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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Use aggregates (Was: Allocation question)
Date: Wed, 13 May 2009 15:38:27 -0500
Organization: Jacob Sparre Andersen
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Date: 2009-05-13T15:38:27-05:00
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>"Martin" <martin.dowie@btopenworld.com> wrote in message 
>news:7b4408e9-386d-471b-aad5-9d26dde12682@v17g2000vbb.googlegroups.com...
>On May 12, 10:18 pm, "Randy Brukardt" <ra...@rrsoftware.com> wrote:
>> "Martin" <martin.do...@btopenworld.com> wrote in message
>>
>> news:26af755b-0b90-429f-a688-86bf307da2b5@o20g2000vbh.googlegroups.com...
>>
>> >> This is not always a good idea. On some targets, GNAT places the
>> >> aggregate on the stack and this can raise a Storage_Error. In avionics
>> >> programs, I remember replacing aggregates with loops for this reason.
>>
>> >And not just GNAT...in fact, I'm struggling to remember a compiler
>> >that _doesn't_ do the "large and slow (and stupid?)" aggregate for
>> >assignment (or initialisation).
>>
>> You must have not used many Ada compilers.
>
>The current count is 7 (for my day job) + 3 (for home work).

Fascinating. I'd be interested in seeing an example where you are seeing 
compilers that are doing "large and slow" aggregate initialization or 
assignment, because I have to think we are talking about different things.

                         Randy.