[issue27494] 2to3 parser failure caused by a comma after a generator expression

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
type: crash -> behavior
versions: +Python 3.8 -Python 2.7, Python 3.5, Python 3.6

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[issue27494] 2to3 parser failure caused by a comma after a generator expression

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
pull_requests: +7773
stage:  -> patch review

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[issue25828] PyCode_Optimize() (peephole optimizer) doesn't handle KeyboardInterrupt correctly

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Can this issue be closed now?

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[issue12087] install_egg_info fails with UnicodeEncodeError depending on locale

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Fixed in issue9561.

--
nosy: +serhiy.storchaka
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> distutils: set encoding to utf-8 for input and output files
type: crash -> behavior

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[issue16360] argparse: comma in metavar causes assertion failure when formatting long usage message

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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type: crash -> behavior

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[issue17925] asynchat.async_chat.initiate_send : del deque[0] is not safe

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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type: crash -> behavior

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[issue10523] argparse has problem parsing option files containing empty rows

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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type: crash -> behavior

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[issue21567] cannot create multipart alternative message with us-ascii charset

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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type: crash -> behavior

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[issue22496] urllib2 fails against IIS (urllib2 can't parse 401 reply www-authenticate headers)

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue19453] pydoc.py doesn't detect IronPython, help(foo) can hang

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue17518] urllib2 cannnot handle https and BasicAuth via Proxy.

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue23389] pkgutil.find_loader raises an ImportError on PEP 420 implicit namespace packages

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue23443] XMLRPCLIB Exception uses str not class or instance

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue23837] read pipe transport tries to resume reading after loop is gone

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue18323] 'GzipFile' object has no attribute 'extrastart'

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue24691] out of memory in distutils.upload with large files

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue25640] EmailMessage should throw an error if policy is set to compat32

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue25872] multithreading traceback KeyError when modifying file

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue18454] distutils crashes when uploading to PyPI having only the username (no pw) defined

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue23228] The tarfile module crashes when tarfile contains a symlink and unpack directory contain it too

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue26952] argparse help formatter crashes

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue27513] email.utils.getaddresses does not handle Header objects

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue27820] Possible bug in smtplib when initial_response_ok=False

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue29516] shutil.copytree(symlinks=True) fails when copying symlinks cross-device and there is no alternative

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue26543] imaplib noop Debug

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue27715] call-matcher breaks if a method is mocked with spec=True

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue31292] `python setup.py check --restructuredtext` fails when a include directive is present.

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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type: crash -> behavior

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[issue30566] punycode codec raises IndexError in decode_generalized_number()

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue31481] telnetlib fails to read continous large output from Windows Telnet Server

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue24564] shutil.copytree fails when copying NFS to NFS

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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components: +Library (Lib)
type: crash -> behavior

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[issue32729] socket error handling needed

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue33025] urlencode produces bad output from ssl.CERT_NONE and friends that chokes decoders

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue33635] OSError when using pathlib.Path.rglob() to list device files

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue33729] Hashlib/blake2* missing 'data' keyword argument

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue33980] SSL Error when uploading package to your own pypi

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue29699] shutil.rmtree should not fail with FileNotFoundError (race condition)

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue33972] AttributeError in email.message.iter_attachments()

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue33935] shutil.copyfile throws incorrect SameFileError on Google Drive File Stream

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue33808] ssl.get_server_certificate fails with openssl 1.1.0 but works with 1.0.2g for self-signed certificate

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue34071] repr(task) raises AssertionError for coros which loop.create_task accepts; complications ensue

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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[issue31377] remove *_INTERNED opcodes from marshal

[INADA Naoki]

INADA Naoki  added the comment:

I doubt that interning cause reproduciblity problem.

AFAIK, all strings in code object are interned or not
interned deterministically.

https://bugzilla.opensuse.org/show_bug.cgi?id=1049186
This issue seems be caused by w_ref() based on object refcnt,
not interning.

