or download this
(gdb) backtrace
#0 0x00002aaaae17f1f9 in tag_parser (tag=0x2 <Address 0x2 out of boun
+ds>, len=-1216936334,
...
#6 0x000000398d639dbe in perl_run () from /usr/lib64/perl5/5.8.6/x86_
+64-linux-thread-multi/CORE/libperl.so
#7 0x0000000000401a01 in main ()