ashanti:~> gdb /usr/local/bin/zsh /home/jason/temp2/core GDB is free software and you are welcome to distribute copies of it under certain conditions; type "show copying" to see the conditions. There is absolutely no warranty for GDB; type "show warranty" for details. GDB 4.16 (i386-unknown-solaris2.5), Copyright 1996 Free Software Foundation, Inc... (no debugging symbols found)... Core was generated by `zsh'. Program terminated with signal 11, Segmentation fault. #0 0xb9268d25 in ?? () (gdb) where #0 0xb9268d25 in ?? () #1 0x80798c1 in handler () #2 0x800bf56d in ?? () #3 0xffffffff in ?? () #4 0xdc2ea8af in ?? () Cannot access memory at address 0xd61eaed3. (gdb)