[issue45020] Freeze all modules imported during startup.

[Terry J. Reedy]

Terry J. Reedy  added the comment:


New changeset 369bf949ccbb689cd4638b29b4c0c12db79b927c by Terry Jan Reedy in 
branch 'main':
bpo-45020: Don't test IDLE with frozen module. (GH-28344)
https://github.com/python/cpython/commit/369bf949ccbb689cd4638b29b4c0c12db79b927c


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[issue45020] Freeze all modules imported during startup.

[miss-islington]

Change by miss-islington :


--
pull_requests: +26759
pull_request: https://github.com/python/cpython/pull/28346

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[issue45020] Freeze all modules imported during startup.

[miss-islington]

Change by miss-islington :


--
nosy: +miss-islington
nosy_count: 15.0 -> 16.0
pull_requests: +26758
pull_request: https://github.com/python/cpython/pull/28345

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[issue45193] IDLE Show completions pop-up not working on Ubuntu Linux

[Terry J. Reedy]

Terry J. Reedy  added the comment:


New changeset 1afc7b3219b24c951bb4e6b7e1ead904228de074 by Terry Jan Reedy in 
branch 'main':
bpo-45193: Restore IDLE completion boxes on Ubuntu (GH-28343)
https://github.com/python/cpython/commit/1afc7b3219b24c951bb4e6b7e1ead904228de074


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[issue45193] IDLE Show completions pop-up not working on Ubuntu Linux

[miss-islington]

Change by miss-islington :


--
nosy: +miss-islington
nosy_count: 5.0 -> 6.0
pull_requests: +26760
pull_request: https://github.com/python/cpython/pull/28347

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[issue45193] IDLE Show completions pop-up not working on Ubuntu Linux

[Terry J. Reedy]

Change by Terry J. Reedy :


--
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pull_request: https://github.com/python/cpython/pull/28348

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[issue45020] Freeze all modules imported during startup.

[miss-islington]

miss-islington  added the comment:


New changeset 8a9396cf1d9e1ce558841095e1ce0d3c23b7a8aa by Miss Islington (bot) 
in branch '3.10':
bpo-45020: Don't test IDLE with frozen module. (GH-28344)
https://github.com/python/cpython/commit/8a9396cf1d9e1ce558841095e1ce0d3c23b7a8aa


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[issue45020] Freeze all modules imported during startup.

[miss-islington]

miss-islington  added the comment:


New changeset f71b86e0ae194613d235086755c6a44266978be1 by Miss Islington (bot) 
in branch '3.9':
bpo-45020: Don't test IDLE with frozen module. (GH-28344)
https://github.com/python/cpython/commit/f71b86e0ae194613d235086755c6a44266978be1


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[issue45193] IDLE Show completions pop-up not working on Ubuntu Linux

[miss-islington]

miss-islington  added the comment:


New changeset 0c64569ac7066a97e4482c6d6e4d780806692ae5 by Miss Islington (bot) 
in branch '3.10':
bpo-45193: Restore IDLE completion boxes on Ubuntu (GH-28343)
https://github.com/python/cpython/commit/0c64569ac7066a97e4482c6d6e4d780806692ae5


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[issue45189] Drop the "list_frozen" command from _test_embed.

[STINNER Victor]

STINNER Victor  added the comment:

I found a new _imp._frozen_module_names() function:

$ ./python 
Python 3.11.0a0 (heads/main:1afc7b3219, Sep 15 2021, 10:22:28) [GCC >>> import 
_imp; _imp._frozen_module_names()
['_frozen_importlib', '_frozen_importlib_external', 'zipimport']

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[issue45152] Prepare for splitting LOAD_CONST into several opcodes

[Irit Katriel]

Irit Katriel  added the comment:


New changeset 40d2ac92f9a28a486156dafdbb613016bb1f6b98 by Irit Katriel in 
branch 'main':
bpo-45152: refactor the dis module to make handling of hasconst opcodes more 
generic (GH-28258)
https://github.com/python/cpython/commit/40d2ac92f9a28a486156dafdbb613016bb1f6b98


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[issue40746] test_gdb failing on 32-bit armv7l when built with GCC -Og (fail on Raspbian on 3.9, regression from 3.8)

[STINNER Victor]

STINNER Victor  added the comment:

test_gdb now pass on ARM Raspbian 3.x. I'm not sure why test_gdb fails on 3.10 
but pass on 3.x.

