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Newsgroups: comp.lang.ada
Subject: Re: GNAT Spitbol segmentation fault
From: Georg Bauhaus <bauhaus@futureapps.de>
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Date: Thu, 18 Jan 2007 15:32:12 +0100
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On Thu, 2007-01-18 at 13:33 +0100, Alex R. Mosteo wrote:
> Hello,
>=20
> before filing a bug report I'd like to hear your opinion to rule out a
> mistake on my part. I'm using the excellent Gnat.Spitbol.Patterns package
> to extract some patterns from large bodies of text. I'm doing it with thi=
s
> scheme:
>=20
> declare
>    Text   : aliased Vstring :=3D <initial text>;
>    Target : aliased Vstring;

An ad hoc: I ran into trouble when forgetting to initialize
unbounded strings to the null string. Nul in the case of Target,
I think.

>   =20
>    Patt   : constant Pattern :=3D Some_Patterns ** Target;
> begin
>    while Match (Text, Target, "") loop
                        Patt ?
>       --  This extracts a Target string and removes it from the text.
>       --  It doesn't matter if the surrounding text causes new aftermatch=
es.
>       Do_Something_With (Target);
>    end loop;
> end;


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