From 75af24a2d121ab56c5b60524bf1d7f2af1613025 Mon Sep 17 00:00:00 2001
From: Olivier Goffart <ogoffart@woboq.com>
Date: Sat, 23 May 2015 14:04:09 +0200
Subject: QMetaType: Do not automatically register types that derives from a
 Q_GADGET

Otherwise the type is registered with the wrong name

Change-Id: I68ec3a05e2528816626e648b46ccc9d70b004866
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
---
 src/corelib/kernel/qmetatype.h   | 12 ++++++++----
 src/corelib/kernel/qobjectdefs.h |  1 +
 2 files changed, 9 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h
index b854dc16fd..9ad8702e79 100644
--- a/src/corelib/kernel/qmetatype.h
+++ b/src/corelib/kernel/qmetatype.h
@@ -1357,12 +1357,16 @@ namespace QtPrivate
         enum { Value = sizeof(checkType(static_cast<T*>(0))) == sizeof(yes_type) };
     };
 
+    template<typename T, typename Enable = void>
+    struct IsGadgetHelper { enum { Value = false }; };
+
     template<typename T>
-    struct IsGadgetHelper
+    struct IsGadgetHelper<T, typename T::QtGadgetHelper>
     {
-        template<typename X> static typename X::QtGadgetHelper *checkType(X*);
-        static char checkType(void*);
-        enum { Value = sizeof(checkType(static_cast<T*>(0))) == sizeof(void*)  };
+        template <typename X>
+        static char checkType(void (X::*)());
+        static void *checkType(void (T::*)());
+        enum { Value =  sizeof(checkType(&T::qt_check_for_QGADGET_macro)) == sizeof(void *) };
     };
 
 
diff --git a/src/corelib/kernel/qobjectdefs.h b/src/corelib/kernel/qobjectdefs.h
index 31e8a670e9..4d01264906 100644
--- a/src/corelib/kernel/qobjectdefs.h
+++ b/src/corelib/kernel/qobjectdefs.h
@@ -172,6 +172,7 @@ private: \
 #define Q_GADGET \
 public: \
     static const QMetaObject staticMetaObject; \
+    void qt_check_for_QGADGET_macro(); \
     typedef void QtGadgetHelper; \
 private: \
     Q_DECL_HIDDEN_STATIC_METACALL static void qt_static_metacall(QObject *, QMetaObject::Call, int, void **);
-- 
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