[perl #120017] perlcall documentation has no good example with POPs

On Fri Sep 27 03:34:02 2013, LeonT wrote:
> On Thu Sep 26 03:49:32 2013, ruslan.zakirov@gmail.com wrote:
> > I had to grep cpan to understand what to do to avoid freeing. Still
> > not shure if it's ok to call SvREFCNT_inc(POPs) or if it has to be
> > newSVsv(POPs). If former then example should use most effective
> > variant of SvREFCNT_inc*.
> 
> POPs should never be used in a macro that can evaluate it multiple
> times. You want to pop it into a variable when passing it to any macro
> (such as SvREFCNT_inc) and you may or may not have to un-temp it after
> doing SvREFCNT_inc. newSVsv would be a more foolproof approach.

AFAIK, to get an SV returned from a call_* to live past the FREETMPS, a SvREFCNT_inc is the solution. But, I thought of another situation, what if a DESTROY in a blessed SV being freeded in FREETMPS die()s? The SV* that got a ++ to live past the FREETMPS leaked. The newSVsv solution also leaked.

-- 
bulk88 ~ bulk88 at hotmail.com

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via perlbug:  queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=120017

• [perl #120017] perlcall documentation has no good example with POPs by Ruslan Zakirov
• [perl #120017] perlcall documentation has no good example with POPs by Leon Timmermans via RT
• [perl #120017] perlcall documentation has no good example with POPs by bulk88 via RT
• Re: [perl #120017] perlcall documentation has no good example withPOPs by Dave Mitchell
• [perl #120017] perlcall documentation has no good example with POPs by Father Chrysostomos via RT
• Re: [perl #120017] perlcall documentation has no good example with POPs by Ruslan Zakirov
• Re: [perl #120017] perlcall documentation has no good example with POPs by Eric Brine
• Re: [perl #120017] perlcall documentation has no good example with POPs by Ruslan Zakirov
• Re: [perl #120017] perlcall documentation has no good example with POPs by Eric Brine
• Re: [perl #120017] perlcall documentation has no good example withPOPs by Steffen Mueller
• [perl #120017] perlcall documentation has no good example with POPs by James E Keenan via RT