Re: [Plplot-general] Memory leaks in several plplot functions

[Andrew R. <and...@us...>]

On Thu, Nov 22, 2012 at 09:10:08PM -0800, Alan Irwin wrote:
> On 2012-11-22 22:13+0100 flo...@iw... wrote:
> 
> > Dear Andrew,
> >
> > thanks for the quick reply. My plplot version is 5.9.9 and I use the
> > current cairo driver on Ubuntu12.10.
> 
> @Florian:
> Just to jump in here late, we actually need the exact command you used
> with example 2.
> 
> @Andrew:
> 
> I get valgrind clean results (for the svn trunk version of PLplot
> built on Debian wheezy) for both
> 
> valgrind examples/c/x02c -dev pngcairo -o test.png -fam
> 
> and
> 
> valgrind examples/c/x02c -dev pngcairo -o test.png
> 
> In sharp contrast to those good results
> 
> valgrind examples/c/x02c -dev pscairo -o test.ps -fam
> 
> and
> 
> valgrind examples/c/x02c -dev pscairo -o test.ps
> 
> both have dirty valgrind results.  Pending more precise information
> from Florian, my results may confirm what Florian has found (if in
> fact he used -dev pscairo) or it may be an additional valgrind issue
> that is unrelated to what he found.

Alan,

This is odd, because there definitely seems to be a bug in the plplot
code path for plotting text. I've just fixed it now. This gave
problems for both pngcairo and pscairo for me. This involved leaking
quite large amounts of memory, so I suspect this was Florian's
problem. On my Ubuntu system I still see a number of small leaks which
appear to be cairo / freetype related rather than plplot related.

@Alan Can you check my fix on Debian wheezy?

@Florian You might want to check the latest svn version of plplot to
see if this fixes your problem.

Regards
Andrew