QtGui: make all Q_DECLARE_SHARED types nothrow move-assignable

Excepting QBitmap and the QTextFormat heirarchy, which don't
have 100% value semantics (still pondering them).

In QPolygon(F), adding the move assignment operator disables
the implicitly-defined copy assignment operator, which therefore
have to be made user-defined. That doesn't change the ABI of
the class, since the base class QVector already had a user-defined
copy assignment operator.

Change-Id: I0b111c1d21cf47f559ada6357c982e3dc26aca68
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/src/gui/text/qrawfont.h b/src/gui/text/qrawfont.h
index 3798555de5..d710658a9b 100644
--- a/src/gui/text/qrawfont.h
+++ b/src/gui/text/qrawfont.h
@@ -72,13 +72,15 @@ public:
              qreal pixelSize,
              QFont::HintingPreference hintingPreference = QFont::PreferDefaultHinting);
     QRawFont(const QRawFont &other);
+#ifdef Q_COMPILER_RVALUE_REFS
+    QRawFont &operator=(QRawFont &&other) Q_DECL_NOTHROW { swap(other); return *this; }
+#endif
+    QRawFont &operator=(const QRawFont &other);
     ~QRawFont();
 
-    bool isValid() const;
+    void swap(QRawFont &other) Q_DECL_NOTHROW { qSwap(d, other.d); }
 
-    QRawFont &operator=(const QRawFont &other);
-
-    void swap(QRawFont &other) { qSwap(d, other.d); }
+    bool isValid() const;
 
     bool operator==(const QRawFont &other) const;
     inline bool operator!=(const QRawFont &other) const