QVERIFY_EXCEPTION_THROWN does not work with a temporary

While calling a member function that throws is correctly tested,
QVERIFY_EXCEPTION_THROWN(object.methodThrowing(), std::runtime_error);

verifying that a constructor fails is not possible as such
QVERIFY_EXCEPTION_THROWN(ObjectConstructorThrowing(), std::runtime_error);

It appears the latter is optimised out in release mode. Should the macro expression be wrapped in a Q_UNUSED?