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[issue33729] Hashlib/blake2* missing 'data' keyword argument

[Christian Heimes]

Christian Heimes  added the comment:

None of the hashlib functions are taking keyword arguments for data:

>>> hashlib.sha256(data=b'foo')
Traceback (most recent call last):
  File "", line 1, in 
TypeError: openssl_sha256() takes no keyword arguments
>>> hashlib.blake2b(data=b'foo')
Traceback (most recent call last):
  File "", line 1, in 
TypeError: 'data' is an invalid keyword argument for this function

--
versions: +Python 3.7, Python 3.8

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[issue33597] Compact PyGC_Head

[INADA Naoki]

INADA Naoki  added the comment:


New changeset d5c875bbf1ef9b24349d3243b1ffaab6a9d5a78e by INADA Naoki in branch 
'master':
bpo-33597: Add What's New for PyGC_Head (GH-8236)
https://github.com/python/cpython/commit/d5c875bbf1ef9b24349d3243b1ffaab6a9d5a78e


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[issue29442] Replace optparse with argparse in setup.py

[INADA Naoki]

Change by INADA Naoki :


--
nosy:  -inada.naoki
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
versions: +Python 3.8 -Python 3.7

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[issue29442] Replace optparse with argparse in setup.py

[INADA Naoki]

INADA Naoki  added the comment:


New changeset 09b2bece78f62c3d363236dce593ecfe130afd2f by INADA Naoki 
(Chih-Hsuan Yen) in branch 'master':
bpo-29442: Replace optparse with argparse in setup.py (GH-139)
https://github.com/python/cpython/commit/09b2bece78f62c3d363236dce593ecfe130afd2f


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nosy: +inada.naoki

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[issue34091] REPL does not work in msys2, ConEmu terminals on windows

[Maximilian Nöthe]

New submission from Maximilian Nöthe :

The REPL won't start in interactive mode, it only starts when explicitly given 
the `-i` option. 

The problems IPython is having, e.g. missing syntax highlighting and no tab 
completion should have the same root.

See this issue for mingw:
https://github.com/Alexpux/MINGW-packages/issues/730

They fixed it by patching python using this patch:
https://github.com/Alexpux/MINGW-packages/blob/master/mingw-w64-python3/1700-cygpty-isatty.patch

And this issue at msys2:
https://sourceforge.net/p/msys2/tickets/32/

--
messages: 321417
nosy: maxnoe
priority: normal
severity: normal
status: open
title: REPL does not work in msys2, ConEmu terminals on windows
type: behavior
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

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[issue34084] possible free statically allocated string in compiler when easter egg on

[STINNER Victor]

Change by STINNER Victor :


--
keywords: +patch
pull_requests: +7775
stage:  -> patch review

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[issue34084] possible free statically allocated string in compiler when easter egg on

[STINNER Victor]

STINNER Victor  added the comment:

This issue is related to bpo-34080.

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[issue34080] Memory leak in the compiler in case of errors

[STINNER Victor]

STINNER Victor  added the comment:

Related issue: bpo-34084.

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[issue34080] Memory leak in the compiler in case of errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34084] possible free statically allocated string in compiler when easter egg on

[STINNER Victor]

STINNER Victor  added the comment:

> I expected it should be easy to reproduce a crash, but I failed to find an 
> example.

I don't understand how parsetok.c is supposed to handle "from __future__ import 
barry_as_FLUFL":

* Parser/parsetok.c tests (ps->p_flags & CO_FUTURE_BARRY_AS_BDFL)
* Python/future.c uses "if (strcmp(feature, FUTURE_BARRY_AS_BDFL) == 0) { 
ff->ff_features |= CO_FUTURE_BARRY_AS_BDFL; }"
* Python/pythonrun.c: PARSER_FLAGS() copies CO_FUTURE_BARRY_AS_BDFL flag as 
PyPARSE_BARRY_AS_BDFL

The only way to use "<>" operator seems to pass explicitly 
CO_FUTURE_BARRY_AS_BDFL flag to compile() flags, which is not the convenient 
way to use "from __future__ import barry_as_FLUFL" :-(

Code:
---
import inspect
CO_FUTURE_BARRY_AS_BDFL = 0x4
flags = CO_FUTURE_BARRY_AS_BDFL
code = "print(1 <> 2)"
try:
compile(code, "filename", "exec", flags=0)
except SyntaxError:
print("ok")
else:
raise Exception("SyntaxError expected")
compile(code, "filename", "exec", flags=flags)
print("ok")
---

Maybe we need a test for the easter egg. Or maybe we should remove it? :-p

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[issue34084] possible free statically allocated string in compiler when easter egg on

[STINNER Victor]

STINNER Victor  added the comment:

Oh, this easter egg is tested by Lib/test/test_flufl.py.

