Comment # 5 on bug 1176048 from Yifan Jiang

Attaching the backtrace for further reference:

> #0  __GI_____strtoul_l_internal (nptr=nptr@entry=0x0, endptr=endptr@entry=0x7fff71cbf0b8, base=base@entry=10,
>     group=group@entry=0, loc=0x7fd80d5b4680 <_nl_C_locobj>) at ../stdlib/strtol_l.c:292
> #1  0x00007fd80d23f78a in __GI___strtoul_l (nptr=nptr@entry=0x0, endptr=endptr@entry=0x7fff71cbf0b8, base=base@entry=10,
>     loc=<optimized out>) at ../stdlib/strtol_l.c:547
> #2  0x00007fd814181db7 in g_ascii_strtoull (nptr=nptr@entry=0x0, endptr=endptr@entry=0x7fff71cbf0b8, base=base@entry=10)
>     at ../glib/gstrfuncs.c:1170
> #3  0x00007fd80737150d in _cogl_gpu_info_parse_version_string (version_string=<optimized out>,
>     tail=tail@entry=0x7fff71cbf0f0, version_ret=version_ret@entry=0x0, n_components=2) at cogl-gpu-info.c:90
> #4  0x00007fd8073715be in check_mesa_driver_package (strings=<optimized out>, version_ret=0x561b55c56718)
>     at cogl-gpu-info.c:421
> #5  0x00007fd8073718c2 in _cogl_gpu_info_init (ctx=ctx@entry=0x561b55c566a0, gpu=gpu@entry=0x561b55c566f8)
>     at cogl-gpu-info.c:527
> #6  0x00007fd80736fdf1 in _cogl_driver_update_features (context=0x561b55c566a0, error=<optimized out>)
>     at driver/gl/gles/cogl-driver-gles.c:284
> #7  0x00007fd8073abb07 in _cogl_winsys_context_init (context=0x561b55c566a0, error=<optimized out>)
>     at winsys/cogl-winsys-stub.c:110
> #8  0x00007fd807372021 in cogl_context_new (display=0x561b55c5f470, error=error@entry=0x7fff71cbf270) at cogl-context.c:237
> #9  0x00007fd808021b6e in clutter_backend_do_real_create_context (error=0x7fff71cbf268, driver_id=<optimized out>,
>     backend=0x561b55d82c20) at clutter-backend.c:331
> #10 clutter_backend_real_create_context (backend=0x561b55d82c20, error=0x7fff71cbf3f0) at clutter-backend.c:414
> #11 0x00007fd80803adf3 in _clutter_feature_init (error=error@entry=0x7fff71cbf3f0) at clutter-feature.c:107
> #12 0x00007fd80804c299 in clutter_init_real (error=error@entry=0x7fff71cbf3f0) at clutter-main.c:1406
> #13 0x00007fd80804c488 in post_parse_hook (context=<optimized out>, group=<optimized out>, data=<optimized out>,
>     error=0x7fff71cbf3f0) at clutter-main.c:1572
> #14 0x00007fd81416df2e in g_option_context_parse (context=context@entry=0x561b55c05210, argc=argc@entry=0x7fff71cbf45c,
>     argv=argv@entry=0x7fff71cbf450, error=error@entry=0x7fff71cbf3f0) at ../glib/goption.c:2232
> #15 0x00007fd80804d288 in clutter_parse_args (error=0x7fff71cbf3e8, argv=0x7fff71cbf450, argc=0x7fff71cbf45c)
>     at clutter-main.c:1792
> #16 clutter_init (argc=argc@entry=0x7fff71cbf45c, argv=argv@entry=0x7fff71cbf450) at clutter-main.c:1854
> #17 0x00007fd807604ed6 in gtk_clutter_init (argc=argc@entry=0x7fff71cbf45c, argv=argv@entry=0x7fff71cbf450)
>     at ../clutter-gtk/gtk-clutter-util.c:231
> #18 0x00007fd811d75a6c in cheese_gtk_init (argc=0x7fff71cbf45c, argv=0x7fff71cbf450) at ../libcheese/cheese-gtk.c:58
> #19 0x0000561b54b99cba in initialize_dependencies (argv=0x7fff71cbf450, argc=0x7fff71cbf45c) at ../shell/main.c:50
> #20 main (argc=<optimized out>, argv=<optimized out>) at ../shell/main.c:66