diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/corelib/tools/qsharedpointer_impl.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/corelib/tools/qsharedpointer_impl.h b/src/corelib/tools/qsharedpointer_impl.h index a9c6babbf58..5dfc4614f91 100644 --- a/src/corelib/tools/qsharedpointer_impl.h +++ b/src/corelib/tools/qsharedpointer_impl.h @@ -28,6 +28,7 @@ QT_END_NAMESPACE #include <QtCore/qatomic.h> #include <QtCore/qhashfunctions.h> #include <QtCore/qmetatype.h> // for IsPointerToTypeDerivedFromQObject +#include <QtCore/qxptype_traits.h> #include <memory> @@ -537,6 +538,12 @@ class QWeakPointer template <typename X> using IfCompatible = typename std::enable_if<std::is_convertible<X*, T*>::value, bool>::type; + template <typename X> + using IfVirtualBase = typename std::enable_if<qxp::is_virtual_base_of_v<T, X>, bool>::type; + + template <typename X> + using IfNotVirtualBase = typename std::enable_if<!qxp::is_virtual_base_of_v<T, X>, bool>::type; + public: typedef T element_type; typedef T value_type; @@ -566,7 +573,15 @@ public: } QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_MOVE_AND_SWAP(QWeakPointer) - template <class X, IfCompatible<X> = true> + template <class X, IfCompatible<X> = true, IfNotVirtualBase<X> = true> + Q_NODISCARD_CTOR + QWeakPointer(QWeakPointer<X> &&other) noexcept + : d(std::exchange(other.d, nullptr)), + value(std::exchange(other.value, nullptr)) + { + } + + template <class X, IfCompatible<X> = true, IfVirtualBase<X> = true> Q_NODISCARD_CTOR QWeakPointer(QWeakPointer<X> &&other) noexcept : d(other.d), value(other.toStrongRef().get()) // must go through QSharedPointer, see below |