[cairo] Broken mask transformations with pixman

[Jeff Muizelaar]

On Wed, Sep 19, 2007 at 04:46:15PM -0400, Jeff Muizelaar wrote:
> I've attached a patch to pixman and a test case for cairo.
> Running the test under valgrind should give errors about inapproiate reads even
> if the input is not incorrect.

This test case also triggers the following assertion:
cairo-pdf-surface.c:1242: _cairo_pdf_surface_emit_image: Assertion
`image->format == CAIRO_FORMAT_RGB24 || image->format ==
CAIRO_FORMAT_ARGB32' failed.

-Jeff