socket module in 2.7.4 raises error instead of gaierror in 2.7.3

[doko42]

BPO	17579
Nosy	@warsaw, @doko42, @pitrou, @benjaminp

^{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 = None
closed_at = <Date 2013-04-02.18:27:47.241>
created_at = <Date 2013-03-30.12:26:50.704>
labels = ['invalid', 'library', 'release-blocker']
title = 'socket module in 2.7.4 raises error instead of gaierror in 2.7.3'
updated_at = <Date 2013-04-02.18:27:47.240>
user = 'https://github.com/doko42'

bugs.python.org fields:

activity = <Date 2013-04-02.18:27:47.240>
actor = 'barry'
assignee = 'none'
closed = True
closed_date = <Date 2013-04-02.18:27:47.241>
closer = 'barry'
components = ['Library (Lib)']
creation = <Date 2013-03-30.12:26:50.704>
creator = 'doko'
dependencies = []
files = []
hgrepos = []
issue_num = 17579
keywords = []
message_count = 5.0
messages = ['185553', '185559', '185560', '185561', '185853']
nosy_count = 4.0
nosy_names = ['barry', 'doko', 'pitrou', 'benjamin.peterson']
pr_nums = []
priority = 'release blocker'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue17579'
versions = ['Python 2.7']

[doko42]

forwarded from https://launchpad.net/bugs/+bug/1154599

this seems to be changed behavior in 2.7.4. is it intended?

$ cat lookup.py 
#!/usr/bin/python
import sys, socket
names = ["slashdot.org", "foooooooooowhizzzzzzzz.com"]
if len(sys.argv) > 1:
   names = sys.argv[1:]
for iname in names:
    try:
        result = socket.getaddrinfo(iname, None, 0, 0, socket.SOCK_STREAM,
                                    socket.AI_CANONNAME)
        for (fam, stype, proto, cname, sockaddr) in result:
            sys.stdout.write("cname=%s, sockaddr=%s\n" % (cname, sockaddr))
    except socket.gaierror as error:
        sys.stderr.write("%s failed lookup" % iname)

$ python lookup.py # 2.7.3
cname=slashdot.org, sockaddr=('216.34.181.45', 0)
foooooooooowhizzzzzzzz.com failed lookup

$ python lookup.py # 2.7.4
cname=slashdot.org, sockaddr=('216.34.181.45', 0)
Traceback (most recent call last):
  File "lookup.py", line 9, in <module>
    socket.AI_CANONNAME)
socket.error: [Errno 2] No such file or directory

[pitrou]

Not really intended I think. Can you try to bisect to find out the responsible changeset?

[pitrou]

(by the way, I can't reproduce here)

[benjaminp]

I can't reproduce it.

$ ./python lookup.py 
slashdot.org failed lookup
foooooooooowhizzzzzzzz.com failed lookup

Are you sure it's not some Ubuntu/Debian patch?

[warsaw]

Okay, so this is not a Python problem, but an Ubuntu problem. It's also not a problem with Ubuntu's version of Python. I can reproduce it on Ubuntu 13.04 with hg trunk, but not Debian Wheezy with hg trunk.

Closing as invalid and will investigate further in Ubuntu.