Gdb

You have a corefile, like xine.core. gdb $program $corefile:

gdb /usr/X11R6/bin/xine ./xine.core

An example in gdb to find out where your application crashed (the CPU instruction in memory):

(gdb) where (gdb) disass
 * 1) 0 0x0000ealf

and look for 0x0000ealf