I have found and fixed the bug for the next release.
Thanks for finding and reporting this error.
The error is in a calculation that involves the
vector length and the maximum value, to decide which
sort algorithm to use. The example you found has
the right combination to cause machine integer
overflow.
----- Original Message -----
From: Henry Rich <[EMAIL PROTECTED]>
Date: Friday, November 17, 2006 2:10 am
Subject: RE: [Jprogramming] Oddities with /:
> I get similar behavior. I had to change the vector length
> a little bit to get it to fail:
>
> $ /:~vec=.?998005$1993426-~2^31
> 998005
> $ /:~vec=.?1098005$1993426-~2^31
> |limit error
> | $ /:~vec=.?1098005$1993426-~2^31
>
> The error seems to have something to do with the data:
> $ /:~vec=.?1098005$1993426-~2^30
> 1098005
>
> or even
>
> $ /:~vec=.?2098005$1993426-~2^30
> 2098005
>
> Henry Rich
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [EMAIL PROTECTED] On Behalf Of Roger Hui
> > Sent: Friday, November 17, 2006 1:56 AM
> > To: Programming forum
> > Subject: Re: [Jprogramming] Oddities with /:
> >
> > I can not reproduce the error in J601b. Did you
> > generate your examples in a brand new session?
> >
> >
> >
> > ----- Original Message -----
> > From: Devon McCormick <[EMAIL PROTECTED]>
> > Date: Thursday, November 16, 2006 6:49 pm
> > Subject: [Jprogramming] Oddities with /:
> >
> > > The numbers below are right on the edge of failure.
> > >
> > > $ /:~vec=.?998005$1993426-~2^31 NB. This fails;
> > > |limit error
> > > | $ /:~vec=.?998005$1993426-~2^31
> > >
> > > $ /:~vec=.?998005$1993427-~2^31 NB. but this (1 less) is OK;
> > > 998005
> > >
> > > $ /:~vec=.?998006$1993427-~2^31 NB. but this (1 more
> element)
> > > fails.|limit error
> > > | $ /:~vec=.?998006$1993427-~2^31
> > >
> > > $vec{~/:vec NB. However, this is
> > > equivalent to the
> > > above.
> > > 998006
> > >
> > > (9!:12 '');9!:14 ''
> > > +-+---------------------+
> > > |6|j601/2006-09-04/09:20|
> > > +-+---------------------+
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