From ad9726d99c327545aa908856d248198bfeb9bca2 Mon Sep 17 00:00:00 2001
From: Sean Harmer <sean.harmer@kdab.com>
Date: Fri, 11 Mar 2016 11:50:50 +0000
Subject: Dedupe QMetaObject::cast

By implementing in terms of QMetaObject::inherits().

Change-Id: I39a039539b05a20bc1713bd450d8a998c78433aa
Reviewed-by: Milian Wolff <milian.wolff@kdab.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
---
 src/corelib/kernel/qmetaobject.cpp | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

(limited to 'src/corelib')

diff --git a/src/corelib/kernel/qmetaobject.cpp b/src/corelib/kernel/qmetaobject.cpp
index 8024c97373..4f764e7e78 100644
--- a/src/corelib/kernel/qmetaobject.cpp
+++ b/src/corelib/kernel/qmetaobject.cpp
@@ -363,14 +363,7 @@ QObject *QMetaObject::cast(QObject *obj) const
 */
 const QObject *QMetaObject::cast(const QObject *obj) const
 {
-    if (obj) {
-        const QMetaObject *m = obj->metaObject();
-        do {
-            if (m == this)
-                return obj;
-        } while ((m = m->d.superdata));
-    }
-    return 0;
+    return (obj && obj->metaObject()->inherits(this)) ? obj : nullptr;
 }
 
 #ifndef QT_NO_TRANSLATION
-- 
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