Re: [Maposmatic-dev] cairo null pointer

[Florian Lohoff]

Hi,

On Thu, Sep 19, 2013 at 12:34:39PM +0200, Florian Lohoff wrote:
> On Thu, Sep 19, 2013 at 10:41:00AM +0200, Florian Lohoff wrote:
> > 
> > Hi,
> > i am trying to run render.py on a Debian/Wheezy with mapnik of yesterday
> > and get a "very helpful" error message of cairo. As the path implies
> > its the Debian/Wheezy cairo.
> > 
> > Too old cairo? Too new mapnik?
> 
> Same behaviour with mapnik 2.2 from sid compiled for wheezy ...

Okay - gets more strange - Using the sid mapnik 2.2 with sid cairo 
now and mapnik with logging:

Mapnik LOG> 2013-09-19 11:59:06: pool: Borrow instance=0x2f8cda0
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer:start style processing
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer:end style processing
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: End layer processing
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: Start processing 
layer=shade.shp
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: -- datasource=0x3417e90
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: -- 
query_extent=box2d(8.1996153009645987,51.7705478670171146,8.4008738572187376,51.9169927796253319)
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer:start style processing
Mapnik LOG> 2013-09-19 11:59:06: shape_featureset: Total shapes read=1
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer:end style processing
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: End layer processing
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: Start processing 
layer=grid.shp
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: -- datasource=0x3413100
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: -- 
query_extent=box2d(8.1996153009645987,51.7705478670171146,8.4008738572187376,51.9169927796253319)
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer:start style processing
Mapnik LOG> 2013-09-19 11:59:06: shape_featureset: Total shapes read=120
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer:end style processing
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: End layer processing
Mapnik LOG> 2013-09-19 11:59:06: cairo_renderer_base: End map processing
DEBUG:ocitysmap:Cleaning up /tmp/ocitysmaplJqtNb...
Traceback (most recent call last):
  File "./render.py", line 243, in <module>
    sys.exit(main())
  File "./render.py", line 238, in main
    options.output_prefix)
  File "/home/maposmatic/ocitysmap/ocitysmap/__init__.py", line 462, in render
    file_prefix)
  File "/home/maposmatic/ocitysmap/ocitysmap/__init__.py", line 521, in 
_render_one
    renderer.render(surface, dpi, osm_date)
  File 
"/home/maposmatic/ocitysmap/ocitysmap/layoutlib/single_page_renderers.py", line 
408, in render
    ctx.restore()
cairo.Error: NULL pointer
python: /home/maposmatic/cairo/cairo-1.12.16/src/cairo.c:301: cairo_destroy: 
Assertion `((*&(&cr->ref_count)->ref_count) > 0)' failed.
Aborted

From what i can read we are done with rendering and while cleaning up
we stumble on something with ref counting with a count > 0.

Flo
-- 
Florian Lohoff                                                 address@hidden

signature.asc
Description: Digital signature