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39 lines
1.4 KiB
Diff
39 lines
1.4 KiB
Diff
diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h
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index e40cd85..ba68a01 100644
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--- a/src/corelib/kernel/qmetatype.h
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+++ b/src/corelib/kernel/qmetatype.h
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@@ -18,6 +18,7 @@
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#endif
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#include <QtCore/qscopeguard.h>
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+#include <type_traits>
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#include <array>
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#include <new>
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#include <vector>
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@@ -826,7 +829,13 @@
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struct IsGadgetHelper { enum { IsRealGadget = false, IsGadgetOrDerivedFrom = false }; };
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template<typename T>
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+#if defined(__clang__) && (__clang_major__ > 11)
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+ // Clang does not reject T::QtGadgetHelper as ambiguous if a class inherits from two QGADGETS
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+ // but is not a QGADGET itself
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+ struct IsGadgetHelper<T, std::void_t<typename T::QtGadgetHelper, decltype(&T::qt_check_for_QGADGET_macro)>>
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+#else
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struct IsGadgetHelper<T, typename T::QtGadgetHelper>
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+#endif
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{
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template <typename X>
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static char checkType(void (X::*)());
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@@ -841,7 +850,11 @@
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struct IsPointerToGadgetHelper { enum { IsRealGadget = false, IsGadgetOrDerivedFrom = false }; };
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template<typename T>
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+#if defined(__clang__) && (__clang_major__ > 11)
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+ struct IsPointerToGadgetHelper<T*, std::void_t<typename T::QtGadgetHelper, decltype(&T::qt_check_for_QGADGET_macro)>>
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+#else
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struct IsPointerToGadgetHelper<T*, typename T::QtGadgetHelper>
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+#endif
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{
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using BaseType = T;
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template <typename X>
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