Re: PARI and valgrind

[Karim Belabas <Karim.Belabas@math.u-bordeaux1.fr>]

* Bill Allombert [2012-02-06 14:16]:
> On Mon, Feb 06, 2012 at 04:51:13PM +0900, Xavier-François Roblot wrote:
> > Dear Pari dev,
> > 
> > I am trying to debug some C-functions that I am using in PARI/GP using the
> > install functionality. One of the functions gives the following error:
> > 
> > malloc: *** error for object 0x1008126c0: pointer being freed was not allocated
> > 
> > I'd like to use valgrind to find out where the error happens exactly but I
> > was not able so far to find any instructions on how to do that. If anybody
> > could give me some hints me on how to proceed, I would be very grateful.
> 
> First, use a debug build of GP and your code.
> Second, use
> valgrind --db-attach=yes ./gp.dbg
> and valgrind will offer you to use the debugger to investigate the problem.
> There, you can use bt and up to locate the issue.

Note that this is mentioned in the (short) slide

  http://pari.math.u-bordeaux1.fr/Events/PARI2012/talks/new.pdf

which is part of the webpage dedicated to the PARI/GP Atelier 2012

  http://pari.math.u-bordeaux1.fr/Events/PARI2012/

already posted on this list :-)

Cheers,

    K.B.
-- 
Karim Belabas, IMB (UMR 5251)  Tel: (+33) (0)5 40 00 26 17
Universite Bordeaux 1          Fax: (+33) (0)5 40 00 69 50
351, cours de la Liberation    http://www.math.u-bordeaux1.fr/~belabas/
F-33405 Talence (France)       http://pari.math.u-bordeaux1.fr/  [PARI/GP]
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