modena@makoto 18:37:32/130808(..avr/simulavr)% 
gdb /export/CHROOT/usr/pkgsrc/cross/avr-gdb/work/gdb-7.6/gdb/gdb avr-gdb.core 
GNU gdb (GDB) 7.3.1
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64--netbsd".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /export/CHROOT/usr/pkgsrc/cross/avr-gdb/work/gdb-7.6/gdb/gdb...
   (no debugging symbols found)...done.

warning: exec file is newer than core file.
[New process 1]
Core was generated by `avr-gdb'.
Program terminated with signal 11, Segmentation fault.
#0  0x00000000004ef64b in qsort_cmp ()
(gdb) bt
#0  0x00000000004ef64b in qsort_cmp ()
#1  0x00007f7ff68cba13 in qsort () from /usr/lib/libc.so.12
#2  0x00000000004f05ea in find_pc_section ()
#3  0x00000000004f3095 in lookup_minimal_symbol_by_pc_section ()
#4  0x00000000004962ab in find_pc_sect_symtab ()
#5  0x000000000049315d in blockvector_for_pc_sect ()
#6  0x0000000000493260 in block_for_pc_sect ()
#7  0x0000000000577d9f in skip_inline_frames ()
#8  0x00000000004b323c in handle_inferior_event ()
#9  0x00000000004b6e8c in wait_for_inferior ()
#10 0x00000000004b6ff4 in start_remote ()
#11 0x0000000000415b6c in remote_start_remote ()
#12 0x00000000004161db in remote_open_1 ()
#13 0x000000000056be79 in execute_command ()
#14 0x00000000004c9454 in command_handler ()
#15 0x00000000004c9e00 in command_line_handler ()
#16 0x00000000005aa1a1 in rl_callback_read_char ()
#17 0x00000000004c94a4 in rl_callback_read_char_wrapper ()
#18 0x00000000004c88a8 in process_event ()
#19 0x00000000004c8d17 in gdb_do_one_event ()
#20 0x00000000004c8d67 in start_event_loop ()
#21 0x00000000004c304b in captured_command_loop ()
#22 0x00000000004c1e4b in catch_errors ()
#23 0x00000000004c3e75 in captured_main ()
#24 0x00000000004c1e4b in catch_errors ()
#25 0x00000000004c41b5 in gdb_main ()
#26 0x000000000040516a in main ()
(gdb)