I've discovered that ippiFloodFill_Range8Con_8u_C1IR function hangs on some images, e.g. for situation:
If needed I can send image on which function freezes.
This situation occurs even if I changed ROI or seedValue is different from newValue and different from diff1 and diff2 - so it looks like 'never ending loop'.
Please write what is status of this issue
We could not reproduce the problem here. If it works for you, could you attached your picture in the post? When you reply, at the end of the post, it has option on "Attachments", which can be used for adding your files.