[cairo] PDF backend: PDF trailer not written?

[Adrian Johnson]

Sascha Steinbiss wrote:
> My question is now: is it basically possible to corrupt PDF output, 
> especially  getting the PDF trailer dict omitted, only by drawing 
> operations on a cairo_t without ever doing nasty things with the 
> surface? If so, I would be glad to get some directions on how to ensure 
> the PDF is complete. If this may be a bug, I can give more extensive 
> code examples (although I cannot provide a minimal example without 
> dependencies to my code at the moment, as I do not see the most likely 
> cause yet). System is Linux, Arch to be exact.
> 
> Thanks in advance,
> Sascha

An incomplete PDF file is a result of an error occurring while creating 
the PDF. You can check the surface status to find out what went wrong.

For example:

   cairo_surface_finish (surface);
   status = cairo_surface_status (surface);
   cairo_surface_destroy (surface);
   printf("%s\n", cairo_status_to_string (status));