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Don't redefine dynamic_cast if it's already a macro 

Redefining macros is always a bad idea. On top of that, MSVC doesn't
like when we #define dynamic_cast, even though the C++ standard
explicitly allows it.

Task-number: QTBUG-29093
Change-Id: I6e33d609ce213cf6a9085faa3f991a873d825dc6
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
bb10
Thiago Macieira 2014-04-07 13:49:17 -07:00 committed by The Qt Project
parent b81898f1db
commit c33849d0cb
1 changed files with 1 additions and 1 deletions
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2
src/corelib/global/qglobal.h
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@ -980,7 +980,7 @@ Q_CORE_EXPORT QString qtTrId(const char *id, int n = -1);
dynamic_cast to cause a compile failure.
*/
#ifdef QT_NO_DYNAMIC_CAST
#if defined(QT_NO_DYNAMIC_CAST) && !defined(dynamic_cast)
# define dynamic_cast QT_PREPEND_NAMESPACE(qt_dynamic_cast_check)
template<typename T, typename X>