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[issue34091] REPL does not work in msys2, ConEmu terminals on windows

[Martin Panter]

Martin Panter  added the comment:

The problem as I understand it is that Msys uses a pipe, but Python by default 
limits interactive REPL mode to terminals only. The same thing happens if you 
start Python on a pipe some other way, for instance “cat | python” vs “cat | 
python -i”.

I would prefer if Python decided to use interactive mode when no file name is 
given, rather than by checking if the file is a terminal. But that would break 
compatibility.

Another tip with Msys: enable unbuffered output with “python -u”. Otherwise 
output gets buffered, won’t be seen immediately, and may be lost if there is an 
unclean exit.

--
components: +Windows
nosy: +martin.panter, paul.moore, steve.dower, tim.golden, zach.ware

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[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[STINNER Victor]

New submission from STINNER Victor :

https://buildbot.python.org/all/#builders/114/builds/163

1:26:51 load avg: 4.83 [117/415/1] test_logging failed -- running: 
test_multiprocessing_forkserver (8 min 18 sec)
beginning 6 repetitions
123456
.--- Logging error ---
Traceback (most recent call last):
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/smtplib.py", 
line 387, in getreply
line = self.file.readline(_MAXLINE + 1)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/socket.py", 
line 589, in readinto
return self._sock.recv_into(b)
socket.timeout: timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/logging/handlers.py",
 line 1007, in emit
smtp = smtplib.SMTP(self.mailhost, port, timeout=self.timeout)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/smtplib.py", 
line 251, in __init__
(code, msg) = self.connect(host, port)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/smtplib.py", 
line 338, in connect
(code, msg) = self.getreply()
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/smtplib.py", 
line 391, in getreply
+ str(e))
smtplib.SMTPServerDisconnected: Connection unexpectedly closed: timed out
Call stack:
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/runpy.py", 
line 193, in _run_module_as_main
"__main__", mod_spec)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/runpy.py", 
line 85, in _run_code
exec(code, run_globals)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/regrtest.py",
 line 50, in 
_main()
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/regrtest.py",
 line 46, in _main
main()
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/libregrtest/main.py",
 line 584, in main
Regrtest().main(tests=tests, **kwargs)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/libregrtest/main.py",
 line 531, in main
self._main(tests, kwargs)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/libregrtest/main.py",
 line 547, in _main
run_tests_slave(self.ns.slaveargs)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/libregrtest/runtest_mp.py",
 line 68, in run_tests_slave
result = runtest(ns, testname)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/libregrtest/runtest.py",
 line 140, in runtest
result = runtest_inner(ns, test, display_failure=not ns.verbose)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/libregrtest/runtest.py",
 line 177, in runtest_inner
refleak = dash_R(the_module, test, test_runner, ns.huntrleaks)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/libregrtest/refleak.py",
 line 69, in dash_R
indirect_test()
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/support/__init__.py",
 line 1606, in inner
return func(*args, **kwds)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/test_logging.py",
 line 4641, in test_main
support.run_unittest(*tests)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/support/__init__.py",
 line 1972, in run_unittest
_run_suite(suite)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/support/__init__.py",
 line 1882, in _run_suite
result = runner.run(suite)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/support/__init__.py",
 line 1781, in run
test(result)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/unittest/suite.py",
 line 84, in __call__
return self.run(*args, **kwds)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/unittest/suite.py",
 line 122, in run
test(result)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/unittest/suite.py",
 line 84, in __call__
return self.run(*args, **kwds)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/unittest/suite.py",
 line 122, in run
test(result)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/unittest/case.py",
 line 663, in __call__
return self.run(*args, **kwds)
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/unittest/case.py",
 line 615, in run
testMethod()
  File 
"/buildbot/buildarea/cpython/3.7.ware-gentoo-x86.refleak/build/Lib/test/test_logging.py",
 line 988, in test_basic
h.handle(r)
Message: 'Hello ✓'
Arguments: ()
test test_logging failed -- Traceback (most recent call last):
  File 
"/buildbot/

[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[STINNER Victor]

STINNER Victor  added the comment:

bpo-14314 added a timeout of 5 seconds in the test:

-self.handled.wait()p
+self.handled.wait(5.0)  # 14314: don't wait forever

commit 17160fd6d6d7850294a9a465a3e5e399e5028bb6
Author: Vinay Sajip 
Date:   Thu Mar 15 12:02:08 2012 +

Fixes #14314: Improved SMTP timeout handling.


