From: michael@ifr16.luftfahrt.uni-stuttgart.de (Michael Paus)
Subject: Re: Address to function pointer conversion
Date: 1997/06/25
Date: 1997-06-25T00:00:00+00:00 [thread overview]
Message-ID: <5oqonh$vt6@info4.rus.uni-stuttgart.de> (raw)
In-Reply-To: dewar.867185277@merv
In <dewar.867185277@merv> Robert Dewar wrote:
> Matthew Heaney asks
>
> <<I'm confused by this answer. Do you mean
>
> If it is accepted, then it is guaranteed to work.
>
> or do you mean
>
> Robert replies
>
> The trouble is that "works" here is not well defined, it depends on exactly
> what you are doing, for example, if the C program you call raises a signal,
> what happens? Not clear. So likely to work is indeed a reasonable way of
> saying, on an informal basis, that, based on a best guess of what you
> might expect to work, it will work. Other things that might cause trouble
> are varargs for example.
>
So, what you say here is that if the pragma is accepted the program is
guaranteed to work exactly as reliable as any other program which
directly interfaces to some C function because the potential problems
you have mentioned will always make an Ada program which interfaces
to a foreign language somewhat less reliable than a pure Ada program.
I think everybody knows this and nobody will expect more.
Michael
next prev parent reply other threads:[~1997-06-25 0:00 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-06-13 0:00 Address to function pointer conversion Michael Paus
1997-06-13 0:00 ` Samuel Mize
1997-06-14 0:00 ` Robert Dewar
1997-06-13 0:00 ` John G. Volan
1997-06-14 0:00 ` Robert Dewar
1997-06-17 0:00 ` John G. Volan
1997-06-20 0:00 ` Robert Dewar
1997-06-24 0:00 ` Matthew Heaney
1997-06-24 0:00 ` Robert Dewar
1997-06-25 0:00 ` Michael Paus [this message]
1997-06-14 0:00 ` Robert Dewar
1997-06-16 0:00 ` Michael Paus
1997-06-16 0:00 ` Robert Dewar
1997-06-16 0:00 ` Samuel Mize
1997-06-16 0:00 ` Robert A Duff
1997-06-17 0:00 ` Robert Dewar
1997-06-17 0:00 ` Samuel Mize
1997-06-20 0:00 ` Robert Dewar
1997-06-20 0:00 ` Robert Dewar
1997-06-16 0:00 ` Robert A Duff
1997-06-14 0:00 ` Robert A Duff
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