it looks that there's some issue with tuple passing
(PyArg_ParseTuple). the last argument of vgetargs1(), which is 0,
is dereferenced in convertsimple(). sorry if this is due to
my mistake in socketmodule IPv6 support.
itojun
(gdb) run
Starting program: /usr/home/itojun/work/python/python/dist/src/python
Python 2.2a1 (#12, Aug 4 2001, 10:17:23)
[GCC egcs-2.91.66 19990314 (egcs-1.1.2 release)] on netbsd1
Type "help", "copyright", "credits" or "license" for more information.
>>> import socket
>>> socket.getnameinfo(('::1', 80, 0, 0), 0)
Program received signal SIGSEGV, Segmentation fault.
convertsimple (arg=0x80e43ac, p_format=0xbfbfcda4, p_va=0xbfbfcf80,
msgbuf=0xbfbfce68 "\af\027H Ç\021\b\b+\030H") at Python/getargs.c:501
501 *p = ival;
(gdb) bt
#0 convertsimple (arg=0x80e43ac, p_format=0xbfbfcda4, p_va=0xbfbfcf80,
msgbuf=0xbfbfce68 "\af\027H Ç\021\b\b+\030H") at Python/getargs.c:501
#1 0x806ab6c in convertitem (arg=0x80e43ac, p_format=0xbfbfcf74,
p_va=0xbfbfcf80, levels=0xbfbfcde8,
msgbuf=0xbfbfce68 "\af\027H Ç\021\b\b+\030H") at Python/getargs.c:351
#2 0x8068a72 in vgetargs1 (args=0x813d18c, format=0x481980b0 "i",
p_va=0xbfbfcf80, compat=0) at Python/getargs.c:197
#3 0x80686fd in PyArg_ParseTuple (args=0x813d18c, format=0x481980ac "si|ii")
at Python/getargs.c:52
#4 0x48194319 in PySocket_getnameinfo (self=0x0, args=0x811c3cc)
at /usr/home/itojun/work/python/python/dist/src/Modules/socketmodule.c:2430
#5 0x8059f35 in call_cfunction (func=0x81871cc, arg=0x811c3cc, kw=0x0)
at Python/ceval.c:3072
#6 0x805744d in eval_frame (f=0x80e7c0c) at Python/ceval.c:1912
#7 0x8058461 in PyEval_EvalCodeEx (co=0x80fbdc0, globals=0x80f2d0c,
locals=0x80f2d0c, args=0x0, argcount=0, kws=0x0, kwcount=0, defs=0x0,
defcount=0, closure=0x0) at Python/ceval.c:2517
#8 0x8059ea3 in PyEval_EvalCode (co=0x80fbdc0, globals=0x80f2d0c,
locals=0x80f2d0c) at Python/ceval.c:490
#9 0x8073f48 in run_node (n=0x80f5c00, filename=0x80b4975 "<stdin>",
globals=0x80f2d0c, locals=0x80f2d0c, flags=0xbfbfd65c)
at Python/pythonrun.c:1058
#10 0x8072a0e in PyRun_InteractiveOneFlags (fp=0x80dafd0,
filename=0x80b4975 "<stdin>", flags=0xbfbfd65c) at Python/pythonrun.c:578
#11 0x8073997 in PyRun_InteractiveLoopFlags (fp=0x80dafd0,
filename=0x80b4975 "<stdin>", flags=0xbfbfd65c) at Python/pythonrun.c:514
#12 0x8073802 in PyRun_AnyFileExFlags (fp=0x80dafd0,
filename=0x80b4975 "<stdin>", closeit=0, flags=0xbfbfd65c)
at Python/pythonrun.c:477
#13 0x8051da3 in Py_Main (argc=1, argv=0xbfbfd6b8) at Modules/main.c:332
#14 0x8051742 in main (argc=1, argv=0xbfbfd6b8) at Modules/python.c:10
#15 0x8051579 in ___start ()
(gdb) frame 1
#1 0x806ab6c in convertitem (arg=0x80e43ac, p_format=0xbfbfcf74,
p_va=0xbfbfcf80, levels=0xbfbfcde8,
msgbuf=0xbfbfce68 "\af\027H Ç\021\b\b+\030H") at Python/getargs.c:351
351 msg = convertsimple(arg, &format, p_va, msgbuf);
(gdb) print p_va
$1 = (va_list *) 0xbfbfcf80
(gdb) frame 2
#2 0x8068a72 in vgetargs1 (args=0x813d18c, format=0x481980b0 "i",
p_va=0xbfbfcf80, compat=0) at Python/getargs.c:197
197 msg = convertitem(PyTuple_GET_ITEM(args, i), &format, p_va,
(gdb) list
192 }
193
194 for (i = 0; i < len; i++) {
195 if (*format == '|')
196 format++;
197 msg = convertitem(PyTuple_GET_ITEM(args, i), &format, p_va,
198 levels, msgbuf);
199 if (msg) {
200 seterror(i+1, msg, levels, fname, message);
201 return 0;
(gdb) print format
$2 = 0x481980b0 "i"
(gdb) frame 3
#3 0x80686fd in PyArg_ParseTuple (args=0x813d18c, format=0x481980ac "si|ii")
at Python/getargs.c:52
52 retval = vgetargs1(args, format, &va, 0);
(gdb) list
47 {
48 int retval;
49 va_list va;
50
51 va_start(va, format);
52 retval = vgetargs1(args, format, &va, 0);
53 va_end(va);
54 return retval;
55 }
56
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