[issue13312] test_time fails: strftime('%Y', y) for negative year

[Gregory P. Smith]

Gregory P. Smith  added the comment:

OverflowError is now raised for negative values that would trigger a problem 
and the unittest has been updated to test this.

--
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status: open -> closed

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[issue13312] test_time fails: strftime('%Y', y) for negative year

[miss-islington]

miss-islington  added the comment:


New changeset d5f017bbd65f37ac53fd3c6c439a53155eef2475 by Miss Islington (bot) 
in branch '3.7':
bpo-13312: Avoid int underflow in time year. (GH-8912)
https://github.com/python/cpython/commit/d5f017bbd65f37ac53fd3c6c439a53155eef2475


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[issue13312] test_time fails: strftime('%Y', y) for negative year

[miss-islington]

miss-islington  added the comment:


New changeset c47acc2bb1d0a3fb6dda14ced958d272fb2821a6 by Miss Islington (bot) 
in branch '3.6':
bpo-13312: Avoid int underflow in time year. (GH-8912)
https://github.com/python/cpython/commit/c47acc2bb1d0a3fb6dda14ced958d272fb2821a6


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[issue34494] simple "sequence" class ignoring __len__

[Tyler Reddy]

New submission from Tyler Reddy :

Downstream in NumPy we've noticed that a "sequence" object defined as below 
will hang (infinite __getitem__ calls) if we try to turn it into an array. The 
same holds in CPython for converting it to a list:

class OneList:

def __len__(self):
# this won't be checked by
# PySequence_Fast and several
# over C API calls
return 1

def __getitem__(self, x):
# called indefinitely by
# i.e., PySequence_Fast
return 1

Just to confirm -- this is intentional / desired behavior:

list(OneList()) should hang in CPython?

related: 
https://github.com/numpy/numpy/issues/8912
https://github.com/numpy/numpy/pull/11815
https://stackoverflow.com/a/43566241/2942522

--
messages: 324037
nosy: treddy
priority: normal
severity: normal
status: open
title: simple "sequence" class ignoring __len__
type: behavior
versions: Python 3.6

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[issue34491] _bsddb.c: Missing Py_DECREF() in DB_join()

[Xiang Zhang]

Change by Xiang Zhang :


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[issue34491] _bsddb.c: Missing Py_DECREF() in DB_join()

[Xiang Zhang]

New submission from Xiang Zhang :


New changeset 032e85f3fb6d2e6668d4e860b40525ed6cb8dd69 by Xiang Zhang (Zackery 
Spytz) in branch '2.7':
bpo-34491: Add missing Py_DECREF() in _bsddb's DB_join() (GH-8909)
https://github.com/python/cpython/commit/032e85f3fb6d2e6668d4e860b40525ed6cb8dd69


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[issue34442] zlib module not built on windows

[Terry J. Reedy]

Terry J. Reedy  added the comment:

What precisely does 'running' mean, so that we can try to reproduce?

python -m test.test_zipfile

Runs 208/207 tests in about a minute on the repository debug builds without 
failure for both 3.8 and 3.7.

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[issue33550] Sigpipe handling issue should be documented

[Mariatta Wijaya]

Mariatta Wijaya  added the comment:

Thanks!

--
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[issue33550] Sigpipe handling issue should be documented

[miss-islington]

Change by miss-islington :


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[issue33550] Sigpipe handling issue should be documented

[Mariatta Wijaya]

Mariatta Wijaya  added the comment:


New changeset 7b0ed43af55c1e2844aa0ccd5e088b2ddd38dbdb by Mariatta (Miss 
Islington (bot)) in branch '3.7':
bpo-33550: Warn not to set SIGPIPE to SIG_DFL (GH-6773)
https://github.com/python/cpython/commit/7b0ed43af55c1e2844aa0ccd5e088b2ddd38dbdb


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[issue34429] On Windows tempfile.TemporaryFile behaves like NamedTemporaryFile

[Terry J. Reedy]

Terry J. Reedy  added the comment:

3.4 and 3.5 only get security fixes.

Anyone preparing PR should check that behavior and doc is same on master; I 
just assumed in setting Versions header.

In the proposed text, it is not clear that 'non' applies to cygwin also.  
Instead: "On platforms that are neither Posix nor Cygwin, ..."
Or "On non-Posix, non-Cygwin platforms, ..."

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[issue34426] "__lltrace__" seems to be wrong , "__ltrace__" is correct in Misc/SpecialBuilds.txt

[Mariatta Wijaya]

Mariatta Wijaya  added the comment:


New changeset b26fcd6e22b7c150318d555f67b009cedcf5c797 by Mariatta (Miss 
Islington (bot)) in branch '3.6':
bpo-34426: fix typo (__lltrace__ -> __ltrace__) (GH-8822)
https://github.com/python/cpython/commit/b26fcd6e22b7c150318d555f67b009cedcf5c797


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[issue34426] "__lltrace__" seems to be wrong , "__ltrace__" is correct in Misc/SpecialBuilds.txt

[miss-islington]

miss-islington  added the comment:


New changeset 0dc75f04575a6bfb2b072f62e5233444aea23e89 by Miss Islington (bot) 
in branch '3.7':
bpo-34426: fix typo (__lltrace__ -> __ltrace__) (GH-8822)
https://github.com/python/cpython/commit/0dc75f04575a6bfb2b072f62e5233444aea23e89


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[issue34428] tokenize

[Terry J. Reedy]

Terry J. Reedy  added the comment:

Luke: If and when you have legal code that fails when run with purely with 
CPython, you can re-open or try an new issue.

