[cairo] segment fault when rendering text with space charactors onto glitz surface.

Vladimir Vukicevic vladimirv at gmail.com
Tue Aug 9 14:28:32 PDT 2005

On 8/9/05, David Reveman <davidr at novell.com> wrote:
> On Tue, 2005-08-09 at 09:51 -0700, Vladimir Vukicevic wrote:
> > Here's an updated patch for this issue, as well as not initializing
> > the memory entry member (I sent both patches separately earlier, this
> > is both combined and updated to latest CVS).  Carl/David, let me know
> > if it's ok to commit this..
> It's OK commit it.
> I'm not sure the:
> (area == &_empty_area)
> check is necessary as the code should never try top move in areas with
> width == 0 or height == 0 but I might be wrong so it's OK to commit it
> as it is, I'll change it later if it turns out not necessary.

Hmm, so applying this patch to current CVS (with my patch checked in)
still caused a slightly different crash with 0-space characters.  The
attached patch fixes it, but at this point I'm just playing
whack-a-mole without a full understanding of the glitz glyph caching
implementation... in any case I'd like to check the patch in, since
text seems to render with it, but I have no idea about the correctness
-- specifically, I'm not sure why we ever have an image_entry->image
for a space character.  The move_in check isn't needed with this...

    - Vlad
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