The timeout has been increased to 8 seconds by:

commit 827f5d35e592c21e4bb82afb702c6496cf77c2ad
Author: Vinay Sajip 
Date:   Tue Dec 3 11:28:55 2013 +

Issue #19665: Increased timeout for SMTPHandler test.


I suggest to just increase the timeout to 60 seconds.

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[issue34084] possible free statically allocated string in compiler when easter egg on

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Could you add a test in test_flufl.py that will fail with not patched code?

This issue and issue34080 look unrelated to me. They can be fixed independently.

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[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[STINNER Victor]

Change by STINNER Victor :


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[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[STINNER Victor]

STINNER Victor  added the comment:

Python 2.7 is not affected: it has no test for the SMTPHandler.

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[issue34083] Functional Programming HOWTO: Dictionary ordering isn't "essentially random"

[INADA Naoki]

INADA Naoki  added the comment:


New changeset 5e5bbbec467a1569c914a048a94e7597528f92cf by INADA Naoki (Stig 
Johan Berggren) in branch 'master':
bpo-34083: Update dict order in Functional HOWTO (GH-8230)
https://github.com/python/cpython/commit/5e5bbbec467a1569c914a048a94e7597528f92cf


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[issue34083] Functional Programming HOWTO: Dictionary ordering isn't "essentially random"

[miss-islington]

Change by miss-islington :


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[issue34083] Functional Programming HOWTO: Dictionary ordering isn't "essentially random"

[INADA Naoki]

INADA Naoki  added the comment:

Thanks, Stig.
And I'm sorry about I missed Raymond assigned himself.

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[issue34084] possible free statically allocated string in compiler when easter egg on

[STINNER Victor]

STINNER Victor  added the comment:

> Could you add a test in test_flufl.py that will fail with not patched code?

It seems like PyObject_FREE() is never called with the static string "with 
Barry as BDFL, use '<>' instead of '!='".

When parsetok() goes to code path (1):

err_ret->text = "with Barry as BDFL, use '<>' "
"instead of '!='";

Later, it goes to code path (2) as well:

if (tok->buf != NULL) {
...
err_ret->text = (char *) PyObject_MALLOC(len + 1);

Hum, I modified my PR to removed *dead code*:

err_ret->text = "with Barry as BDFL, use '<>' "
"instead of '!='";

> This issue and issue34080 look unrelated to me. They can be fixed 
> independently.

In practice, both issues are related and it seems easier to me to fix them both 
at the same time ;-)

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[issue19453] pydoc.py doesn't detect IronPython, help(foo) can hang

[Mark Lawrence]

Change by Mark Lawrence :


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[issue17518] urllib2 cannnot handle https and BasicAuth via Proxy.

[Mark Lawrence]

Change by Mark Lawrence :


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[issue33597] Compact PyGC_Head

[STINNER Victor]

STINNER Victor  added the comment:

> bpo-33597: Add What's New for PyGC_Head (GH-8236)

Thank you!

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[issue23837] asyncio: read pipe transport tries to resume reading after loop is gone

[STINNER Victor]

Change by STINNER Victor :


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asyncio: read pipe transport tries to resume reading after loop is gone

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[issue29442] Replace optparse with argparse in setup.py

[STINNER Victor]

STINNER Victor  added the comment:

> bpo-29442: Replace optparse with argparse in setup.py (GH-139)

I'm surprised that it works, but I tested manually and I confirm that it works 
:-)

$ git clean -fdx
$ ./configure --with-pydebug
$ make
$ ./python -c "import select"

No compilation error ;-)

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[issue34033] distutils is not reproducible

[STINNER Victor]

STINNER Victor  added the comment:

> Is this issue for only known marshal issue?

IMHO the order in which .pyc files are created on disk also matters. It changes 
the result of "os.listdir()": some application can rely on unsorted 
os.listdir(). sorted() seems simple and hardless compared to the benefit.

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[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 31b50b8cbfbf49d5fc17c612cf0dfaa4d0c24983 by Victor Stinner in 
branch 'master':
bpo-34092, test_logging: increase SMTPHandlerTest timeout (GH-8245)
https://github.com/python/cpython/commit/31b50b8cbfbf49d5fc17c612cf0dfaa4d0c24983


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[issue34093] Reproducible pyc: FLAG_REF is not stable.

