[AD] crash.. destroy_bitmap( a system bitmap );

[aj <aj@xxxxxxxxxx>]

msvc7.0
winxp
alg ver: 4.1.11 (WIP)
alg date: 20030630



destroy_bitmap()   crashes  when  its a system bitmap; and you have 
returned to text mode.. ie set_gfx_mode(TEXT)
the  gfx_driver  ptr is NULL.

if normal procedure is to destroy system bitmaps before returning to text 
mode,  can that be documented somewhere near the

\allegro\docs\html\alleg009.html#destroy_bitmap

current text says "Destroys a memory bitmap, sub-bitmap, video memory 
bitmap, or system bitmap when you are finished with it. "

maybe changed to "Destroys a memory bitmap, sub-bitmap, video memory 
bitmap, or system bitmap when you are finished with it, system bitmaps must 
be destroyed before changing screen driver."


aj.