[cairo] How to free the memory allocated by cairo_image_surface_create_for_png?

[Charles Wang]

Hi:

I'm interesting at cairo greatly and have compose a test program to try
it. When I try to use memory leak tools (valgrind) to test it, I noticed
that the memory allocated at
 cairo-png.c:302
    data = malloc (png_width * png_height * pixel_size);
is not freed.

So I check the API of cairo, cairo-png not free it and there is no way
to let me know this pointer and free it.

Is there any method to avoid this memory leak?

Thanks.

Charles  April 4th, 2005