[INADA Naoki]

Change by INADA Naoki :


--
components: Extension Modules
nosy: inada.naoki
priority: normal
severity: normal
status: open
title: Reproducible pyc: FLAG_REF is not stable.
versions: Python 3.8

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[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[miss-islington]

Change by miss-islington :


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[issue34091] REPL does not work in msys2, ConEmu terminals on windows

[Eric V. Smith]

Change by Eric V. Smith :


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[issue34093] Reproducible pyc: FLAG_REF is not stable.

[INADA Naoki]

Change by INADA Naoki :


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[issue34033] distutils is not reproducible

[INADA Naoki]

INADA Naoki  added the comment:

OK, I created sub issue for pyc.

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opcodes from marshal

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[issue34093] Reproducible pyc: FLAG_REF is not stable.

[INADA Naoki]

New submission from INADA Naoki :

PR-8226 makes marshal two-pass.  It may have small overhead.

In case of compiling module, marshal performance is negligible.
But how in other cases?  Should this change optional?

And should we backport this to Python 3.7?
Or should distributors cherrypick this?

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[issue34094] Porting Python 2 to Python 3 example contradicts its own advice

[Bruce Richardson]

New submission from Bruce Richardson :

https://docs.python.org/3/howto/pyporting.html#use-feature-detection-instead-of-version-detection

In this section, the (very good) advice is "It would be better to treat Python 
2 as the exceptional case instead of Python 3 and assume that future Python 
versions will be more compatible with Python 3 than Python 2"

However, it then goes on to present the best solution (for dealing with library 
imports) is this:

try:
from importlib import abc
except ImportError:
from importlib2 import abc

This is literally treating Python 3 as the exception, completely contradicting 
the advice given a few lines earlier.  Practically, it also has the effect 
that, as Python 3 adoption spreads, import errors and automatic retries will 
become *more* common and then universal, adding a small amount of delay and 
noise to the entire Python estate.  And that's not considering the case where 
both libraries are installed to cope with old code relying on the old library 
(in which case you surely want new code to default to using the new library)

If the example is simply changed to

try:
from importlib2 import abc
except ImportError:
from importlib import abc

then both the contradiction and the practical problems go away

--
assignee: docs@python
components: Documentation
messages: 321436
nosy: Bruce Richardson, brett.cannon, docs@python
priority: normal
severity: normal
status: open
title: Porting Python 2 to Python 3 example contradicts its own advice

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[issue34081] Sphinx duplicate label warning in docs

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan :


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[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[STINNER Victor]

Change by STINNER Victor :


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[issue34091] REPL does not work in msys2, ConEmu terminals on windows

[Maximilian Nöthe]

Maximilian Nöthe  added the comment:

Tab completion does not work in the REPL even when started with `-i -u`, so 
there might be a deeper problem than just the PIPE that's preventing python 
from starting in interactive mode.

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[issue25828] PyCode_Optimize() (peephole optimizer) doesn't handle KeyboardInterrupt correctly

[STINNER Victor]

STINNER Victor  added the comment:

Yeah, let's close this issue.

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[issue33648] unused with_c_locale_warning option in configure should be removed

[INADA Naoki]

INADA Naoki  added the comment:


New changeset b91a3a0d61596cafb1b46c98fab65fee16a8 by INADA Naoki (Eitan 
Adler) in branch 'master':
bpo-33648: Remove PY_WARN_ON_C_LOCALE (GH-7114)
https://github.com/python/cpython/commit/b91a3a0d61596cafb1b46c98fab65fee16a8


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[issue33648] unused with_c_locale_warning option in configure should be removed

[INADA Naoki]

INADA Naoki  added the comment:

thanks

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[issue33648] unused with_c_locale_warning option in configure should be removed

[STINNER Victor]

STINNER Victor  added the comment:

Should we backport the change to 3.7?

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[issue33648] unused with_c_locale_warning option in configure should be removed

[INADA Naoki]

INADA Naoki  added the comment:

Hm, it seems safe to backport.

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[issue33648] unused with_c_locale_warning option in configure should be removed

[INADA Naoki]

Change by INADA Naoki :


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[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[STINNER Victor]

STINNER Victor  added the comment:


New changeset d68cb9d62c3671dd9aee5cdecb02fcb3268dacf0 by Victor Stinner in 
branch '3.6':
bpo-34092, test_logging: increase SMTPHandlerTest timeout (GH-8245) (GH-8249)
https://github.com/python/cpython/commit/d68cb9d62c3671dd9aee5cdecb02fcb3268dacf0


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[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[STINNER Victor]

STINNER Victor  added the comment:

I hope that the issue was just that the buildbot was slow, and that the failure 
didn't hide a real bug.

