large arrays

["Joel Lepinoux" <Joel.Lepinoux@ltpcm.inpg.fr>]

Hello,
for the first time I need to declare a large array (>1Go), here are my
structures:


  type Site         is array (1..3) of Short_Short_Integer; -- size=24 bits
  type Site_Matrix  is array (Integer range <>, Integer range <>) of Site;

-- maximum allowed size, about 245Mo
  My_Array: Site_Matrix(1..1_132_000,1..72);


If I increase the first upper bound (1_132_000) I get a warning from gnat
(3.15p) comfirmed at runtime: STORAGE_ERROR: object too large

This means that "My_Array" is too large but of course I can declare a
second array of same dimensions and so one, i.e. it is not a problem of
total space (2Go available) neither of bound out of range, etc.

I would be glad to understand the origin of this limit and it would be
great if somebody could tell me how to extend it.
Thanks in advance
Joel