For me, it looks more like a gcc or gdb issue, rather than a Python bug.

ARM Raspbian 3.10:
https://buildbot.python.org/all/#/builders/685/builds/76

test.pythoninfo:

CC.version: gcc (Raspbian 10.2.1-6+rpi1) 10.2.1 20210110
gdb_version: GNU gdb (Raspbian 10.1-1.7) 10.1.90.20210103-git

sysconfig[CCSHARED]: -fPIC
sysconfig[CC]: gcc -pthread
sysconfig[CFLAGS]: -Wno-unused-result -Wsign-compare -g -Og -Wall
sysconfig[CONFIG_ARGS]: '--prefix' 
'/var/lib/buildbot/workers/3.10.gps-raspbian/build/target' '--with-pydebug'
sysconfig[HOST_GNU_TYPE]: armv7l-unknown-linux-gnueabihf
sysconfig[MACHDEP]: linux
sysconfig[MULTIARCH]: arm-linux-gnueabihf
sysconfig[OPT]: -g -Og -Wall
sysconfig[PY_CFLAGS]: -Wno-unused-result -Wsign-compare -g -Og -Wall
sysconfig[PY_CFLAGS_NODIST]: -std=c99 -Wextra -Wno-unused-result 
-Wno-unused-parameter -Wno-missing-field-initializers 
-Werror=implicit-function-declaration -fvisibility=hidden -I./Include/internal
sysconfig[PY_STDMODULE_CFLAGS]: -Wno-unused-result -Wsign-compare -g -Og -Wall 
-std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter 
-Wno-missing-field-initializers -Werror=implicit-function-declaration 
-fvisibility=hidden -I./Include/internal -I. -I./Include
sysconfig[Py_DEBUG]: 1

Logs:

==
FAIL: test_bt (test.test_gdb.PyBtTests)
Verify that the "py-bt" command works
--
Traceback (most recent call last):
  File 
"/var/lib/buildbot/workers/3.10.gps-raspbian/build/Lib/test/test_gdb.py", line 
776, in test_bt
self.assertMultilineMatches(bt,
  File 
"/var/lib/buildbot/workers/3.10.gps-raspbian/build/Lib/test/test_gdb.py", line 
295, in assertMultilineMatches
self.fail(msg='%r did not match %r' % (actual, pattern))
AssertionError: 'Breakpoint 1 at 0x258ba4: file Python/bltinmodule.c, line 
1194.\n[Thread debugging using libthread_db enabled]\nUsing host libthread_db 
library "/lib/arm-linux-gnueabihf/libthread_db.so.1".\n\nBreakpoint 1, 
builtin_id (self=, v=42) at Python/bltinmodule.c:1194\n1194\t{\nTraceback (most 
recent call first):\n  \n' did not match '^.*\nTraceback \\(most recent call first\\):\n  
\n  File ".*gdb_sample.py", line 10, in 
baz\nid\\(42\\)\n  File ".*gdb_sample.py", line 7, in bar\nbaz\\(a, b, 
c\\)\n  File ".*gdb_sample.py", line 4, in foo\nbar\\(a, b, c\\)\n  File 
".*gdb_sample.py", line 12, in \nfoo\\(1, 2, 3\\)\n'

Stderr:
Python Exception  Cannot access memory at address 
0xfdfdfd83: 
Error occurred in Python: Cannot access memory at address 0xfdfdfd83