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[issue33648] unused with_c_locale_warning option in configure should be removed

[miss-islington]

Change by miss-islington :


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[issue27923] PEP 467 -- Minor API improvements for binary sequences

[amirjn]

amirjn  added the comment:

Thank you Inda Naoki. It just worked for me in https://www.blogs.va.gov/ and 
https://aralens.ir

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[issue34083] Functional Programming HOWTO: Dictionary ordering isn't "essentially random"

[miss-islington]

miss-islington  added the comment:


New changeset 151820e7a0ebe50b3d4fa64e22623c5470f1c56f by Miss Islington (bot) 
in branch '3.7':
bpo-34083: Update dict order in Functional HOWTO (GH-8230)
https://github.com/python/cpython/commit/151820e7a0ebe50b3d4fa64e22623c5470f1c56f


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[issue34095] segfault in testsuite

[Erich Eckner]

New submission from Erich Eckner :

building python 2.7.15 on archlinux32 from source succeeds, but running the 
testsuite segfaults with:

test_writelines (idlelib.idle_test.test_io.PseudeOutputFilesTest) ... 
/usr/bin/xvfb-run: line 181:  3617 Segmentation fault  (core dumped) 
DISPLAY=:$SERVERNUM XAUTHORITY=$AUTHFILE "$@" 2>&1

the executed commands are:

  cd Python-${pkgver}

  # Temporary workaround for FS#22322
  # See http://bugs.python.org/issue10835 for upstream report
  sed -i "/progname =/s/python/python${_pybasever}/" Python/pythonrun.c

  # Enable built-in SQLite module to load extensions (fix FS#22122)
  sed -i "/SQLITE_OMIT_LOAD_EXTENSION/d" setup.py

  # FS#23997
  sed -i -e "s|^#.* /usr/local/bin/python|#!/usr/bin/python2|" Lib/cgi.py

  sed -i "s/python2.3/python2/g" Lib/distutils/tests/test_build_scripts.py \
Lib/distutils/tests/test_install_scripts.py

  # Ensure that we are using the system copy of various libraries (expat, zlib 
and libffi),
  # rather than copies shipped in the tarball
  rm -r Modules/expat
  rm -r Modules/zlib
  rm -r Modules/_ctypes/{darwin,libffi}*

  # clean up #!s
  find . -name '*.py' | \
xargs sed -i "s|#[ ]*![ ]*/usr/bin/env python$|#!/usr/bin/env python2|"

  # Workaround asdl_c.py/makeopcodetargets.py errors after we touched the 
shebangs
  touch Include/Python-ast.h Python/Python-ast.c Python/opcode_targets.h

  # FS#48761
  # http://bugs.python.org/issue25750
  patch -Np1 -i ../descr_ref.patch

  export OPT="${CFLAGS}"
  ./configure --prefix=/usr \
  --enable-shared \
  --with-threads \
  --enable-optimizations \
  --with-lto \
  --enable-ipv6 \
  --enable-unicode=ucs4 \
  --with-system-expat \
  --with-system-ffi \
  --with-dbmliborder=gdbm:ndbm \
  --without-ensurepip

  make

  LD_LIBRARY_PATH="${srcdir}/Python-${pkgver}":${LD_LIBRARY_PATH} \
xvfb-run "${srcdir}/Python-${pkgver}/python" -m test.regrtest -v -uall 2>&1 
| tee log.all

--
components: Build
files: log.all
messages: 321447
nosy: deep42thought
priority: normal
severity: normal
status: open
title: segfault in testsuite
versions: Python 2.7
Added file: https://bugs.python.org/file47682/log.all

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[issue34093] Reproducible pyc: FLAG_REF is not stable.