--
nosy: +serhiy.storchaka, terry.reedy
resolution:  -> third party
stage:  -> resolved
status: open -> closed
versions: +Python 3.8 -Python 3.5

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[issue34426] "__lltrace__" seems to be wrong , "__ltrace__" is correct in Misc/SpecialBuilds.txt

[Mariatta Wijaya]

Mariatta Wijaya  added the comment:

Thanks!

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[issue34426] "__lltrace__" seems to be wrong , "__ltrace__" is correct in Misc/SpecialBuilds.txt

[miss-islington]

Change by miss-islington :


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[issue34426] "__lltrace__" seems to be wrong , "__ltrace__" is correct in Misc/SpecialBuilds.txt

[miss-islington]

Change by miss-islington :


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[issue34426] "__lltrace__" seems to be wrong , "__ltrace__" is correct in Misc/SpecialBuilds.txt

[Mariatta Wijaya]

Mariatta Wijaya  added the comment:


New changeset 09efe49c07e2d5f93b415ead757c87e20cc0026f by Mariatta (Danish 
Prakash) in branch 'master':
bpo-34426: fix typo (__lltrace__ -> __ltrace__) (GH-8822)
https://github.com/python/cpython/commit/09efe49c07e2d5f93b415ead757c87e20cc0026f


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[issue34427] calling MutableSequence.extend on self produces infinite loop

[Terry J. Reedy]

Change by Terry J. Reedy :


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[issue34426] "__lltrace__" seems to be wrong , "__ltrace__" is correct in Misc/SpecialBuilds.txt

[Terry J. Reedy]

Change by Terry J. Reedy :


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[issue13312] test_time fails: strftime('%Y', y) for negative year

[miss-islington]

Change by miss-islington :


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[issue13312] test_time fails: strftime('%Y', y) for negative year

[miss-islington]

Change by miss-islington :


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[issue13312] test_time fails: strftime('%Y', y) for negative year

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset 76be0f8b7dbe649ad4821144461800ffb0d0 by Gregory P. Smith in 
branch 'master':
bpo-13312: Avoid int underflow in time year. (GH-8912)
https://github.com/python/cpython/commit/76be0f8b7dbe649ad4821144461800ffb0d0


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[issue33569] dataclasses InitVar does not maintain any type info

[Eric V. Smith]

Eric V. Smith  added the comment:

test message, please ignore

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[issue31844] HTMLParser: undocumented not implemented method

[Ezio Melotti]

Change by Ezio Melotti :


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[issue34453] ipaddress module accepts some strange IPv6 addresses that it shouldn't

[Michał Radwański]

Michał Radwański  added the comment:

According to the RFC ( https://tools.ietf.org/html/rfc4291#section-2.2 ), last 
four bytes can be an address in the format of IPv4 address. The latter doesn't 
specify whether leading zeros are permitted or not. For illustration let's look 
at the implementation of the POSIX function `inet_aton` from Fedora 28, as 
documented by manual:

> In  all  of the above forms, components of the dotted address can be 
> specified in decimal, octal (with a leading 0), or hexadecimal, with a 
> leading 0X).

But notice that if you prefix a 0 with 0, the value stays the same, so it 
doesn't hurt not to raise errors if given either of 

::::::00.00.00.00
::::::000.000.000.000

If however you try

::::::000.000.010.000

then the address is ambiguous, so appropriately you get 

AddressValueError: Ambiguous (octal/decimal) value in '010' not permitted in 
'000.000.010.000' in '::::::000.000.010.000'


I believe the issue is handled correctly.

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[issue13312] test_time fails: strftime('%Y', y) for negative year

[Gregory P. Smith]

Change by Gregory P. Smith :


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[issue13312] test_time fails: strftime('%Y', y) for negative year

[Gregory P. Smith]

Change by Gregory P. Smith :


--
assignee:  -> gregory.p.smith
nosy: +gregory.p.smith
versions: +Python 3.6, Python 3.7, Python 3.8 -Python 3.5

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[issue1621] Do not assume signed integer overflow behavior

[Gregory P. Smith]

Change by Gregory P. Smith :


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[issue34492] Python/coreconfig.c: Missing NULL check in _Py_wstrlist_copy()

[STINNER Victor]

STINNER Victor  added the comment:


New changeset eb746dbae8b320758ee08f811316d7f283435cc0 by Victor Stinner 
(Alexey Izbyshev) in branch 'master':
bpo-34492: Python/coreconfig.c: Fix _Py_wstrlist_copy() (GH-8910)
https://github.com/python/cpython/commit/eb746dbae8b320758ee08f811316d7f283435cc0


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[issue34493] Objects/genobject.c: Missing NULL check in compute_cr_origin()

[Alexey Izbyshev]

Change by Alexey Izbyshev :


--
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[issue34493] Objects/genobject.c: Missing NULL check in compute_cr_origin()

[Alexey Izbyshev]

New submission from Alexey Izbyshev :

The return value of PyTuple_New() is not checked for NULL at 
https://github.com/python/cpython/blob/ef8861c112ed1dac9351958c121bc24ca4ecdb08/Objects/genobject.c#L1130
 and then dereferenced.