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[issue40746] test_gdb failing on 32-bit armv7l when built with GCC -Og: Cannot access memory at address 0xfffffedc

[STINNER Victor]

Change by STINNER Victor :


--
title: test_gdb failing on 32-bit armv7l when built with GCC -Og (fail on 
Raspbian on 3.9, regression from 3.8) -> test_gdb failing on 32-bit armv7l when 
built with GCC -Og:  Cannot access memory at address 
0xfedc

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[issue45152] Prepare for splitting LOAD_CONST into several opcodes

[Irit Katriel]

Change by Irit Katriel :


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

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[issue44022] CVE-2021-3737: urllib http client possible infinite loop on a 100 Continue response

[STINNER Victor]

STINNER Victor  added the comment:

Matej Cepl: "Is there a CVE for this?"

Yes, CVE-2021-3737 was assigned to this issue.

* https://access.redhat.com/security/cve/CVE-2021-3737
* https://bugzilla.redhat.com/show_bug.cgi?id=1995162

--
nosy: +vstinner
title: urllib http client possible infinite loop on a 100 Continue response -> 
CVE-2021-3737: urllib http client possible infinite loop on a 100 Continue 
response

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[issue44022] CVE-2021-3737: urllib http client possible infinite loop on a 100 Continue response

[STINNER Victor]

STINNER Victor  added the comment:

I created 
https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html to 
track the issue.

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[issue44022] CVE-2021-3737: urllib http client possible infinite loop on a 100 Continue response

[STINNER Victor]

STINNER Victor  added the comment:

I'm not sure why the fix in the main branch was not listed here:

commit 47895e31b6f626bc6ce47d175fe9d43c1098909d
Author: Gen Xu 
Date:   Wed May 5 15:42:41 2021 -0700

bpo-44022: Fix http client infinite line reading (DoS) after a HTTP 100 
Continue (GH-25916)

Fixes http.client potential denial of service where it could get stuck 
reading lines from a malicious server after a 100 Continue response.

Co-authored-by: Gregory P. Smith 

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[theeshallnotknowethme]

New submission from theeshallnotknowethme :

Add a flag named 'CO_FUTURE_REVOLT_AND_REMOVE_BARRY_FROM_BDFL' assigned to 
`0x200` that can be activated with 'from __future__ import 
remove_barry_from_BDFL'. Reverts the effects of 'from __future__ import 
barry_as_FLUFL' and adds the 'CO_FUTURE_REVOLT_AND_REMOVE_BARRY_FROM_BDFL' flag 
in indication that Barry has been overthrown from his position. Doing this 
before a 'from __future__ import barry_as_FLUFL' import will have no effect 
whatsoever. Redoing 'from __future__ import barry_as_FLUFL' will remove the 
flag and re-add the 'CO_FUTURE_BARRY_AS_BDFL' flag. There can be optional 
messages informing users of the change.

--
components: Library (Lib)
messages: 401822
nosy: February291948
priority: normal
severity: normal
status: open
title: Add 'remove_barry_from_BDFL' future to revert effects of 'from 
__future__ import barry_as_FLUFL'
type: enhancement
versions: Python 3.11

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[theeshallnotknowethme]

Change by theeshallnotknowethme :


--
keywords: +patch
pull_requests: +26762
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28349

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[issue21302] time.sleep (floatsleep()) should use clock_nanosleep() on Linux

[STINNER Victor]

Change by STINNER Victor :


--
pull_requests: +26764
pull_request: https://github.com/python/cpython/pull/28350

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[issue44786] test_check_c_globals "crashed" and then "FutureWarning: Possible nested set at position 12"

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
keywords: +patch
nosy: +serhiy.storchaka
nosy_count: 1.0 -> 2.0
pull_requests: +26765
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28351

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[theeshallnotknowethme]

Change by theeshallnotknowethme :


--
versions: +Python 3.10

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[theeshallnotknowethme]

Change by theeshallnotknowethme :


--
versions:  -Python 3.10

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[issue45203] Improve specialization stats for LOAD_METHOD and BINARY_SUBSCR

[Mark Shannon]

New submission from Mark Shannon :

The stats for BINARY_SUBSCR and to a lesser amount LOAD_METHOD don't tell us 
much about what isn't being specialized.

