[SPAM:##] [perl #126014] Too many repetitions with xx operator causes out of memory; should it work lazily? <[email protected]>

Tests in
https://github.com/perl6/roast/commit/b320464868d3b8da98c090ddc4b0d57604683e13

Closing

On 2018-03-10 11:25:06, [email protected] wrote:
> On Wed, 22 Feb 2017 03:59:05 -0800, elizabeth wrote:
> > > On 22 Feb 2017, at 12:41, [email protected] via RT <perl6-bugs-
> > > [email protected]> wrote:
> > > On Sat, 30 Apr 2016 03:42:00 -0700, [email protected] wrote:
> > >> OK, I said that it only segfaults on 32-bit systems, but I was
> > >> wrong.
> > >>
> > >> Code:
> > >> 42 xx (2 ** 62)
> > >>
> > >> Result:
> > >> Segmentation fault
> > >>
> > > This is patched in MoarVM HEAD just now and no longer SEGVs
> > > (reports
> > > the array is too long to allocate). So, no longer a SEGV bug.
> > >
> > > However, I'm a bit surprised that xx does not work lazily, and
> > > actually makes such a huge array up-front. Not sure if we want to
> > > re-
> > > purpose the ticket for that; I'll remove the SEGV from the title,
> > > however, since that is resolved.
> >
> > Ah, yes, I remember we discussed this. I’ll make it a Seq, although
> > the question then becomes: should it be lazy or not? If it is not
> > lazy, we would just be postponing the exception in some cases.
> >
> >
> > Liz
>
> Fixed with commit
>
https://github.com/rakudo/rakudo/commit/1eb7b1f796214870b53c7ed055907cb29076dc78