Win 10 64, AMD HD 5850, i5 3.2 ghz, 12 GB ram
2.79 and master
Short description of error
Going to the UV image editor and creating a new blank texture of 16384x16384 eats all my 12 GB memory and then starts to kill the machine with the swap file, had to turn machine of after 22gb of swap file shown and total unresponsive windows.
This has to be a bug (sounds like memory leak but hey have no idea) or something isnt right, a 16K by 16k 32 bit float generated texture from UV image editor should not take well over 12GB memory. For really good texture bakes I need to be able to bake upto 16K textures.
Exact steps for others to reproduce the error
goto image editor, Generate new texture, 16384x16384, turn of alpha, turn on 32 bit float. create the blank image. Memory goes to 12 gb usage.