--
components: Interpreter Core
messages: 324022
nosy: berker.peksag, izbyshev, njs, serhiy.storchaka
priority: normal
severity: normal
status: open
title: Objects/genobject.c: Missing NULL check in compute_cr_origin()
type: behavior
versions: Python 3.7, Python 3.8

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[issue34492] Python/coreconfig.c: Missing NULL check in _Py_wstrlist_copy()

[Alexey Izbyshev]

Change by Alexey Izbyshev :


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[issue34492] Python/coreconfig.c: Missing NULL check in _Py_wstrlist_copy()

[Alexey Izbyshev]

New submission from Alexey Izbyshev :

The return value of PyMem_RawMalloc() is not checked for NULL at 
https://github.com/python/cpython/blob/ef8861c112ed1dac9351958c121bc24ca4ecdb08/Python/coreconfig.c#L71.

Reported by Svace static analyzer.

--
components: Interpreter Core
messages: 324021
nosy: berker.peksag, izbyshev, serhiy.storchaka, vstinner
priority: normal
severity: normal
status: open
title: Python/coreconfig.c: Missing NULL check in _Py_wstrlist_copy()
type: behavior
versions: Python 3.8

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[issue6531] atexit_callfuncs() crashing within Py_Finalize() when using multiple interpreters.

[Eric Snow]

Change by Eric Snow :


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[issue34453] ipaddress module accepts some strange IPv6 addresses that it shouldn't

[Luke Kenneth Casson Leighton]

Luke Kenneth Casson Leighton  added the comment:

hi prudvi: i have absolutely no idea.  i am simply running test
validators online, which show and confirm that they are correctly
INVALID.  a google search shows a number of IPv6 validators:
https://www.google.co.uk/search?q=ipv6+address+validator

i have absolutely no actual knowledge of what constitutes a valid IPv6
address or not, nor know of any "official" resources.

all i know is: consensus tends to agree that these two addresses
are accepted by the python ipaddress module when they should not.

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[issue34491] _bsddb.c: Missing Py_DECREF() in DB_join()

[Zackery Spytz]

Change by Zackery Spytz :


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[issue34491] _bsddb.c: Missing Py_DECREF() in DB_join()

[Zackery Spytz]

Change by Zackery Spytz :


--
components: Extension Modules
nosy: ZackerySpytz
priority: normal
severity: normal
status: open
title: _bsddb.c: Missing Py_DECREF() in DB_join()
type: resource usage
versions: Python 2.7

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[issue34461] Availability of parsers in etree initializer

[Stefan Behnel]

Stefan Behnel  added the comment:

The normal way to use ElementTree is to import the ElementTree module from the 
xml.etree package. Why do you think that needs to change? And why do you want 
to enforce an import of all modules before you even know which of them the 
users actually wants?

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[issue34465] ipaddress should accept bytearray in addition to bytes

[Prudvi RajKumar Maddala]

Change by Prudvi RajKumar Maddala :


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[issue34490] transport.get_extra_info('sockname') of test_asyncio fails on AIX

[Michael Felt]

Change by Michael Felt :


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[issue34490] transport.get_extra_info('sockname') of test_asyncio fails on AIX

[Michael Felt]

Change by Michael Felt :


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[issue34490] transport.get_extra_info('sockname') of test_asyncio fails on AIX

[Michael Felt]

New submission from Michael Felt :

Inspired by msg211764, issue20682

In short: 
   For address family of AF_UNIX or AF_UNIX_CCSID, getsockname() returns 0 if 
issued before a bind(). The address length is 0. This is always the case for 
sockets created by socketpair().

That is at least one possible explanation I found.

Have tested on AIX 6.1 and AIX 7.1 - transport.get_extra_info('sockname') 
returns None

--
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messages: 324017
nosy: Michael.Felt
priority: normal
severity: normal
status: open
title: transport.get_extra_info('sockname') of test_asyncio fails on AIX
type: behavior
versions: Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

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[issue20682] test_create_ssl_unix_connection() of test_asyncio failed on "x86 Tiger 3.x"

[Michael Felt]

Michael Felt  added the comment:

Ah, leave closed. I'll make a new issue, and reference this one. Sorry for the 
noise here.

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[issue20682] test_create_ssl_unix_connection() of test_asyncio failed on "x86 Tiger 3.x"

[Michael Felt]

Michael Felt  added the comment:

Inspired by msg211764 I made a PR - which I hope is okay to add here.

If not, a new issue and PR can be made later.

