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    tschwinge@blubber:~/tmp/gdb/HEAD.build $ echo 'void main(void){*(volatile int *)0;}' |
    > gcc -o 0 -x c -
    <stdin>: In function ‘main’:
    <stdin>:1: warning: return type of ‘main’ is not ‘int’
    tschwinge@blubber:~/tmp/gdb/HEAD.build $ ./0
    Segmentation fault
    tschwinge@blubber:~/tmp/gdb/HEAD.build $ gdb/gdb 0
    GNU gdb (GDB) 7.0.50.20091111-cvs
    Copyright (C) 2009 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 "i386-unknown-gnu0.3".
    For bug reporting instructions, please see:
    <http://www.gnu.org/software/gdb/bugs/>...
    Reading symbols from /media/data/home/tschwinge/tmp/gdb/HEAD.build/0...done.
    (gdb) r
    Starting program: /media/data/home/tschwinge/tmp/gdb/HEAD.build/0 
    Can't fetch registers from thread bogus thread id 1: No such thread
    (gdb) quit
    A debugging session is active.
    
            Inferior 1 [bogus thread id 0] will be killed.
    
    Quit anyway? (y or n) y