Backtrace

Program received signal SIGSEGV, Segmentation fault.
fw_split (prefix=0x602120 <prefix> "XM.ar7240.v5.5.8.20991.140205.1824", fw=0x7fffffffc970) at src/fwsplit.c:158
158                     fprintf(f, "%s\t\t0x%02X\t0x%08X\t0x%08X\t0x%08X\t0x%08X\t%s.%s\n",
(gdb) bt
#0  fw_split (prefix=0x602120 <prefix> "XM.ar7240.v5.5.8.20991.140205.1824", fw=0x7fffffffc970) at src/fwsplit.c:158
#1  do_fwsplit (filename=<optimized out>) at src/fwsplit.c:257
#2  0x0000000000401435 in main (argc=2, argv=0x7fffffffdcc8) at src/fwsplit.c:297