In short: 
   For address family of AF_UNIX or AF_UNIX_CCSID, getsockname() returns 0 if 
issued before a bind(). The address length is 0. This is always the case for 
sockets created by socketpair().

That is at least one possible explanation I found.

Have testewd on AIX 6.1 and AIX 7.1 - on AF_UNIX family getsockname() returns 
'None' (i.e., transport.get_extra_info('sockname') returns None)

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[issue34453] ipaddress module accepts some strange IPv6 addresses that it shouldn't

[Prudvi RajKumar Maddala]

Prudvi RajKumar Maddala  added the comment:

Hi lkcl, can you help me understand why exactly the below IPv6 addresses are 
invalid?
('::::::00.00.00.00', False)
('::::::000.000.000.000', False)

I pulled the above addresses from your git testcase.

But, below 2 IPv6 addresses are given as valid
('::::::123.123.123.123', True)
('::::::123.123.123.123', True)

I don't see any difference between both. Both of them have IPv4 styled 
suffixes. According to the code, they are getting converted at runtime. Can you 
please clarify? 

Thanks

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[issue34489] subprocess: execution of batch-files (.cmd/.bat) is vulnerable in python for windows / insufficient escape

[Sergey G. Brester]

New submission from Sergey G. Brester :

There is a vulnerability "insufficient escape of special chars for quoting of 
arguments by exec process" for python-language, if executing windows 
batch-files (bat/cmd).

### What version of python is affected?
All

### Does this issue reproduce with the latest master?
Yes

### What did you do?
Execution of batch-file using `subprocess` module with arguments containing 
some special meta-characters.

A recipe for reproducing the error as well as more extensive PoC with 
additional info (and more lang's affected also):
- https://github.com/sebres/PoC/blob/master/SB-0D-001-win-exec/README.md
A complete runnable program:
- https://github.com/sebres/PoC/blob/master/SB-0D-001-win-exec/test-dump-inv.py

 A simple example:
```diff
 # invoke exe-file:
 >>> import subprocess
 >>> subprocess.call(['test-dump.exe', 'test'])
+`test-dump.exe´ `test´
 # invoke cmd-file:
 >>> subprocess.call(['test-dump.CMD', 'test'])
-`test-dump.exe´ `test´my_domain\sebres
```
For more "broken" cases, see the result of my test-suite:
- 
https://github.com/sebres/PoC/blob/master/SB-0D-001-win-exec/results/python.diff

### What did you expect to see?
Arguments are escaped/quoted properly.

### What did you see instead?
Arguments are insufficient escaped/quoted, so it is vulnerable currently.

### Solution:

For possible solution see the github-PR#8906:
- https://github.com/python/cpython/pull/8906 
For algorithm description:
- https://github.com/sebres/PoC/blob/master/SB-0D-001-win-exec/SOLUTION.md
resp. how it was fixed in TCL (C-code):
- https://core.tcl-lang.org/tcl/vdiff?from=core-8-5-branch=0-day-21b0629c81 
(see the function `BuildCommandLine`)

### Possible similar issues:
bpo-33515

--
components: Library (Lib), Windows
messages: 324013
nosy: paul.moore, sebres, steve.dower, tim.golden, zach.ware
priority: normal
pull_requests: 8376
severity: normal
status: open
title: subprocess: execution of batch-files (.cmd/.bat) is vulnerable in python 
for windows / insufficient escape
type: security
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

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[issue33515] subprocess.Popen on a Windows batch file always acts as if shell=True

[Sergey G. Brester]

Change by Sergey G. Brester :


--
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pull_requests: +8375
stage: needs patch -> patch review

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[issue34470] windows msi in headless mode fails to install Script directory on reinstall if the python folder was deleted but not uninstalled

[Christopher Knorowski]

Christopher Knorowski  added the comment:

This also happens in python 3.7. following a similar procedure.

On Wed, Aug 22, 2018 at 9:01 PM Zachary Ware  wrote:

>
> Zachary Ware  added the comment:
>
> Python 2.7 is nearing end-of-life, its installer scheme is no longer used
> on any other branch, and the maintainer of that installer retired some
> years ago.  If you provide a patch, we can take a look and possibly merge
> it for you, but it's unlikely that this will be picked up by a maintainer
> without a patch to review.
>
> If you would like to try patching it, all the necessary files should be in
> 2.7/Tools/msi, and you can feel free to ask questions here if you get
> stuck.  Good luck!
>
> --
> components: +Windows
> nosy: +paul.moore, steve.dower, tim.golden, zach.ware
> priority: normal -> low
> type: compile error -> behavior
>
> ___
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> 
> ___
>

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[issue34448] incomplete/missing message from configure.ac for usable wchar_t

[Berker Peksag]

Change by Berker Peksag :


--
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stage: patch review -> resolved
status: open -> closed

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[issue34488] improve performance of BytesIO.writelines() by avoiding creation of unused PyLongs

[Sergey Fedoseev]

Change by Sergey Fedoseev :


--
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pull_requests: +8374
stage:  -> patch review

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[issue34488] improve performance of BytesIO.writelines() by avoiding creation of unused PyLongs

[Sergey Fedoseev]

New submission from Sergey Fedoseev :

Currently BytesIO.writelines() uses BytesIO.write() which returns number of 
written bytes as Python ints, but these ints are not used by 
BytesIO.writelines(), so avoiding creation of these ints can improve 
performance of BytesIO.writelines() especially for a large number of small 
lines.

