[SDL] IMG_ReadXPMFromArray

[James Buchwald]

Alvin Beach <alvinbeach <at> gmail.com> writes:

> 
> Hello,
> 
> I'm not sure if this is the correct list, but I cannot find an
> SDL_image mailing-list.
> 
> I believe there is a bug in IMG_ReadXPMFromArray() in IMG_xpm.c.
> IMG_ReadXPMFromArray(char **xpm) calls load_xpm(xpm, NULL). However,
> in load_xpm(), calls:
>    start = SDL_RWops(src);
> 
> But, src is NULL. This causes a segfault to occur.
> 
> I currently have to use SDL_image-1.2.4-16 which does not make this calls.
> 
> I have had this segfault occur in openSUSE 10.2 with
> SDL_image-1.2.5-24. Both versions are supplied by openSUSE as rpms.
> 
> I see that in the SVN
>
(http://www.libsdl.org/cgi/viewvc.cgi/trunk/SDL_image/IMG_xpm.c?revision=2390&view=markup)
> the SDL_RWops() has been replaced with SDL_RWtell(). Does anyone know
> if SDL_RWtell() will segfault if a null pointer is passed to it?
> 
> I haven't tried installing the SVN version, but I thought I would ask
> around if anyone else experiences a segfault when loading an XPM image
> from an array (not a file).
> 
> One final note, I'm using SDL 1.2.11-22 as provided by openSUSE for v10.2.
> 
> Thank you,
> 
> Alvin
> 

Yes, I've been having this same problem, with the core dump pointing to that
statement as the cause. I'm seeing it in Debian 3.1 "Sarge" AMD64 platform (with
a self-built SDL and SDL_image, not one from apt). I tried the Subversion copy,
but it has the same problem, at the SDL_RWtell() line. Specifically, from my
core dump:

#0  load_xpm (xpm=0x50d360, src=0x0) at IMG_xpm.c:329
329             start = SDL_RWtell(src);