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Date:Mon Apr 14 23:47:28 1993 
Subject:Re: So you think you know Pop11? [quiz] 
From:Aaron Sloman 
Volume-ID:930415.01 

sfk@otter.hpl.hp.com (Steve Knight) writes:

> Date: 13 Apr 93 17:02:05 GMT
> Organization: Hewlett-Packard Laboratories, Bristol, UK.
>
> Here's a little test for Pop-11 language lawyers everywhere ....
>
> Before trying this out, guess whether "X" is a lexical or dynamic variable
> in the following example :-
>
>     define foo( X );
>         lconstant a = ( lvars X = 99.dup; );
>         isident( ident X ) =>
>     enddefine;

This version may be even more surprising, and may give a clue as
to what is happening in Steve's example:

    define foo2( X );
        lconstant a = ( X => lvars X = 99.dup; );
        isident( ident X ) =>
    enddefine;

    foo2(66);

> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> WARNING: this code seems to causes core dumps on my machine -- so make
>          sure your work is backed up before trying this.  I think this is
>          because of a local problem, but I've got no easy way of proving
>          that.

It worked OK for me in Poplog V14.2 on a SPARC server running SunOS,
and in Poplog V14.1 on a HP M68040 running HP-UX

Aaron
---
-- 
Aaron Sloman,
School of Computer Science, The University of Birmingham, B15 2TT, England
EMAIL   A.Sloman@cs.bham.ac.uk  OR A.Sloman@bham.ac.uk
Phone: +44-(0)21-414-3711       Fax:   +44-(0)21-414-4281