Benchmarks:

python -m perf timeit --compare-to ~/tmp/cpython-master-venv/bin/python -s 
"from io import BytesIO; lines = [b'']*1;" "BytesIO().writelines(lines)"
  
/home/sergey/tmp/cpython-master-venv/bin/python: . 153 us 
+- 3 us
/home/sergey/tmp/cpython-venv/bin/python: . 126 us +- 4 us

Mean +- std dev: [/home/sergey/tmp/cpython-master-venv/bin/python] 153 us +- 3 
us -> [/home/sergey/tmp/cpython-venv/bin/python] 126 us +- 4 us: 1.22x faster 
(-18%)

python -m perf timeit --compare-to ~/tmp/cpython-master-venv/bin/python -s 
"from io import BytesIO; lines = [b'b']*1;" "BytesIO().writelines(lines)"
/home/sergey/tmp/cpython-master-venv/bin/python: . 164 us 
+- 2 us
/home/sergey/tmp/cpython-venv/bin/python: . 142 us +- 1 us

Mean +- std dev: [/home/sergey/tmp/cpython-master-venv/bin/python] 164 us +- 2 
us -> [/home/sergey/tmp/cpython-venv/bin/python] 142 us +- 1 us: 1.16x faster 
(-13%)

python -m perf timeit --compare-to ~/tmp/cpython-master-venv/bin/python -s 
"from io import BytesIO; lines = [b'b'*10]*1;" "BytesIO().writelines(lines)"
/home/sergey/tmp/cpython-master-venv/bin/python: . 387 us 
+- 6 us
/home/sergey/tmp/cpython-venv/bin/python: . 365 us +- 8 us

Mean +- std dev: [/home/sergey/tmp/cpython-master-venv/bin/python] 387 us +- 6 
us -> [/home/sergey/tmp/cpython-venv/bin/python] 365 us +- 8 us: 1.06x faster 
(-5%)

python -m perf timeit --compare-to ~/tmp/cpython-master-venv/bin/python -s 
"from io import BytesIO; lines = [b'b'*100]*1;" 
"BytesIO().writelines(lines)"   
 
/home/sergey/tmp/cpython-master-venv/bin/python: . 319 us 
+- 5 us
/home/sergey/tmp/cpython-venv/bin/python: . 305 us +- 16 us

Mean +- std dev: [/home/sergey/tmp/cpython-master-venv/bin/python] 319 us +- 5 
us -> [/home/sergey/tmp/cpython-venv/bin/python] 305 us +- 16 us: 1.04x faster 
(-4%)

python -m perf timeit --compare-to ~/tmp/cpython-master-venv/bin/python -s 
"from io import BytesIO; lines = [b'b'*1000]*1;" 
"BytesIO().writelines(lines)"
/home/sergey/tmp/cpython-master-venv/bin/python: . 1.13 ms 
+- 0.02 ms
/home/sergey/tmp/cpython-venv/bin/python: . 988 us +- 88 us

Mean +- std dev: [/home/sergey/tmp/cpython-master-venv/bin/python] 1.13 ms +- 
0.02 ms -> [/home/sergey/tmp/cpython-venv/bin/python] 988 us +- 88 us: 1.14x 
faster (-12%)

python -m perf timeit --compare-to ~/tmp/cpython-master-venv/bin/python -s 
"from io import BytesIO; lines = [b'b'*1]*1;" 
"BytesIO().writelines(lines)"
/home/sergey/tmp/cpython-master-venv/bin/python: . 38.7 ms 
+- 0.1 ms
/home/sergey/tmp/cpython-venv/bin/python: . 38.2 ms +- 0.1 
ms

Mean +- std dev: [/home/sergey/tmp/cpython-master-venv/bin/python] 38.7 ms +- 
0.1 ms -> [/home/sergey/tmp/cpython-venv/bin/python] 38.2 ms +- 0.1 ms: 1.01x 
faster (-1%)

--
components: Extension Modules
messages: 324011
nosy: sir-sigurd
priority: normal
severity: normal
status: open
title: improve performance of BytesIO.writelines() by avoiding creation of 
unused PyLongs
type: performance
versions: Python 3.8

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[issue34448] incomplete/missing message from configure.ac for usable wchar_t

[miss-islington]

miss-islington  added the comment:


New changeset 4973f767891e8eb14925a58313085e14cf6ea621 by Miss Islington (bot) 
in branch '3.7':
bpo-34448: Improve output of usable wchar_t check (GH-8846)
https://github.com/python/cpython/commit/4973f767891e8eb14925a58313085e14cf6ea621


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[issue31861] add aiter() and anext() functions to operator module

[Joshua Bronson]

Joshua Bronson  added the comment:

Interesting, thanks Yury!

