Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1216182064 (LWP 29389)]
0x080a8348 in noise4f (x=3606.40015, y=2911.58398, z=486.080017, w=0.330000013)
    at fractalnoise.c:169
169             v[0] = frac[1][0] * (frac[0][0] * noisetable[r[r[r[index[3][0]] ^ index[2][0]] ^ index[1][0]] ^ index[0][0]] + frac[0][1] * noisetable[r[r[r[index[3][0]] ^ index[2][0]] ^ index[1][0]] ^ index[0][1]]) + frac[1][1] * (frac[0][0] * noisetable[r[r[r[index[3][0]] ^ index[2][0]] ^ index[1][1]] ^ index[0][0]] + frac[0][1] * noisetable[r[r[r[index[3][0]] ^ index[2][0]] ^ index[1][1]] ^ index[0][1]]);
(gdb) bt
#0  0x080a8348 in noise4f (x=3606.40015, y=2911.58398, z=486.080017, 
    w=0.330000013) at fractalnoise.c:169
#1  0x080ca327 in RSurf_PrepareVerticesForBatch (generatenormals=false, 
    generatetangents=false, texturenumsurfaces=8, 
    texturesurfacelist=0xbfb28bc4) at gl_rmain.c:3857
#2  0x080cf2d8 in R_DrawTextureSurfaceList (texturenumsurfaces=8, 
    texturesurfacelist=0xbfb28bc4, writedepth=false, depthonly=true)
    at gl_rmain.c:4848
#3  0x080cfe36 in R_QueueSurfaceList (ent=0x13faf244, numsurfaces=852, 
    surfacelist=0xbfb27e94, flagsmask=192, writedepth=false, depthonly=true)
    at gl_rmain.c:5015
#4  0x080d138f in R_DrawWorldSurfaces (skysurfaces=false, writedepth=false, 
    depthonly=true) at gl_rmain.c:5272
#5  0x080d354c in R_Q1BSP_DrawDepth (ent=0x13faf244) at gl_rsurf.c:548
#6  0x080c40d8 in R_RenderScene () at gl_rmain.c:2602
#7  0x080c3eec in R_RenderView () at gl_rmain.c:2552
#8  0x08084f55 in SCR_DrawScreen () at cl_screen.c:1825
#9  0x08086384 in CL_UpdateScreen () at cl_screen.c:2108
#10 0x080dbaec in Host_Main () at host.c:771
#11 0x0804a71c in main (argc=11, argv=0xbfb292e4) at sys_sdl.c:216