4 files changed, 6 insertions, 22 deletions
diff --git a/src/corelib/global/qisenum.h b/src/corelib/global/qisenum.h
index 185db5e45f..8f784ef6e3 100644
--- a/src/corelib/global/qisenum.h
+++ b/src/corelib/global/qisenum.h
@@ -42,21 +42,8 @@
 #ifndef QISENUM_H
 #define QISENUM_H
 
-#ifndef Q_IS_ENUM
-#  if defined(Q_CC_GNU) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
-#    define Q_IS_ENUM(x) __is_enum(x)
-#  elif defined(Q_CC_MSVC) && defined(_MSC_FULL_VER) && (_MSC_FULL_VER >=140050215)
-#    define Q_IS_ENUM(x) __is_enum(x)
-#  elif defined(Q_CC_CLANG)
-#    if __has_extension(is_enum)
-#      define Q_IS_ENUM(x) __is_enum(x)
-#    endif
-#  endif
-#endif
-
-#ifndef Q_IS_ENUM
-#  define Q_IS_ENUM(x) std::is_enum<x>::value
-#endif
+// Use of Q_IS_ENUM is deprecated since 5.8
+#define Q_IS_ENUM(x) std::is_enum<x>::value
 
 // shut up syncqt
 QT_BEGIN_NAMESPACE
diff --git a/src/corelib/global/qtypeinfo.h b/src/corelib/global/qtypeinfo.h
index cdc85ab1d0..8aa5cb4fb4 100644
--- a/src/corelib/global/qtypeinfo.h
+++ b/src/corelib/global/qtypeinfo.h
@@ -38,13 +38,11 @@
 **
 ****************************************************************************/
 
-#include <QtCore/qisenum.h>
+#include <QtCore/qglobal.h>
 
 #ifndef QTYPEINFO_H
 #define QTYPEINFO_H
 
-#include <QtCore/qglobal.h>
-
 QT_BEGIN_NAMESPACE
 
 /*
@@ -64,7 +62,7 @@ public:
         isIntegral = std::is_integral<T>::value,
         isComplex = true,
         isStatic = true,
-        isRelocatable = Q_IS_ENUM(T),
+        isRelocatable = std::is_enum<T>::value,
         isLarge = (sizeof(T)>sizeof(void*)),
         isDummy = false, //### Qt6: remove
         sizeOf = sizeof(T)
diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h
index 29e60b0eb5..e64812b3ae 100644
--- a/src/corelib/kernel/qmetatype.h
+++ b/src/corelib/kernel/qmetatype.h
@@ -45,7 +45,6 @@
 #include <QtCore/qatomic.h>
 #include <QtCore/qbytearray.h>
 #include <QtCore/qvarlengtharray.h>
-#include <QtCore/qisenum.h>
 #ifndef QT_NO_QOBJECT
 #include <QtCore/qobjectdefs.h>
 #endif
@@ -1635,7 +1634,7 @@ namespace QtPrivate {
                      | (IsSharedPointerToTypeDerivedFromQObject<T>::Value ? QMetaType::SharedPointerToQObject : 0)
                      | (IsWeakPointerToTypeDerivedFromQObject<T>::Value ? QMetaType::WeakPointerToQObject : 0)
                      | (IsTrackingPointerToTypeDerivedFromQObject<T>::Value ? QMetaType::TrackingPointerToQObject : 0)
-                     | (Q_IS_ENUM(T) ? QMetaType::IsEnumeration : 0)
+                     | (std::is_enum<T>::value ? QMetaType::IsEnumeration : 0)
                      | (IsGadgetHelper<T>::Value ? QMetaType::IsGadget : 0)
              };
     };
diff --git a/src/corelib/kernel/qvariant_p.h b/src/corelib/kernel/qvariant_p.h
index ec87e20656..bf88def438 100644
--- a/src/corelib/kernel/qvariant_p.h
+++ b/src/corelib/kernel/qvariant_p.h
@@ -65,7 +65,7 @@ template<typename T>
 struct QVariantIntegrator
 {
     static const bool CanUseInternalSpace = sizeof(T) <= sizeof(QVariant::Private::Data)
-                                            && ((QTypeInfoQuery<T>::isRelocatable) || Q_IS_ENUM(T));
+            && ((QTypeInfoQuery<T>::isRelocatable) || std::is_enum<T>::value);
     typedef std::integral_constant<bool, CanUseInternalSpace> CanUseInternalSpace_t;
 };
 Q_STATIC_ASSERT(QVariantIntegrator<double>::CanUseInternalSpace);