Further adventures in the land of 64-bit linux

The next problem in the land of 64bit linux seems to be test_grp:

  [ 23:15 ] - ./python -u ../python/dist/src/Lib/test/regrtest.py -v -s
  test_grp
  test_getgrgid (test.test_grp.GroupDatabaseTestCase) ... zsh: segmentation fault  ./python -u
  ../python/dist/src/Lib/test/regrtest.py -v -s

or, shorter:

  [ 23:18 ] - ./python -u
  Python 2.3a0 (#3, Sep 12 2002, 19:11:35) 
  [GCC egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  >>> import grp
  >>> g = grp.getgrall()
  zsh: segmentation fault  ./python -u

or, in gdb:

>>> import grp
>>> grp.getgrall()

Program received signal SIGSEGV, Segmentation fault.
strlen () at ../sysdeps/alpha/strlen.S:45
45      ../sysdeps/alpha/strlen.S: Filen eller katalogen finns inte.
Current language:  auto; currently asm
(gdb) bt
#0  strlen () at ../sysdeps/alpha/strlen.S:45
#1  0x12004624c in PyString_FromString (str=0x0)
    at ../python/dist/src/Objects/stringobject.c:111
#2  0x20000d652ac in mkgrent (p=0x200008b31b0)
    at /mp/slaskdisk/tmp/quest/python/dist/src/Modules/grpmodule.c:61
#3  0x20000d653f8 in grp_getgrall (self=0x0, args=0x20000097325)
    at /mp/slaskdisk/tmp/quest/python/dist/src/Modules/grpmodule.c:115
#4  0x1200d9328 in PyCFunction_Call (func=0x20000093fd0, arg=0x20000025048, 
    kw=0x0) at ../python/dist/src/Objects/methodobject.c:101
#5  0x120082cb4 in call_function (pp_stack=0x11ffff530, oparg=619301)
    at ../python/dist/src/Python/ceval.c:3228
[...]

(gdb) frame 2
#2  0x20000d652ac in mkgrent (p=0x200008b31b0)
    at /mp/slaskdisk/tmp/quest/python/dist/src/Modules/grpmodule.c:61
61          SET(setIndex++, PyString_FromString(p->gr_passwd));
Current language:  auto; currently c
(gdb) print member
$1 = (char **) 0x1202921b8
(gdb) print p
$2 = (struct group *) 0x200008b31b0
(gdb) print p->gr_passwd
$3 = 0x0
(gdb) ptype p
type = struct group {
    char *gr_name;
    char *gr_passwd;
    __gid_t gr_gid;
    char **gr_mem;
} *
(gdb) frame 1
#1  0x12004624c in PyString_FromString (str=0x0)
    at ../python/dist/src/Objects/stringobject.c:111
111             size = strlen(str);
(gdb) list
106     {
107             register size_t size;
108             register PyStringObject *op;
109     
110             assert(str != NULL);
111             size = strlen(str);
112             if (size > INT_MAX) {
113                     PyErr_SetString(PyExc_OverflowError,
114                             "string is too long for a Python string");
115                     return NULL;

If I understand things correctly, this means that the previous line in
stringobject.c (110) somehow fails to do its job, or we would have
gotten an assert error. Is 0x0 NULL on linux/alpha?

-- 
Anders "Quest" Qvist

"We've all heard that a million monkeys banging on a million typewriters
will eventually reproduce the entire works of Shakespeare. Now, thanks 
to the Internet, we know this is not true." -- Robert Wilensky