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Postings from February 2018
On Sun, Jan 28, 2018 at 01:03:57PM +0000, Zefram wrote:
> KES wrote:
> >When we tie scalar to 'MyObj' class the MyObj::TIESCALAR is called
> >but OP_ENTERSUB is not executed before that.
>
> Not a bug. There is no entersub op because the sub call is not being
> made from Perl code. There are many places in which subs get called by
> means other than explicit calls from Perl code. Any XS code can make
> a sub call, and we even have a whole documentation file advising XS
> programmers how to do that. It is not remotely viable to rely on sub
> calls being made only through Perl ops.
>
> >But still we can see OP_LEAVESUB for it
>
> The leavesub op isn't part of the call site, it's part of the called sub.
> Of course it only exists for a called Perl sub. You'll see the opposite
> pattern when calling an XS sub explicitly from Perl code: an entersub
> op at the call site, then no leavesub or any other op until control has
> returned to the call site and moved on to the next thing.
I agree that this ticket should be rejected.
--
"I do not resent criticism, even when, for the sake of emphasis,
it parts for the time with reality".
-- Winston Churchill, House of Commons, 22nd Jan 1941.
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