[Development] Qt 5: Warning using QImage as QtConcurrent::mapped return type

[Stephen Chu]

The following code generates warning about memcpy on object type:

     QList<QImage> images;
     QList<QImage> future = QtConcurrent::blockingMapped(images, scaled);

The warning:

In file included from /Qt/5.0/qtbase/include/QtCore/qvector.h:1:
/Qt/5.0/qtbase/include/QtCore/../../src/corelib/tools/qvector.h:459:56: 
warning: source of this 'memcpy' call is a pointer to dynamic class 
'QImage'; vtable pointer will be copied [-Wdynamic-class-memaccess]
                     ::memcpy(static_cast<void *>(dst), srcBegin, 
(srcEnd - srcBegin) * sizeof(T));
                     ~~~~~~~~                           ^

It seems that Qt thinks QImage is a POD type?