Hello, So...
--8<---------------cut here---------------start------------->8--- [l...@nixey:~/src/inetutils/+build]$ gdb ./ifconfig/ifconfig GNU gdb (GDB) 7.0.1 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 "x86_64-unknown-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /data/src/inetutils/+build/ifconfig/ifconfig...done. (gdb) r --help Starting program: /data/src/inetutils/+build/ifconfig/ifconfig --help Usage: ifconfig [OPTION...] NAME [ADDR] [broadcast BRDADDR] [pointopoint|dstaddr DSTADDR] [netmask MASK] [metric N] [mtu N] [txqueuelen N] [up|down] [FLAGS] Configure network interfaces. -a, --all display all available interfaces -A, --address=ADDR set interface address to ADDR -B, -b, --broadcast=ADDR, --brdaddr=ADDR set broadcast address to ADDR -d, -p, --dstaddr=ADDR, --peer=ADDR set destination (peer) address to ADDR --down shut the interface down --format=FORMAT select output format (or set back to default) -F, --flags=FLAG[,FLAG...] set interface flags -i, --interface=NAME configure network interface NAME -m, --netmask=MASK set netmask to MASK --metric=N set metric of interface to N -M, --mtu=N set mtu of interface to N -s, --short short output format --up activate the interface (default if address is given) -v, --verbose output information when configuring interface Linux-specific options -T, --txqlen=N set transmit queue length to N -?, --help give this help list --usage give a short usage message Program received signal SIGSEGV, Segmentation fault. 0x00007ffff76d00c2 in strlen () from /nix/store/4jl83jgzaacf519h3wczgbjvqi91hfk6-glibc-2.11.1/lib/libc.so.6 (gdb) bt full #0 0x00007ffff76d00c2 in strlen () from /nix/store/4jl83jgzaacf519h3wczgbjvqi91hfk6-glibc-2.11.1/lib/libc.so.6 No symbol table info available. #1 0x000000000040221c in if_list_flags (prefix=0x40dabb "Known flags are: ") at ../../ifconfig/flags.c:248 len = 142 fp = 0x6135e0 fnames = <value optimized out> i = <value optimized out> str = 0x7ffff76c0fc5 "H9\305t\304H\203\370\377u\266\353\274f\017\037D" p = <value optimized out> #2 0x000000000040a7c2 in argp_doc (argp=<value optimized out>, state=<value optimized out>, post=1, pre_blank=1, first_only=0, stream=0x6154d0) at ../../lib/argp-help.c:1554 text = 0x5500000001 <Address 0x5500000001 out of bounds> inp_text = 0x0 inp_text_len = <value optimized out> trans_text = 0x0 input = 0x7fffffffc6f0 anything = 0 child = 0x614700 #3 0x000000000040a8e2 in argp_doc (argp=<value optimized out>, state=<value optimized out>, post=1, pre_blank=1, first_only=0, stream=0x6154d0) at ../../lib/argp-help.c:1571 text = <value optimized out> inp_text = 0x1 <Address 0x1 out of bounds> inp_text_len = <value optimized out> trans_text = 0x0 input = 0x0 anything = 0 child = 0x7fffffffc4e0 #4 0x000000000040b350 in _help (argp=<value optimized out>, state=<value optimized out>, stream=<value optimized out>, flags=21, name=<value optimized out>) at ../../lib/argp-help.c:1701 anything = 1 hol = <value optimized out> fs = 0x6154d0 #5 0x000000000040be77 in argp_state_help (state=0x7fffffffc600, stream=<value optimized out>, flags=634) at ../../lib/argp-help.c:1765 No locals. #6 0x00000000004074bb in argp_default_parser (key=<value optimized out>, arg=0x0, state=0x7fffffffc600) at ../../lib/argp-parse.c:95 No locals. #7 0x00000000004072ff in group_parse (group=0x6150a0, state=0x7fffffffc600, key=0, arg=0x5500000001 <Address 0x5500000001 out of bounds>) at ../../lib/argp-parse.c:232 err = <value optimized out> #8 0x00000000004080f8 in parser_parse_opt (argp=<value optimized out>, argc=<value optimized out>, argv=<value optimized out>, flags=<value optimized out>, end_index=<value optimized out>, input=<value optimized out>) at ../../lib/argp-parse.c:744 No locals. #9 parser_parse_next (argp=<value optimized out>, argc=<value optimized out>, argv=<value optimized out>, flags=<value optimized out>, end_index=<value optimized out>, input=<value optimized out>) at ../../lib/argp-parse.c:855 opt = 50331711 #10 argp_parse (argp=<value optimized out>, argc=<value optimized out>, argv=<value optimized out>, flags=<value optimized out>, end_index=<value optimized out>, input=<value optimized out>) at ../../lib/argp-parse.c:923 err = 7 parser = {argp = 0x7fffffffc470, short_opts = 0x615478 "-vai:A:m:d:p:B:b:M:F:sT:?V", long_opts = 0x615198, opt_data = {rpl_optind = 2, rpl_opterr = 1, rpl_optopt = -1, rpl_optarg = 0x0, __initialized = 1, __nextchar = 0x7fffffffcbca "", __ordering = RETURN_IN_ORDER, __posixly_correct = 0, __first_nonopt = 1, __last_nonopt = 1}, groups = 0x615010, egroup = 0x615130, child_inputs = 0x615178, try_getopt = 1, state = {root_argp = 0x7fffffffc470, argc = 2, argv = 0x7fffffffc828, next = 2, flags = 8, arg_num = 0, quoted = 0, input = 0x0, child_inputs = 0x0, hook = 0x0, name = 0x7fffffffcbbb "ifconfig", err_stream = 0x7ffff79aa860, out_stream = 0x7ffff79aa780, pstate = 0x7fffffffc590}, storage = 0x615010} #11 0x0000000000403044 in parse_cmdline (argc=2, argv=0x7fffffffc828) at ../../ifconfig/options.c:587 index = <value optimized out> ifp = 0x0 #12 0x0000000000401e39 in main (argc=0, argv=0x0) at ../../ifconfig/ifconfig.c:63 err = <value optimized out> sfd = <value optimized out> ifp = <value optimized out> (gdb) frame 1 #1 0x000000000040221c in if_list_flags (prefix=0x40dabb "Known flags are: ") at ../../ifconfig/flags.c:248 248 len += strlen (fp->name) + 1; (gdb) p fp->name $1 = 0x5500000001 <Address 0x5500000001 out of bounds> --8<---------------cut here---------------end--------------->8--- And the patch: 2010-03-09 Ludovic Courtès <l...@gnu.org> * ifconfig/flags.c (if_flags): Add trailing entry with NULL `name'.
diff --git a/ifconfig/flags.c b/ifconfig/flags.c
index 05371b2..60c5a7c 100644
--- a/ifconfig/flags.c
+++ b/ifconfig/flags.c
@@ -224,6 +224,7 @@ struct if_flag
#ifdef IFF_D2 /* Flag is specific to device. */
{"D2", IFF_D2},
#endif
+ { NULL, 0 }
};
static int
Thanks, Ludo’.
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