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$ gdb a.out core
GNU gdb (GDB) 7.0.1-debian
Copyright © 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <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-linux-gnu".
For bug reporting instructions, please see:
<www.gnu.org/software/gdb/bugs/>...
Reading symbols from /tmp/a.out...done.
warning: Can't read pathname for load map: Ошибка ввода/вывода.
Reading symbols from /lib/libc.so.6...Reading symbols from /usr/lib/debug/lib/libc-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from /usr/lib/debug/lib/ld-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Core was generated by `./a.out'.
Program terminated with signal 11, Segmentation fault.
#0 0x000000000040049d in main () at a.c:3
3 *((int *) 0) = 0;
(gdb)
Введение в postmortem debugging