Bug #125298 for Geo-Proj4: Memory leak in module Geo-Proj4-1.09

Thu May 10 18:14:28 2018 alexey [...] zhilchikov.ru - Ticket created

Subject:

Memory leak in module Geo-Proj4-1.09

The "transform" method has a memory leak: one lost REF after every call of function. I used Devel::MAT::Dumper and pmat-diff util 1.pmat contain memory dump before transform 2.pmat contain memory dump after transform: # pmat-diff 1.pmat 2.pmat A B SCALAR(PV) at 0x564997cb16b0 SCALAR(NV) at 0x564997cb16c8 (this is coordinate X) SCALAR(PV) at 0x564997cb1728 (this is dump file name) SCALAR(NV) at 0x564997cb1770 (this is coordinate Y) REF() at 0x564997cb1908 (LOST REF! Interpreter can't access it anymore) ARRAY(2) at 0x564997cb19b0 (this is coordinates, array ref) --- 1 unique to A 5 unique to B 6925 common "REF() at 0x564997cb1908" have a refcount, but actually thereis no objects, referencing on it: Show quoted text

pmat> show 0x564997cb1908

REF() at 0x564997cb1908 with refcount 1 size 24 bytes Show quoted text

pmat> identify 0x564997cb1908

REF() at 0x564997cb1908 is: └─not found I used your *.t files to make a dumps: add a Dumper::dump, then "make test". Dumps are attached. "inverse" and "forward" methods are OK.

Subject:

pmatdumps.tgz

Download pmatdumps.tgz
application/x-compressed-tar 964.4k

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Fri May 11 17:54:08 2018 Mark [...] Overmeer.net - Correspondence added

CC:	;
Subject:	Re: [rt.cpan.org #125298] Memory leak in module Geo-Proj4-1.09
Date:	Fri, 11 May 2018 23:38:12 +0200
To:	"alexey [...] zhilchikov.ru via RT" <bug-Geo-Proj4 [...] rt.cpan.org>
From:	Mark Overmeer <mark [...] overmeer.net>

* alexey@zhilchikov.ru via RT (bug-Geo-Proj4@rt.cpan.org) [180510 22:14]: Show quoted text

> Thu May 10 18:14:28 2018: Request 125298 was acted upon. > Transaction: Ticket created by alexey@zhilchikov.ru > Queue: Geo-Proj4 > Subject: Memory leak in module Geo-Proj4-1.09 > Requestors: alexey@zhilchikov.ru > Ticket <URL: https://rt.cpan.org/Ticket/Display.html?id=125298 > > > The "transform" method has a memory leak: one lost REF after every > call of function. > I used Devel::MAT::Dumper and pmat-diff util > 1.pmat contain memory dump before transform > 2.pmat contain memory dump after transform:

Transform is implemented by Proj4.xs function transform_proj4() Show quoted text

> # pmat-diff 1.pmat 2.pmat > A B > SCALAR(PV) at 0x564997cb16b0 > SCALAR(NV) at 0x564997cb16c8 (this is coordinate X) > SCALAR(PV) at 0x564997cb1728 (this is dump file name) > SCALAR(NV) at 0x564997cb1770 (this is coordinate Y) > REF() at 0x564997cb1908 (LOST REF! Interpreter can't access it anymore) > ARRAY(2) at 0x564997cb19b0 (this is coordinates, array ref)

When I look at lines 180 - 196, I see that it constructs a stack: - IV(0) no error - PV('no error') - ARRAY(2) one or more times So, I have no idea what you see with 'pmat'. Apparently, you have a lot more knowledge about this than I have. Please supply a patch ;-) -- greetz, MarkOv ------------------------------------------------------------------------ drs Mark A.C.J. Overmeer MARKOV Solutions Mark@Overmeer.net solutions@overmeer.net http://Mark.Overmeer.net http://solutions.overmeer.net

Fri May 11 17:54:08 2018 The RT System itself - Status changed from 'new' to 'open'