(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7e0f8d0 (LWP 3047)]
0xa7a4ba58 in fetch_texel_2d_argb8888 (texImage=0x831cd00, i=408, j=255, k=0,
    texel=0xbff79188 "\001") at main/texformat_tmp.h:660
660        const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
(gdb) bt
#0  0xa7a4ba58 in fetch_texel_2d_argb8888 (texImage=0x831cd00, i=408, j=255,
    k=0, texel=0xbff79188 "\001") at main/texformat_tmp.h:660
#1  0xa7ac33ac in sample_2d_linear (ctx=0xff, tObj=0x841aeb8, img=0x831cd00,
    texcoord=0xbff79324,
    rgba=0xbff79268 "Xã>\bô\237º§$\223÷¿H3<\bx\223÷¿Á\aª§Háj\b$\223÷¿HÝ÷¿\210Þ÷¿") at swrast/s_texfilter.c:989
#2  0xa7acd623 in sample_linear_2d (ctx=0x86ae148, tObj=0x841aeb8, n=1,
    texcoords=0xbff79324, lambda=0xbff79264, rgba=0xbff79268)
    at swrast/s_texfilter.c:1202
#3  0xa7b47373 in fetch_texel_deriv (ctx=0x86ae148, texcoord=0xbff79324,
    texdx=0xbff7dd48, texdy=0xbff7de88, lodBias=0, unit=1, color=0xbff79354)
    at swrast/s_fragprog.c:84
#4  0xa7aa07c1 in _mesa_execute_program (ctx=0x86ae148, program=0x854e7b8,
    machine=0x83ee358) at shader/prog_execute.c:319
#5  0xa7b4708a in _swrast_exec_fragment_program (ctx=0x86ae148,
    span=0xbff7db9c) at swrast/s_fragprog.c:158
#6  0xa7ab91af in _swrast_write_rgba_span (ctx=0x86ae148, span=0xbff7db9c)
    at swrast/s_span.c:1204
#7  0xa7ad40bb in general_triangle (ctx=0x86ae148, v0=0xa29b3f80,
    v1=0xa29b40c8, v2=0xa29b4358) at swrast/s_tritemp.h:863
#8  0xa7aabe5e in _swrast_Triangle (ctx=0x86ae148, v0=0xa29b3f80,
    v1=0xa29b40c8, v2=0xa29b4358) at swrast/s_context.c:729
#9  0xa7ae6d41 in triangle_rgba (ctx=0x86ae148, e0=12, e1=13, e2=15)
#10 0xa7ae6d73 in quadfunc_rgba (ctx=0x86ae148, v0=12, v1=13, v2=14, v3=15)
    at swrast_setup/ss_tritmp.h:250
#11 0xa7a809b1 in clip_render_quads_verts (ctx=0x86ae148, start=0, count=36,
    flags=55) at tnl/t_vb_rendertmp.h:338
#12 0xa7a8376a in run_render (ctx=0x86ae148, stage=0x83ef4bc)
    at tnl/t_vb_render.c:320
#13 0xa7a7b0db in _tnl_run_pipeline (ctx=0x86ae148) at tnl/t_pipeline.c:158
#14 0xa79e26ac in intelRunPipeline (ctx=0x86ae148) at intel_tris.c:898
#15 0xa7a7bfc9 in _tnl_draw_prims (ctx=0x86ae148, arrays=0x859fdc0,
    prim=0xbff7e340, nr_prims=1, ib=0x0, min_index=0, max_index=35)
    at tnl/t_draw.c:402
#16 0xa7a7452f in vbo_exec_DrawArrays (mode=7, start=0, count=36)
    at vbo/vbo_exec_array.c:259
#17 0xb7de43c8 in __glXDisp_DrawArrays (pc=0x841b7a8 "") at render2.c:248
#18 0xb7dc1f68 in __glXDisp_Render (cl=0x83f269c, pc=0x841b750 "\237\001§")
    at glxcmds.c:1778
#19 0xb7dc6296 in __glXDispatch (client=0x83f2568) at glxext.c:493
#20 0x0815102e in XaceCatchExtProc (client=0x83f2568) at xace.c:294
#21 0x0808cbc3 in Dispatch () at dispatch.c:502
#22 0x08073e9b in main (argc=9, argv=0xbff7e594, envp=0xbff79268) at main.c:454
(gdb)