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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Weird Bug in Get_Line
Date: Wed, 26 Apr 2017 11:58:54 +0100
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Date: 2017-04-26T11:58:54+01:00
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Brian Kolden <bakolden5@gmail.com> writes:

> I came across an interesting issue in the Get_Line function. When
> piping in a file (using the linux cammand '<') GNAT "raises
> ADA.IO_EXCEPTIONS.END_ERROR : a-tigeli.adb:96".
>
> However, the interesting issue is this only happens for a very small
> number of line lengths. I've noticed the exception is only thrown on
> lines with length 500, 501, 1000, 1001. Lines bigger or smaller don't
> seem to raise the issue, even other multiples of 500. This only is
> effected when using a file as input, copying and pasting the line into
> the terminal does not seem to trigger it.
>
> So, is this an GNAT issue or an OS issue?

A GNAT issue, most likely.

Check out http://blog.adacore.com/formal-verification-of-legacy-code