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From: "Alex R. Mosteo" <devnull@mailinator.com>
Newsgroups: comp.lang.ada
Subject: Re: GNAT Spitbol segmentation fault
Date: Thu, 18 Jan 2007 18:00:25 +0100
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Date: 2007-01-18T18:00:25+01:00
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Georg Bauhaus wrote:

> On Thu, 2007-01-18 at 13:33 +0100, Alex R. Mosteo wrote:
>> Hello,
>> 
>> 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
>> this scheme:
>> 
>> declare
>>    Text   : aliased Vstring := <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.

Thanks, I'll add it.

> 
>>    
>>    Patt   : constant Pattern := Some_Patterns ** Target;
>> begin
>>    while Match (Text, Target, "") loop
>                         Patt ?

Of course you're right.

>>       --  This extracts a Target string and removes it from the text.
>>       --  It doesn't matter if the surrounding text causes new
>>       aftermatches. Do_Something_With (Target);
>>    end loop;
>> end;