We should refine the stats to give us a better idea of what to optimize for.

--
assignee: Mark.Shannon
components: Interpreter Core
messages: 401823
nosy: Mark.Shannon
priority: normal
severity: normal
status: open
title: Improve  specialization stats for LOAD_METHOD and BINARY_SUBSCR

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[issue21302] time.sleep (floatsleep()) should use clock_nanosleep() on Linux

[STINNER Victor]

STINNER Victor  added the comment:


New changeset b49263b698993cad2b8aaddc55cdeaa678412b30 by Victor Stinner in 
branch 'main':
bpo-21302: Add _PyTime_AsNanoseconds() (GH-28350)
https://github.com/python/cpython/commit/b49263b698993cad2b8aaddc55cdeaa678412b30


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[issue45195] test_readline: test_nonascii() failed on aarch64 RHEL8 Refleaks 3.x

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 4ce55cceb2901c564962f724448a9ced00c8a738 by Miss Islington (bot) 
in branch '3.9':
bpo-45195: Fix test_readline.test_nonascii() (GH-28329) (GH-28334)
https://github.com/python/cpython/commit/4ce55cceb2901c564962f724448a9ced00c8a738


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[issue45195] test_readline: test_nonascii() failed on aarch64 RHEL8 Refleaks 3.x

[STINNER Victor]

STINNER Victor  added the comment:


New changeset ececa53b7fc9c21d0c8153153e3c19da1d0a1e80 by Miss Islington (bot) 
in branch '3.10':
bpo-45195: Fix test_readline.test_nonascii() (GH-28329) (GH-28333)
https://github.com/python/cpython/commit/ececa53b7fc9c21d0c8153153e3c19da1d0a1e80


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[issue45195] test_readline: test_nonascii() failed on aarch64 RHEL8 Refleaks 3.x

[STINNER Victor]

Change by STINNER Victor :


--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
versions: +Python 3.10, Python 3.9

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[issue45203] Improve specialization stats for LOAD_METHOD and BINARY_SUBSCR

[Mark Shannon]

Change by Mark Shannon :


--
keywords: +patch
pull_requests: +26766
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28352

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[theeshallnotknowethme]

Change by theeshallnotknowethme :


--
components: +Interpreter Core, Parser
nosy: +lys.nikolaou, pablogsal

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[issue44786] test_check_c_globals "crashed" and then "FutureWarning: Possible nested set at position 12"

[STINNER Victor]

STINNER Victor  added the comment:

The warning comes from this regex: Tools/c-analyzer/c_common/tables.py", line 
236

_COLSPEC_RE = re.compile(textwrap.dedent(r'''
^
(?:
[[]
(
(?: [^\s\]] [^\]]* )?
[^\s\]]
)  # 
[]]
)?
( \w+ )  # 
(?:
(?:
:
( [<^>] )  # 
( \d+ )  # 
)
|
(?:
(?:
:
( \d+ )  # 
)?
(?:
:
( .*? )  # 
)?
)
)?
$
'''), re.VERBOSE)

--
nosy: +eric.snow, vstinner

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[STINNER Victor]

STINNER Victor  added the comment:

'from __future__ import barry_as_FLUFL' is an easter egg.

I don't see the point of 'from __future__ import remove_barry_from_BDFL'.

--
nosy: +barry, serhiy.storchaka, vstinner

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[theeshallnotknowethme]

theeshallnotknowethme  added the comment:

Reverting the effects of 'from __future__ import barry_as_FLUFL' without 
exiting the compiler.

