Re: gdiplus: Add a test to show that GdipCloneImage is not supposed to increase refcount of the source image stream, but clone it instead.

[Vincent Povirk]

I think it's most likely not keeping the input stream in the new image at all.

It's probably also worth testing SelectActiveFrame, GetPropertyItem,
and GetImageRawFormat with clones of images. Maybe they don't work.

gdiplus: Add a test to show that GdipCloneImage is not supposed to increase refcount of the source image stream, but clone it instead.

[Dmitry Timoshkov]

Vincent Povirk  wrote:
> I think it's most likely not keeping the input stream in the new image at all.
>
> It's probably also worth testing SelectActiveFrame, GetPropertyItem,
> and GetImageRawFormat with clones of images. Maybe they don't work.

A quick test shows that SelectActiveFrame called on a clone of a multiframe
gif image succeeds under nt4 and win2k, but fails under all later gdiplus
implementations. Looks like a clone does not really clone anything.