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From: "Matthew Heaney" <mheaney@on2.com>
Newsgroups: comp.lang.ada
Subject: Re: Compiler default initialization of array types
Date: Thu, 17 Oct 2002 09:42:24 -0400
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Date: 2002-10-17T09:42:24-04:00
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"Sebastian" <sebastian.madunic@avionics.saab.se> wrote in message
news:aombha$ong$1@newstoo.ericsson.se...
> I wonder if Ada always assignes Array types with default values?

Only if the component subtype is default initialized.  Otherwise no.

For example:

declare
   S : String (1 ..10);
begin

The array S is NOT initialized.

However, if we have this:

type String_Access_Array is
    array (Positive range <>) of Ada.Strings.Unbounded.String_Access;

declare
   S  : String_Access_Array (1 .. 10);
begin

Then here array S IS initialized.

> In case this is true; is there some way to suppress this feature?

As someone already pointed out, you might be able to use pragma Import (Ada,
<array object>) to suppress the initialization, but I haven't tried this
with an array object.  Another possibility is to turn off
default-initialization of the array component subtype.  Is there a pragma to
do this?  I forget.

However, if the array component subtype is controlled, I don't think there's
any way to turn of controlled initialization.  But I wouldn't think you'd
want to, either.

Is the array component subtype scalar?

Perhaps we could help you more if you provided the declarations of the array
component subtype and array subtype.