I only saw the discussion here which implied these wouldn't go directly into 
builtins for 3.8 (and I searched here and in GitHub, and couldn't find the PR 
you mentioned either), so I'm curious if that was tracked somewhere. It'd be 
unfortunate if the work I did on that PR couldn't be used, but I'd be even 
happier to have these as builtins.

Thanks again for reviewing when you're back, and have a wonderful vacation in 
the meantime!

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[issue34448] incomplete/missing message from configure.ac for usable wchar_t

[miss-islington]

Change by miss-islington :


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[issue34448] incomplete/missing message from configure.ac for usable wchar_t

[Berker Peksag]

Berker Peksag  added the comment:


New changeset 3738fadc670274ecc4649f51b52a93602820a375 by Berker Peksag 
(Michael Osipov) in branch 'master':
bpo-34448: Improve output of usable wchar_t check (GH-8846)
https://github.com/python/cpython/commit/3738fadc670274ecc4649f51b52a93602820a375


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[issue34456] pickle: Missing NULL check in save_global()

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

We don't bother to fix low probably bugs in 2.7 if the code is too different 
from 3.x. But if you create a PR it will be merged. Seems this should be a 
separate issue.

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[issue34471] _datetime: Missing NULL check in tzinfo_from_isoformat_results()

[miss-islington]

miss-islington  added the comment:


New changeset c7f543520161b895796a571881da74e805d0b1eb by Miss Islington (bot) 
in branch '3.7':
closes bpo-34471: _datetime: Add missing NULL check to 
tzinfo_from_isoformat_results. (GH-8869)
https://github.com/python/cpython/commit/c7f543520161b895796a571881da74e805d0b1eb


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[issue34471] _datetime: Missing NULL check in tzinfo_from_isoformat_results()

[miss-islington]

Change by miss-islington :


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[issue34471] _datetime: Missing NULL check in tzinfo_from_isoformat_results()

[Benjamin Peterson]

Benjamin Peterson  added the comment:


New changeset 498845368ff0f6238750ab1d443e7cf4ec98ccd2 by Benjamin Peterson 
(Alexey Izbyshev) in branch 'master':
closes bpo-34471: _datetime: Add missing NULL check to 
tzinfo_from_isoformat_results. (GH-8869)
https://github.com/python/cpython/commit/498845368ff0f6238750ab1d443e7cf4ec98ccd2


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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue31861] add aiter() and anext() functions to operator module

[Guido van Rossum]

Change by Guido van Rossum :


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[issue6700] inspect.getsource() returns incorrect source lines at the module level

[miss-islington]

miss-islington  added the comment:


New changeset 3e6020c4ddf7acea91efdae770320c6ce06b93db by Miss Islington (bot) 
in branch '3.7':
bpo-6700: Fix inspect.getsourcelines for module level frames/tracebacks 
(GH-8864)
https://github.com/python/cpython/commit/3e6020c4ddf7acea91efdae770320c6ce06b93db


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[issue34487] enum _sunder_ names mix metaclass and enum class attributes

[Gerrit Holl]

New submission from Gerrit Holl :

In the [`enum` 
module](https://docs.python.org/3/library/enum.html#supported-sunder-names) 
documentation, some of the `_sunder_` names are on `EnumMeta`, whereas others 
are on the produced `Enum` class:

> 8.13.15.3.2. Supported `_sunder_` names

> * `_name_` – name of the member
> * `_value_` – value of the member; can be set / modified in __new__
> * `_missing_` – a lookup function used when a value is not found; may be 
> overridden
> * `_ignore_` – a list of names, either as a list() or a str(), that will not 
> be transformed into members, and will be removed from the final class
> * `_order_` – used in Python 2/3 code to ensure member order is consistent 
> (class attribute, removed during class creation)
> * `_generate_next_value_` – used by the Functional API and by auto to get an 
> appropriate value for an enum member; may be overridden

Experimentally, it appears `_name_` and `_value_` are on the `Enum` class, 
whereas the others are all on the `EnumMeta` class:

In [272]: class Test(enum.Enum): a = 0

In [273]: Test.a._name_
Out[273]: 'a'

In [274]: Test._name
---
AttributeErrorTraceback (most recent call last)
 in ()
> 1 Test._name

/group_workspaces/cems2/fiduceo/Users/gholl/anaconda3/envs/FCDR37a/lib/python3.7/enum.py
 in __getattr__(cls, name)
344 return cls._member_map_[name]
345 except KeyError:
--> 346 raise AttributeError(name) from None
347 
348 def __getitem__(cls, name):

AttributeError: _name

In [275]: Test.a._value_
Out[275]: 0

In [276]: Test._value
---
AttributeErrorTraceback (most recent call last)
 in ()
> 1 Test._value

/group_workspaces/cems2/fiduceo/Users/gholl/anaconda3/envs/FCDR37a/lib/python3.7/enum.py
 in __getattr__(cls, name)
344 return cls._member_map_[name]
345 except KeyError:
--> 346 raise AttributeError(name) from None
347 
348 def __getitem__(cls, name):

AttributeError: _value

In [277]: Test.a._missing_
Out[277]: >

In [278]: Test._missing_
Out[278]: >


This is not clear from the documentation.

