From: aschwarz@acm.org (skidmarks)
Subject: Re: Ada Pointer Size Problem
Date: 12 Oct 2004 11:44:10 -0700
Date: 2004-10-12T11:44:10-07:00 [thread overview]
Message-ID: <35f054ea.0410121044.bf19fea@posting.google.com> (raw)
In-Reply-To: mailman.269.1097458704.390.comp.lang.ada@ada-france.org
Stephen Leake <stephen_leake@acm.org> wrote in message news:<mailman.269.1097458704.390.comp.lang.ada@ada-france.org>...
> aschwarz@acm.org (skidmarks) writes:
> > I've looked at the 'info' tex file included with the
> > gcc distribution and so far have not found how to
> > change a 64-bit pointer to a 32-bit pointer.
>
> Why do you want to do that? A pointer to an integer is not a pointer
> to a string.
I misspoke, perhaps sarcastically. I don't want to change pointer sizes
and you have gone far to explain what I'm seeing. Although the reason
for including the dope vector as part of an Access Type eludes me, the
explanation I understand. (The elusion is because it seems just as
reasonable to 'point' to a dope vector when specifying an access type
rather than including the dope vector as the Access Type.) Albeit,
thanks to all for the clarification between System.Address and Access
Type.
>
> > I've thought that maybe I am getting the dope vector size associated
> > with the String_Ptr but this really doesn't make sense.
>
See above. To resolve this (type of) difficulty locally - for Ada83
interfaces to C primarily, we do the following:
A_Access := array'Access
B_Pointer := array(array'First)'Address
and for the purists, THIS IS NOT TRUE ADA, so don't flame me because
it's not true Ada.
> Why doesn't that make sense?
>
> > The Integer_Ptr is only 32-bits which seems to be correct but both
> > pointers should be the same.
>
> Why?
See above.
And to all, thanks. You have clarified the issues.
art
next prev parent reply other threads:[~2004-10-12 18:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-10 19:50 Ada Pointer Size Problem skidmarks
2004-10-11 1:38 ` Stephen Leake
2004-10-12 18:44 ` skidmarks [this message]
2004-10-13 1:23 ` Jeffrey Carter
2004-10-13 8:07 ` Martin Krischik
2004-10-13 16:27 ` Jean-Pierre Rosen
2004-10-11 5:18 ` Jeffrey Carter
2004-10-21 1:16 ` Dave Thompson
2004-10-21 1:56 ` Jeffrey Carter
2004-10-21 9:54 ` Martin Krischik
2004-10-22 1:09 ` Jeffrey Carter
2004-10-22 7:48 ` Martin Krischik
2004-10-22 9:41 ` Adrien Plisson
2004-10-22 16:50 ` Warren W. Gay VE3WWG
2004-10-24 16:05 ` Martin Krischik
2004-10-23 1:35 ` Jeffrey Carter
2004-10-24 15:52 ` Martin Krischik
2004-10-22 5:41 ` Simon Wright
2004-10-22 18:05 ` Mark Lorenzen
2004-11-01 8:14 ` Dave Thompson
2004-10-11 8:45 ` Martin Krischik
[not found] ` <1c2f5137.0410130505.57e03c@posting.google.com>
2004-10-13 13:37 ` Dmitry A. Kazakov
2004-10-14 3:46 ` Steve
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