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Reading symbols from lc...done.
(gdb) r
Starting program: /home/simon/GitClone/programmes/lc
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7ffff781a700 (LWP 5940)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff781a700 (LWP 5940)]
0x00007ffff789b20a in strlen () from /usr/lib/libc.so.6
(gdb) bt
#0  0x00007ffff789b20a in strlen () from /usr/lib/libc.so.6
#1  0x00007ffff78851ec in puts () from /usr/lib/libc.so.6
#2  0x0000000000400adb in count_lines (args=0x7fffffffe578)
    at lc.c:28
#3  0x00007ffff7bc5374 in start_thread ()
   from /usr/lib/libpthread.so.0
#4  0x00007ffff790327d in clone () from /usr/lib/libc.so.6
(gdb) frame 2
#2  0x0000000000400adb in count_lines (args=0x7fffffffe578)
    at lc.c:28
28	    printf("%s\n", tinfo->file);
(gdb) print tinfo->file
$1 = 0x437469472f6e6f6d <error: Cannot access memory at address 0x437469472f6e6f6d>