--
assignee: docs@python
components: Documentation
messages: 324003
nosy: Gerrit.Holl, docs@python
priority: normal
severity: normal
status: open
title: enum _sunder_ names mix metaclass and enum class attributes
versions: Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

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[issue6700] inspect.getsource() returns incorrect source lines at the module level

[miss-islington]

miss-islington  added the comment:


New changeset 0e707b4c6a47086d8e723c7a010c3f5cf8296946 by Miss Islington (bot) 
in branch '3.6':
bpo-6700: Fix inspect.getsourcelines for module level frames/tracebacks 
(GH-8864)
https://github.com/python/cpython/commit/0e707b4c6a47086d8e723c7a010c3f5cf8296946


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[issue6700] inspect.getsource() returns incorrect source lines at the module level

[Tal Einat]

Change by Tal Einat :


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[issue33569] dataclasses InitVar does not maintain any type info

[Eric V. Smith]

Eric V. Smith  added the comment:

Can you create a pull request? It's easier to review that way.

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[issue6700] inspect.getsource() returns incorrect source lines at the module level

[miss-islington]

Change by miss-islington :


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[issue6700] inspect.getsource() returns incorrect source lines at the module level

[miss-islington]

Change by miss-islington :


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[issue6700] inspect.getsource() returns incorrect source lines at the module level

[Tal Einat]

Tal Einat  added the comment:


New changeset 91cb298f811961277fd4cc4a32211899d48bedcb by Tal Einat (Vladimir 
Matveev) in branch 'master':
bpo-6700: Fix inspect.getsourcelines for module level frames/tracebacks 
(GH-8864)
https://github.com/python/cpython/commit/91cb298f811961277fd4cc4a32211899d48bedcb


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[issue34486] "RuntimeError: release unlocked lock" when starting a thread

[Uosiu]

Stanisław Skonieczny (Uosiu)  added the comment:

This scripts runs start_threads.py and send a signal to it. After some number 
of loops problem can be reproduced.

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Added file: https://bugs.python.org/file47762/test.sh

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[issue34486] "RuntimeError: release unlocked lock" when starting a thread

[Uosiu]

New submission from Stanisław Skonieczny (Uosiu) 
:

Sometimes when thread is starting it raises "RuntimeError: release unlocked 
lock". That is when signal handler is invoked in the same time.

Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 551, in wait
signaled = self._cond.wait(timeout)
  File "/usr/lib/python3.6/threading.py", line 304, in wait
self._acquire_restore(saved_state)
  File "start_threads.py", line 12, in sighandler
raise MyException("got signal")
__main__.MyException: got signal

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "start_threads.py", line 28, in 
thread.start()
  File "/usr/lib/python3.6/threading.py", line 851, in start
self._started.wait()
  File "/usr/lib/python3.6/threading.py", line 552, in wait
return signaled
  File "/usr/lib/python3.6/threading.py", line 243, in __exit__
return self._lock.__exit__(*args)
RuntimeError: release unlocked lock

I have attached to files that reproduce the problem. First runs python and 
starts noop threads in the loop. It uses signal handler that raises exception. 
Second is a bash script to run python script and send signal to it. After some 
time, when signal is handled in unfortunate place, python script breaks due to 
unreleased lock.

--
components: Library (Lib)
files: start_threads.py
messages: 323998
nosy: Stanisław Skonieczny (Uosiu)
priority: normal
severity: normal
status: open
title: "RuntimeError: release unlocked lock" when starting a thread
versions: Python 3.6
Added file: https://bugs.python.org/file47761/start_threads.py

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[issue31861] add aiter() and anext() functions to operator module

[Yury Selivanov]

Yury Selivanov  added the comment:

Great, thanks! There's someone working on a pr to add them as builtins (so that 
pr is in C). I'll have to take a look when i'm back from vacation at that pr 
too, before we can make a decision. 

I've been to europython, pycon ru, and pybay conferences recently and the 
number of people who want these as builtins was surprisingly high.

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[issue34347] AIX: test_utf8_mode.test_cmd_line fails

[Michael Felt]

Michael Felt  added the comment:

