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修改 Qt5.0.1/5.0.1/clang_64/include/QtCore/qisenum.h 如下：

     42#include <QtCore/qglobal.h>
     43 
     44 #ifndef QISENUM_H
     45 #define QISENUM_H
     46 
     47 #ifndef Q_IS_ENUM   
     48 #  if defined(Q_CC_GNU) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) 
     49 #    define Q_IS_ENUM(x) __is_enum(x)   
     50 #  elif defined(Q_CC_MSVC) && defined(_MSC_FULL_VER) && (_MSC_FULL_VER >=140050215) 
     51 #    define Q_IS_ENUM(x) __is_enum(x)   
     52 #  else
     53 #    include <QtCore/qtypetraits.h> 
     54 #    define Q_IS_ENUM(x) QtPrivate::is_enum<x>::value   
     55 #  endif    
     56 #endif