package: tuxmath severity: important x-debbugs-cc: tuxmath-de...@lists.sourceforge.net
hi,
thanks for your bug report, filing it as such, so it doesnt get
forgotten.
On Sun, Jul 28, 2019 at 12:57:02PM -0400, Amadeus WM via Tuxmath-devel wrote:
> I've been using tuxmath under (Fedora) Linux and tuxmath crashes now.
> This has been going on for some time now, so in the absence of an
> official fix, I looked into the problem myself. I've traced it to this:
>
> In t4k_loaders.c, load_svg_sprite() calls rsvg_handle_get_desc() on line 217
> or so, which has been deprecated as of gnome 2.36. In my version of
> librsvg/rsvg-handle.c, it says that librsvg does not read the
> metadata/desc/title elements.
>
> See details and backtraces below.
>
> I've never used rsvg and I don't know its API, so I cannot fix tuxmath
> beyond this point. Any chance you guys can provide a fix? I hope the
> gnome changes do not require a complete rework.
>
> Thanks!
>
>
>
> (gdb) bt
> #0 0x00007f6260d71b17 in __rawmemchr_avx2 () at
> ../sysdeps/x86_64/multiarch/memchr-avx2.S:65
> #1 0x00007f6260c95836 in _IO_str_init_static_internal
> (sf=sf@entry=0x7ffe36344890, ptr=ptr@entry=0x0, size=size@entry=0,
> pstart=pstart@entry=0x0) at strops.c:41
> #2 0x00007f6260c88741 in _IO_vsscanf (string=0x0, format=0x7f6260e3cfc2
> "%d", args=args@entry=0x7ffe363449c0)
> at iovsscanf.c:40
> #3 0x00007f6260c82d08 in __sscanf (s=<optimized out>,
> format=format@entry=0x7f6260e3cfc2 "%d") at sscanf.c:32
> #4 0x00007f6260e333ed in load_svg_sprite (file_name=<optimized out>,
> width=width@entry=-1, height=height@entry=-1)
> at t4k_loaders.c:217
> #5 0x00007f6260e3455f in load_sprite
> (name=name@entry=0x430421 "comets/comet", mode=mode@entry=4,
> w=w@entry=-1, h=h@entry=-1, proportional=proportional@entry=false) at
> t4k_loaders.c:714
> #6 0x00007f6260e349bc in T4K_LoadScaledSprite
> (name=name@entry=0x430421 "comets/comet", mode=mode@entry=4,
> width=width@entry=-1, height=height@entry=-1)
> at t4k_loaders.c:651
> #7 0x00007f6260e349d0 in T4K_LoadSprite (name=name@entry=0x430421
> "comets/comet", mode=mode@entry=4) at t4k_loaders.c:646
> #8 0x000000000041741c in load_image_data () at fileops_media.c:213
> #9 0x0000000000405790 in load_data_files () at setup.c:759
> #10 0x00000000004064b3 in setup (argc=1, argv=0x7ffe363458b8) at setup.c:139
> #11 0x0000000000404b89 in main (argc=<optimized out>, argv=<optimized out>)
> at tuxmath.c:40
>
>
>
> Core due to sscanf being called with NULL string pointer.
>
> 94 sprite* load_svg_sprite(const char* file_name, int width, int height)
> 195 {
> 196 RsvgHandle* file_handle;
> 197 sprite* new_sprite;
> <snip>
> 214 new_sprite->default_img = render_svg_from_handle(file_handle, width,
> height, "#default");
> 215
> 216 /* get number of frames from description */
> 217 sscanf(rsvg_handle_get_desc(file_handle), "%d",
> &new_sprite->num_frames);
>
>
>
>
>
> /**
> * rsvg_handle_get_desc:
> * @handle: An #RsvgHandle
> *
> * Returns: (nullable): This function always returns NULL.
> *
> * Since: 2.4
> *
> * Deprecated: 2.36. Librsvg does not read the metadata/desc/title elements;
> * this function always returns #NULL.
> */
> const char *
> rsvg_handle_get_desc (RsvgHandle *handle)
> {
> g_return_val_if_fail (handle, NULL);
>
> return NULL;
> }
>
>
>
>
>
>
> _______________________________________________
> Tuxmath-devel mailing list
> tuxmath-de...@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/tuxmath-devel
--
tschau,
Holger
-------------------------------------------------------------------------------
holger@(debian|reproducible-builds|layer-acht).org
PGP fingerprint: B8BF 5413 7B09 D35C F026 FE9D 091A B856 069A AA1C
signature.asc
Description: PGP signature