On 23/08/2018 19:14, Michael Felt wrote:
> Michael Felt  added the comment:
>
> On 23/08/2018 12:51, STINNER Victor wrote:
>> STINNER Victor  added the comment:
>>
>> Your issue is about decoding command line argument which is done from main() 
>> function. It doesn't use Python codecs, but functions like Py_DecodeLocale().
> This is beyond my understanding atm.
> Early on I tried making the expected just be 'arg' and went from
> situation A to situation B - which looked much closer, BUT, the 'types'
> differed:
>
> Situaltion A (original)
> AssertionError: "['h\\xc3\\xa9\\xe2\\x82\\xac']" != 
> "['h\\udcc3\\udca9\\udce2\\udc82\\udcac']"
> - ['h\xc3\xa9\xe2\x82\xac']
> + ['h\udcc3\udca9\udce2\udc82\udcac']
>  : ISO8859-1:['h\xc3\xa9\xe2\x82\xac']
>
> I tried saying the "expected" is arg, but arg is still a byte object, the 
> cmd_line result is not (printed as such).
>
> Situation B
> AssertionError: "['h\\xc3\\xa9\\xe2\\x82\\xac']" != 
> "[b'h\\xc3\\xa9\\xe2\\x82\\xac']"
> - ['h\xc3\xa9\xe2\x82\xac']
> + [b'h\xc3\xa9\xe2\x82\xac']
> ?  +
>  : ISO8859-1:['h\xc3\xa9\xe2\x82\xac']
>
> After further digging - to understand why it was coming as "\x encoding 
> rather than \udc"
>
> I looked at what was happening here:
>
> out = self.get_output('-X', utf8_opt, '-c', code, arg, **kw)
> becomes
> out = self.get_output('-X', utf8_opt, '-c', code, 
> 'h\xe9\u20ac'.encode('utf-8'), **kw)
> becomes
> out = self.get_output('-X', utf8_opt, '-c', code, b'h\xc3\xa9\xe2\x82\xac', 
> **kw)
>
> And finally, at the CLI becomes:
> ['/data/prj/python/python3-3.8/python', '-X', 'faulthandler', '-X', 'utf8', 
> '-c', 'import locale, sys; print("%s:%s" % (locale.getpreferredencoding(), 
> ascii(sys.argv[1:])))', b'h\xc3\xa9\xe2\x82\xac']
>
> /data/prj/python/python3-3.8/python '-X' 'faulthandler' '-X' 'utf8' '-c' 
> 'import locale, sys; print("%s:%s" % (locale.getpreferredencoding(), 
> ascii(sys.ar
> gv[1:])))', b'h\xc3\xa9\xe2\x82\xac'
> UTF-8:['bh\\xc3\\xa9\\xe2\\x82\\xac']
>
> /data/prj/python/python3-3.8/python '-X' 'faulthandler' '-X' 'utf8=0' '-c' 
> 'import locale, sys; print("%s:%s" % (locale.getpreferredencoding(), 
> ascii(sys.
> argv[1:])))', b'h\xc3\xa9\xe2\x82\xac'
> ISO8859-1:['bh\\xc3\\xa9\\xe2\\x82\\xac']
>
> Note:
> /data/prj/python/python3-3.8/python '-X' 'faulthandler' '-X' 'utf8=0' '-c' 
> 'import locale, sys; print("%s:%s" % (locale.getpreferredencoding(), 
> ascii(sys.
> argv[1:])))', 'h\udcc3\udca9\udce2\udc82\udcac'
> ISO8859-1:['h\\udcc3\\udca9\\udce2\\udc82\\udcac']
>
> /data/prj/python/python3-3.8/python '-X' 'faulthandler' '-X' 'utf8=0' '-c' 
> 'import locale, sys; print("%s:%s" % (locale.getpreferredencoding(), 
> ascii(sys.
> argv[1:])))', b'h\udcc3\udca9\udce2\udc82\udcac'
> ISO8859-1:['bh\\udcc3\\udca9\\udce2\\udc82\\udcac']
>
> root@x066:[/data/prj/python/python3-3.8]/data/prj/python/python3-3.8/python 
> '-X' 'faulthandler' '-X' 'utf8' '-c' 'import locale, sys; print("%s:%s" % (>
> UTF-8:['bh\\udcc3\\udca9\\udce2\\udc82\\udcac']
>
> Summary:
> a) concerned about how b'h' becomes 'bh'
> b) whatwever argv[1] is, is very close to what is returned - so whatever 
> happens durinf the transformation from 
> self.get_output('-X', utf8_opt, '-c', code, arg, **kw)
>  determines the output and the (failed) comparison.
p.s. also tried:
michael@x071:[/data/prj/python/git/python3-3.8]/data/prj/python/python3-3.8/python
'-X' 'faulthandler' '-X' 'utf8=0' '-c' 'import locale, sys;
print("%s:%s" % (locale.getpreferredencoding(), ascii(sys.argv[1:])))',
'h\xe9\u20ac'.encode\('utf-8'\)
ISO8859-1:['h\\xe9\\u20ac.encode(utf-8)']
michael@x071:[/data/prj/python/git/python3-3.8]/data/prj/python/python3-3.8/python
'-X' 'faulthandler' '-X' 'utf8=1' '-c' 'import locale, sys;
print("%s:%s" % (locale.getpreferredencoding(), ascii(sys.argv[1:])))',
'h\xe9\u20ac'.encode\('utf-8'\)
UTF-8:['h\\xe9\\u20ac.encode(utf-8)']

Really unclear to me what this test is trying to verify. The CLI seems
to just 'echo' what it is provided.
>>> Question 1: why is windows excluded? Because it does not use UTF-8 as it's 
>>> default (it's default is CP1252)
>> Windows uses wmain() which gets command line arguments as wchar_t* strings: 
>> Unicode. No decoding is needed.
>>
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