[INADA Naoki]

INADA Naoki  added the comment:

marshal: Mean +- std dev: [master] 123 us +- 7 us -> [patched] 173 us +- 2 us: 
1.41x slower (+41%)
compile+marshal: Mean +- std dev: [master] 5.28 ms +- 0.02 ms -> [patched] 5.47 
ms +- 0.34 ms: 1.04x slower (+4%)

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Added file: https://bugs.python.org/file47683/bm_marshal.py

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[issue34096] testsuite fails assertion

[Erich Eckner]

New submission from Erich Eckner :

building python 2.7.15 on archlinux32 (the i686 branch of archlinux) from 
source succeeds, but running the testsuite (with some segfaulting tests 
disabled - see issue34095) results in an assertion error:

test_wrongsize (test.test_audioop.TestAudioop) ... test test_audioop failed -- 
Traceback (most recent call last):
  File "/home/vagrant/python2/src/Python-2.7.15/Lib/test/test_audioop.py", line 
48, in test_max
self.assertEqual(audioop.max(p(minvalues[w]), w), -minvalues[w])
AssertionError: -2147483648 != 2147483648L

ok

==
FAIL: test_max (test.test_audioop.TestAudioop)
--
Traceback (most recent call last):
  File "/home/vagrant/python2/src/Python-2.7.15/Lib/test/test_audioop.py", line 
48, in test_max
self.assertEqual(audioop.max(p(minvalues[w]), w), -minvalues[w])
AssertionError: -2147483648 != 2147483648L



The commands leading to this are:

  cd Python-${pkgver}

  # Temporary workaround for FS#22322
  # See http://bugs.python.org/issue10835 for upstream report
  sed -i "/progname =/s/python/python${_pybasever}/" Python/pythonrun.c

  # Enable built-in SQLite module to load extensions (fix FS#22122)
  sed -i "/SQLITE_OMIT_LOAD_EXTENSION/d" setup.py

  # FS#23997
  sed -i -e "s|^#.* /usr/local/bin/python|#!/usr/bin/python2|" Lib/cgi.py

  sed -i "s/python2.3/python2/g" Lib/distutils/tests/test_build_scripts.py \
Lib/distutils/tests/test_install_scripts.py

  # Ensure that we are using the system copy of various libraries (expat, zlib 
and libffi),
  # rather than copies shipped in the tarball
  rm -r Modules/expat
  rm -r Modules/zlib
  rm -r Modules/_ctypes/{darwin,libffi}*

  # clean up #!s
  find . -name '*.py' | \
xargs sed -i "s|#[ ]*![ ]*/usr/bin/env python$|#!/usr/bin/env python2|"

  # Workaround asdl_c.py/makeopcodetargets.py errors after we touched the 
shebangs
  touch Include/Python-ast.h Python/Python-ast.c Python/opcode_targets.h

  # FS#48761
  # http://bugs.python.org/issue25750
  patch -Np1 -i ../descr_ref.patch

  export OPT="${CFLAGS}"
  ./configure --prefix=/usr \
  --enable-shared \
  --with-threads \
  --enable-optimizations \
  --with-lto \
  --enable-ipv6 \
  --enable-unicode=ucs4 \
  --with-system-expat \
  --with-system-ffi \
  --with-dbmliborder=gdbm:ndbm \
  --without-ensurepip

  make

  LD_LIBRARY_PATH="${srcdir}/Python-${pkgver}":${LD_LIBRARY_PATH} \
xvfb-run "${srcdir}/Python-${pkgver}/python" -m test.regrtest -v -uall -x 
test_idle test_bytes test_str test_string test_unicode test_userstring 
test_tuple test_tk test_ttk_guionly test_ctypes 2>&1 | tee log.reduced

--
components: Build
files: log.reduced
messages: 321449
nosy: deep42thought
priority: normal
severity: normal
status: open
title: testsuite fails assertion
versions: Python 2.7
Added file: https://bugs.python.org/file47684/log.reduced

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[issue34087] Segmentation fault on visit_decref

[Rodrigo Pinheiro Marques de Araújo]

Rodrigo Pinheiro Marques de Araújo  added the comment:

