gnu_get_libc_version() returns bad number on Ubuntu 64 bits

[smartini]

BPO	4854
Nosy	@theller

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/theller'
closed_at = <Date 2009-01-06.03:41:25.906>
created_at = <Date 2009-01-06.01:18:44.776>
labels = ['ctypes', 'invalid']
title = 'gnu_get_libc_version() returns bad number on Ubuntu 64 bits'
updated_at = <Date 2009-01-06.03:41:25.905>
user = 'https://bugs.python.org/smartini'

bugs.python.org fields:

activity = <Date 2009-01-06.03:41:25.905>
actor = 'benjamin.peterson'
assignee = 'theller'
closed = True
closed_date = <Date 2009-01-06.03:41:25.906>
closer = 'benjamin.peterson'
components = ['ctypes']
creation = <Date 2009-01-06.01:18:44.776>
creator = 'smartini'
dependencies = []
files = []
hgrepos = []
issue_num = 4854
keywords = []
message_count = 2.0
messages = ['79223', '79226']
nosy_count = 2.0
nosy_names = ['theller', 'smartini']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue4854'
versions = ['Python 2.5']

[smartini]

System: Ubuntu 8.10 Desktop AMD 64
Processor: Intel Core i7
Python: 2.5.2

While raw C code:

#include <gnu/libc-version.h>
#include <stdlib.h>
#include <stdio.h>

int main(int argc, char *argv[]) {
  printf("GNU libc version: %s\n", gnu_get_libc_version());
  return 0;
}

prints:
GNU libc version: 2.8.90

Python ctypes seems to bug:
$ python
Python 2.5.2 (r252:60911, Oct  5 2008, 19:29:17) 
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys, ctypes, ctypes.util
>>> sys.version
'2.5.2 (r252:60911, Oct  5 2008, 19:29:17) \n[GCC 4.3.2]'
>>> sys.platform
'linux2'
>>> LIBC = ctypes.cdll.LoadLibrary(ctypes.util.find_library('c'))
>>> LIBC
<CDLL 'libc.so.6', handle 7f6d83122958 at 7f6d82fe8210>
>>> LIBC.gnu_get_libc_version()
-2109473701

[smartini]

Ooops, my mistake, there is nothing wrong, this report can be closed, sorry.