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From: Scott Ingram <scott@silver.jhuapl.edu>
Subject: Re: Raising IO_EXCEPTIONS.END_ERROR in a loop
Date: 1997/11/19
Message-ID: <34731EB4.19661F3C@silver.jhuapl.edu>#1/1
X-Deja-AN: 290769126
References: <3472EEAE.65B43D71@silver.jhuapl.edu>
 <347302AE.7DFF@gsfc.nasa.gov>
Organization: Johns Hopkins University Applied Physics Laboratory
Newsgroups: comp.lang.ada
Date: 1997-11-19T00:00:00+00:00
List-Id: <comp.lang.ada>


Stephen Leake wrote:
> 
> Scott Ingram wrote:
> >
> > The following fragment compiles, and even runs correctly through
> > one iteration but blows up when re-reading a string from standard
(extra lines snipped)
> 
> You need to be more precise about what happens - "blows up" is not
> something my computer does very often :). Does it raise an exception?
> crash your OS? Are you running on Windows or some other OS? You are
> using Get_Immediate, which is (unfortunately), system-dependent. What
> compiler are you using?
>

Sorry, thought that "Raising IO_EXCEPTIONS.END_ERROR ..." as a subject
line was specific enough to elucidate how it was blowing up :-)
Also, I realize that Get_Immediate is system dependent:  but I didn't
realize HOW dependent, since I have only been using in a loop as
illustrated when I wanted to hand feed some value in.  Up until now,
it appeared to behave the same way (for my purposes) on several
varieties
of Unix (including Linux.)

> Jumping way out on a limb, I assume you have the same system I do
> (Windows 95, GNAT 3.09) (yes, I'll upgrade to GNAT 3.10 one of these
> days; I was holding out for an ada-aware debugger :( ). I compiled and
> ran your code, after adding the missing declarations. It works fine,
> except on this system Get_Immediate doesn't return until the user hits
> <return>, so you need to add Skip_Line.
> 
> Hope this helps.
(more stuff snipped)

Yes, it does.  I didn't think to try it on a sufficiently different
system
than the two where the problem showed up!  Thanks.


> --
> - Stephe

-- 
Scott Ingram
Sonar Processing and Analysis Laboratory
Johns Hopkins University Applied Physics Laboratory