Bug#766357: [libnet-cups-perl] bad free() when finalizing the result of getDestinations()

[gregor herrmann]

Control: tag -1 + unreproducible

On Wed, 22 Oct 2014 09:44:34 -0400, Jean Privat wrote:

Thanks for your bug report!

Unfortunately, all these three tests ...

> $ perl /usr/share/doc/libnet-cups-perl/examples/list_dests.pl
[..]

> ~~~perl
> use Net::CUPS;
> {
> $sc = Net::CUPS->new();
> my @pl = $sc->getDestinations();
> print("A\n");
> }
> print("B\n");
> ~~~
> 
> When executed, it prints only A
> 
> ~~~
> A
> *** Error in `perl': free(): invalid pointer: 0x0000000001fba634 ***
> Abandon
> ~~~
> 
> Removing the `my` in `my @pl` force delay the error at the end of the
> program. thus A and B are printed
> 
> ~~~
> $ perl c.pl
> A
> B
> *** Error in `perl': free(): invalid pointer: 0x0000000002459384 ***
> Abandon
> ~~~


... work without any problems for me.


The only thing I notice is ...
 
> --- System information. ---
> Architecture: amd64
> Kernel:       Linux 3.16-3-amd64
> 
> Debian Release: jessie/sid
>   990 testing         security.debian.org
>   990 testing         http.debian.net
>   500 unstable        http.debian.net
>   500 stable          security.debian.org
>   500 stable          http.debian.net
>   500 stable          dl.google.com
>     1 experimental    http.debian.net
> 
> --- Package information. ---
> Depends                (Version) | Installed
> ================================- -==============
> perl               (>= 5.20.0-4) | 5.20.1-1
> perlapi-5.20.0                   |
> libc6                   (>= 2.4) |
> libcups2              (>= 1.6.0) |

... that you are on testing and I'm on unstable but I have no idea if
this make a difference.
 

Anyone else with test results or ideas?
Maybe running /usr/share/doc/libnet-cups-perl/examples/list_dests.pl
under gdb sheds a light where this is happening?


Cheers,
gregor

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