Running with `-X faulthandler`

Fatal Python error: Segmentation fault

Current thread 0x7fff89cf2380 (most recent call first):
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/urls/resolvers.py", 
line 526 in resolve
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/urls/resolvers.py", 
line 500 in resolve
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/base.py", 
line 113 in _get_response
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File "/Users/rodrigo/root/lib/python3.7/site-packages/reversion/views.py", 
line 43 in do_revision_view
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/reversion/middleware.py", line 
51 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/utils/deprecation.py", 
line 95 in __call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/exception.py",
 line 35 in inner
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/handlers/base.py", 
line 81 in get_response
  File "/Users/rodrigo/root/lib/python3.7/site-packages/django/test/client.py", 
line 138 in __call__
  File "/Users/rodrigo/root/lib/python3.7/site-packages/django/test/client.py", 
line 467 in request
  File "/Users/rodrigo/root/lib/python3.7/site-packages/django/test/client.py", 
line 404 in generic
  File "/Users/rodrigo/root/lib/python3.7/site-packages/django/test/client.py", 
line 332 in get
  File "/Users/rodrigo/root/lib/python3.7/site-packages/django/test/client.py", 
line 517 in get
  File "/Users/rodrigo/root/lib/python3.7/unittest/case.py", line 615 in run
  File "/Users/rodrigo/root/lib/python3.7/unittest/case.py", line 663 in 
__call__
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/test/testcases.py", 
line 206 in __call__
  File "/Users/rodrigo/root/lib/python3.7/unittest/suite.py", line 122 in run
  File "/Users/rodrigo/root/lib/python3.7/unittest/suite.py", line 84 in 
__call__
  File "/Users/rodrigo/root/lib/python3.7/unittest/runner.py", line 176 in run
  File "/Users/rodrigo/root/lib/python3.7/site-packages/django/test/runner.py", 
line 569 in run_suite
  File "/Users/rodrigo/root/lib/python3.7/site-packages/django/test/runner.py", 
line 603 in run_tests
  File 
"/Users/rodrigo/root/lib/python3.7/site-packages/django/core/management/commands/test.py"

[issue34092] test_logging: SMTPHandlerTest.test_basic() fails randomly on x86 Gentoo Refleaks 3.7

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 0a1db32949b4813e9ac04e672fcb5bc97072a428 by Victor Stinner (Miss 
Islington (bot)) in branch '3.7':
bpo-34092, test_logging: increase SMTPHandlerTest timeout (GH-8245) (GH-8247)
https://github.com/python/cpython/commit/0a1db32949b4813e9ac04e672fcb5bc97072a428


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[issue34087] Segmentation fault on visit_decref

[STINNER Victor]

STINNER Victor  added the comment:

Please try to set PYTHONMALLOC=debug environment variable and run again your 
test. I hope that Python will be able to catch a memory corruption somewhere. 
If it's the case, you can try:

PYTHONMALLOC=debug python3 -X tracemalloc=10 (...)

To see where the corrupted object has been allocated.

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[issue34096] [2.7] test_audioop.test_max() failed: AssertionError: -2147483648 != 2147483648L

[STINNER Victor]

Change by STINNER Victor :


--
title: testsuite fails assertion -> [2.7] test_audioop.test_max() failed: 
AssertionError: -2147483648 != 2147483648L

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[issue34095] [2.7] test_idle fails with: /usr/bin/xvfb-run: line 181: 3617 Segmentation fault

[STINNER Victor]

Change by STINNER Victor :


--
title: segfault in testsuite -> [2.7] test_idle fails with: /usr/bin/xvfb-run: 
line 181:  3617 Segmentation fault

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[issue34095] [2.7] test_idle fails with: /usr/bin/xvfb-run: line 181: 3617 Segmentation fault

[STINNER Victor]

STINNER Victor  added the comment:

I don't see how test_idle runs the /usr/bin/xvfb-run command. First, it would 
be interesting to see what is the argument of the xvfb-run command and check if 
it does crash alone.

Can you please try to trace system calls using the following command and then 
attached the created trace file to this issue?

strace -f -o trace ./python -m test test_idle

> test_writelines (idlelib.idle_test.test_io.PseudeOutputFilesTest) ... 
> /usr/bin/xvfb-run: line 181:  3617 Segmentation fault  (core dumped) 
> DISPLAY=:$SERVERNUM XAUTHORITY=$AUTHFILE "$@" 2>&1

What are values of DISPLAY, SERVERNUM and AUTHFILE environment variables?

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[issue34096] [2.7] test_audioop.test_max() failed: AssertionError: -2147483648 != 2147483648L

[STINNER Victor]

STINNER Victor  added the comment:

It seems like you are using [GCC 8.1.1 20180531]. Can you please run the 
following command and attach the created "pythoninfo" file to his issue?

./python -m test.pythoninfo > pythoninfo

I'm looking for your CFLAGS.

I guess that the issue is specific to 32-bit, but we have many "x86" buildbots 
building Python on various compilers and running the test suite, and all these 
buildbots are green (success).

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