fdo-mirrors/cairo
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/cairo/cairo.git synced 2026-05-08 03:18:05 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

[output-stream] Protect against NULL write_func.

Browse source 
Allow the user to specify a NULL write_func for the output stream so that
a dummy surface can be created, for example, for querying target font
options or font extents.

Currently we do not perform any sanity checks at the user entry point and
will generate a mysterious SEGV during cairo_surface_finish() - which may
not immediately be obvious that it is due to a NULL write_func.
This commit is contained in:
Chris Wilson 2008-10-15 22:24:32 +01:00
parent 84e4a825ff
commit 41c8eefc6d
1 changed files with 3 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/cairo-output-stream.c
View file

@ -116,6 +116,9 @@ closure_write (cairo_output_stream_t *stream,
cairo_output_stream_with_closure_t *stream_with_closure =
(cairo_output_stream_with_closure_t *) stream;
if (stream_with_closure->write_func == NULL)
return CAIRO_STATUS_SUCCESS;
return stream_with_closure->write_func (stream_with_closure->closure,
data, length);
}