On Wed, Aug 31, 2016 at 02:58:50AM -0700, jn...@jnthn.net via RT wrote:
> On Sun Aug 28 20:09:29 2016, c...@zoffix.com wrote:
> > On occasion, I get this error when trying to run the bellow program on
> > a 32-core box:
> >
> > $ time RAKUDO_MAX_THREADS=40 perl6 foo.p6
> > Cannot invoke this object (REPR: Null; VMNull)
> > in block <unit> at foo.p6 line 9
> I've fiddled with it a bit, but had trouble getting this to blow on my
> much-less-core-endowed box. Guess I can leave it running in a loop while I
> take lunch or something... :-)
"my" machine has almost as many cores. I can get it to bomb at times.
(ASAN makes no comment)
> Any chance you could:
>
> 1) Run it with `--ll-exception`
> 2) Stick a CATCH block in the sub that does `.backtrace.full.say` or similar,
> to see if we get any more details output there
You mean like this?
sub what-is {
CATCH { .backtrace.full.say }
return $^num.is-prime ?? "$num is prime" !! "$num is not prime";
}
my @results;
for 3¹²³⁴⁵ … 3¹²³⁴⁵+127 -> $n {
@results.push: start what-is $n;
}
print await @results;
I got this:
Cannot invoke this object (REPR: Null; VMNull)
in block <unit> at 129120.pl line 9
Line 9 is `print await @results;`
What do I need to do better, to get actual useful details?
Nicholas Clark
