> -----Original Message-----
> From: IBM Mainframe Assembler List [mailto:ASSEMBLER-
> l...@listserv.uga.edu] On Behalf Of Rob van der Heij
> Sent: 02 February 2018 14:42
> Subject: Re: Pascal
> On 2 February 2018 at 14:28, Martin Ward <mar...@gkc.org.uk> wrote:
> >
> > Incidentally, perl strings can be over 4GB in length: in fact, any
> > size which will will fit in memory (including swap space).
> >
> Just don't let the ASN.1 folks come closer, or you end up with variable length
> length fields... ;-)
> I would think that when things get long enough, the requirement for
> consecutive storage of the characters would be restrictive. Implementing a
> string as a series of (address,length) pairs would solve that, and would also
> make for elegant string concatenation.
> Considering that most strings are less than 4GB, I would be tempted to
> maybe use negative length to imply the extra indirection, and use positive
> length for characters following the length. If functions return such strings,
> you'd need a garbage collector as well... sigh.

I once implemented some one else's portable asn.1 encoder/decoder on VM/CMS. It 
was written in in Fortran 77 because we had that available but did not have 
As we wanted a portable ASN.1 encoder/decoder and it was for UK Universities, 
all of whom had FORTRAN 77 then Fortran 77 was the best (or indeed only 
possible) language for the project....

> Rob


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