De-inline dtors of public polymorphic classes

By making the destructor (usually the first non-inline, non-pure,
virtual function, and therefore the trigger for most compilers to
emit the vtable and type_info structures for the class in that TU)
out-of-line, vtables and, more importantly, type_info structures for
the class are pinned to a single TU. This prevents false negative
dynamic_cast and catch evaluation.

It also allows to add code to them later, if necessary.

Change-Id: I0da301cd788162abba6cdbbb21910090a22adb9a
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/render/frontend/qrendertarget.h b/src/render/frontend/qrendertarget.h
index a7bba422b..cb0edde51 100644
--- a/src/render/frontend/qrendertarget.h
+++ b/src/render/frontend/qrendertarget.h
@@ -55,6 +55,7 @@ class QT3DRENDERSHARED_EXPORT QRenderTarget : public Qt3DCore::QComponent
     Q_OBJECT
 public:
     explicit QRenderTarget(Qt3DCore::QNode *parent = nullptr);
+    ~QRenderTarget();
 
     void addOutput(QRenderTargetOutput *output);
     void removeOutput(QRenderTargetOutput *output);