@@ -63,10 +63,13 @@ class Q_CORE_EXPORT QBitArray
 public:
     inline QBitArray() noexcept {}
     explicit QBitArray(qsizetype size, bool val = false);
+    // Rule Of Zero applies
+#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
     QBitArray(const QBitArray &other) noexcept : d(other.d) {}
     inline QBitArray &operator=(const QBitArray &other) noexcept { d = other.d; return *this; }
     inline QBitArray(QBitArray &&other) noexcept : d(std::move(other.d)) {}
     QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_PURE_SWAP(QBitArray)
+#endif // Qt 6
 
     void swap(QBitArray &other) noexcept { d.swap(other.d); }