Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 47607480224016 (LWP 14545)]
0x000000000040b62e in lookup_erf (z=-nan(0x400000))
    at src/client/cl_actor.c:3072
3072            return lookup[iint] + (z - ifloat / 10.0f) * lookupdiff[iint];
(gdb) bt
#0  0x000000000040b62e in lookup_erf (z=-nan(0x400000))
    at src/client/cl_actor.c:3072
#1  0x000000000040bade in CL_TargetingToHit (toPos=0x6fd3bc "z~")
    at src/client/cl_actor.c:3124
#2  0x000000000040c3b9 in CL_TargetingStraight (fromPos=0xa2f80ec "z~", 
    toPos=0x6fd3bc "z~") at src/client/cl_actor.c:3281
#3  0x000000000040d0b0 in CL_AddTargeting () at src/client/cl_actor.c:3556
#4  0x000000000047f1d3 in V_RenderView (stereo_separation=0)
    at src/client/cl_view.c:612
#5  0x000000000046da9c in SCR_UpdateScreen () at src/client/cl_screen.c:752
#6  0x0000000000446e24 in CL_Frame (msec=16) at src/client/cl_main.c:2534
#7  0x0000000000492daa in Qcommon_Frame (msec=16) at src/qcommon/common.c:998
#8  0x00000000004b6ed4 in main (argc=1, argv=0x7fff332dba88)
    at src/ports/linux/sys_linux.c:394