Re: GNAT's stack checking in Ubuntu 9.04 (and Shootout regex-dna)

[Georg Bauhaus <rm.dash-bauhaus@futureapps.de>]

Brian Drummond schrieb:

>>    declare
>> -      Sequence_Lines : Dna_Lines(1..Num_Lines);
>> +      type Dna_Lines_Pointer is access Dna_Lines;  -- avoids stack issues
>> +     -- Sequence_Lines : Dna_Lines_Pointer := new Dna_Lines(1..Num_Lines);
>        Sequence_Lines_ptr : Dna_Lines_Pointer := new Dna_Lines(1..Num_Lines);
>        Sequence_Lines : Dna_Lines(1..Num_Lines) renames Sequence_Lines_ptr.all;
> 
> and now no changes are necessary to the program (which may access the variable
> many times)
> 
>>      Put(Item => Length(Sequence_Lines), Width => 1);

Cool... I had already felt comfortable with .all being optional
when there are parens or tick marks, but this one's nice. Thanks.