Hi a third time:
It seems that this problem with the cairo drivers (for old
pango/cairo) cropped up some time between plplot5.9.7 and 5.9.8, since
the problem is not there for 5.9.7, but is there for 5.9.8.
Regards,
Doug
dh...@ucar.edu
Software Engineer
UCAR - COSMIC, Tel. (303) 497-2611
On Thu, 17 May 2012, Doug Hunt wrote:
> Hi again: I've become frustrated with trying to install a recent pango/cairo
> under CentOS 5.8--too many dependencies.
>
> So, in trying to debug the segfault, I've found that:
>
> ./x01c -dev pngcairo -o foo.png
>
> finally dies beyond tracing (in the plplot code, anyway) at:
>
> line 289 of plcore:
>
> 289 ( *plsc->dispatch_table->pl_esc )( (struct PLStream_struct *) plsc, op,
> ptr );
>
> (see attached stack trace).
>
> The function pointer called was in cairo code (I think):
>
> (gdb) p *plsc->dispatch_table->pl_esc
> $20 = {void (struct PLStream_struct *, PLINT, void *)} 0x2aaaabd71087
> <plD_esc_cairo>
>
> The program was just in the process of drawing an axis label (the number '1')
> deep within plbox.
>
> Any ideas what I can do here short of upgrading my entire OS?
>
> Thanks,
>
> Doug
>
> dh...@ucar.edu
> Software Engineer
> UCAR - COSMIC, Tel. (303) 497-2611
>
> On Thu, 17 May 2012, Doug Hunt wrote:
>
>> Hi all: I'm just now upgrading to plplot 5.9.9 in my CentOS 5.8
>> environment. This OS features old pango/cairo versions:
>>
>> pango-1.14.9-8.el5.centos.3
>> pango-devel-1.14.9-8.el5.centos.3
>> cairo-1.2.4-5.el5
>> cairo-devel-1.2.4-5.el5
>>
>> When I run example 1 with any of the cairo devices, I get a segfault:
>>
>> [rpmbuild@fox c]$ ./x01c -dev pngcairo -o foo.png
>> PLplot library version: 5.9.9
>> Segmentation fault
>>
>> Other device drivers work fine.
>>
>> Has anyone seen this? If not, I'll start debugging and/or trying to
>> upgrade to a more recent pango/cairo.
>>
>> Regards,
>>
>> Doug
>>
>> dh...@ucar.edu
>> Software Engineer
>> UCAR - COSMIC, Tel. (303) 497-2611
>>
>>
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