id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
9020,kth_channel_view fails when used with virtual views,Shaun Marko <smarko@…>,Stefan Seefeld,"Given an image_view with a virtual_2d_locator that returns a planar_pixel_reference, kth_channel_view produces a kth_channel_deref_fn with an incorrect result_type which may result an invalid pointer dereference.

For example, consider a virtual_2d_locator instantiated with a dereference functor that returns a 'planar_pixel_reference<bits8&, rgb_t>'

An image_view instantiated with such a locator will have a reference type of 'planar_pixel_reference<bits8&,rgb_t>'. Now suppose this image_view is passed to kth_channel_view(). This results in the instantiation of a kth_channel_deref_fn with a result_type of 'pixel<bits8&, gray_layout_t>&'; however, the deref functor will initialize this result_type with a pixel<bits8,gray_layout_t>&'.

detail::kth_channel_deref_fn needs to ensure the channel type of its result_type is not a reference type.",Bugs,closed,To Be Determined,gil USE GITHUB,Boost 1.52.0,Problem,duplicate,kth_channel_view virtual_2d_locator,mateusz@…