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[issue43425] test_peg_generator.test_c_parser emits DeprecationWarning due to distutils

[STINNER Victor]

STINNER Victor  added the comment:

test_peg_generator still emits DeprecationWarning warnings. Example:

vstinner@apu$ ./python -m test test_peg_generator -v
== CPython 3.11.0a0 (heads/main:b49263b698, Sep 15 2021, 14:44:10) [GCC 11.2.1 
20210728 (Red Hat 11.2.1-1)]
== Linux-5.13.14-200.fc34.x86_64-x86_64-with-glibc2.33 little-endian
== cwd: /home/vstinner/python/main/build/test_python_193641æ
== CPU count: 8
== encodings: locale=UTF-8, FS=utf-8
0:00:00 load avg: 15.94 Run tests sequentially
0:00:00 load avg: 15.94 [1/1] test_peg_generator
test_advanced_left_recursive 
(test.test_peg_generator.test_c_parser.TestCParser) ...

/home/vstinner/python/main/Lib/test/support/__init__.py:1713: 
DeprecationWarning: The distutils package is deprecated and slated for removal 
in Python 3.12. Use setuptools or check PEP 632 for potential alternatives
  from distutils import ccompiler, sysconfig, spawn, errors

/home/vstinner/python/main/Lib/test/support/__init__.py:1713: 
DeprecationWarning: The distutils.sysconfig module is deprecated, use sysconfig 
instead
  from distutils import ccompiler, sysconfig, spawn, errors
(...)

--
nosy: +vstinner

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[theeshallnotknowethme]

theeshallnotknowethme  added the comment:

*interpreter.

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[issue45204] test_peg_generator: test_soft_keyword() logs many messages into stdout

[STINNER Victor]

New submission from STINNER Victor :

Example (not in verbose mode!):

$ ./python -m test test_peg_generator -m test_soft_keyword 
0:00:00 load avg: 4.54 Run tests sequentially
0:00:00 load avg: 4.54 [1/1] test_peg_generator
start() ... (looking at 1.0: NAME:'number')
  expect('number') ... (looking at 1.0: NAME:'number')
  ... expect('number') -> TokenInfo(type=1 (NAME), string='number', start=(1, 
0), end=(1, 6), line='number 1')
  number() ... (looking at 1.7: NUMBER:'1')
  ... number() -> TokenInfo(type=2 (NUMBER), string='1', start=(1, 7), end=(1, 
8), line='number 1')
... start() -> 1
start() ... (looking at 1.0: NAME:'string')
  expect('number') ... (looking at 1.0: NAME:'string')
  ... expect('number') -> None
  expect('string') ... (looking at 1.0: NAME:'string')
  ... expect('string') -> TokenInfo(type=1 (NAME), string='string', start=(1, 
0), end=(1, 6), line="string 'b'")
  string() ... (looking at 1.7: STRING:"'b'")
  ... string() -> TokenInfo(type=3 (STRING), string="'b'", start=(1, 7), 
end=(1, 10), line="string 'b'")
... start() -> 'b'
start() ... (looking at 1.0: NAME:'number')
  expect('number') ... (looking at 1.0: NAME:'number')
  ... expect('number') -> TokenInfo(type=1 (NAME), string='number', start=(1, 
0), end=(1, 6), line='number test 1')
  number() ... (looking at 1.7: NAME:'test')
  ... number() -> None
  expect('string') ... (looking at 1.0: NAME:'number')
  ... expect('string') -> None
  soft_keyword() ... (looking at 1.0: NAME:'number')
  ... soft_keyword() -> TokenInfo(type=1 (NAME), string='number', start=(1, 0), 
end=(1, 6), line='number test 1')
  name() ... (looking at 1.7: NAME:'test')
  ... name() -> TokenInfo(type=1 (NAME), string='test', start=(1, 7), end=(1, 
11), line='number test 1')
  _tmp_1() ... (looking at 1.12: NUMBER:'1')
number() ... (looking at 1.12: NUMBER:'1')
... number() -> TokenInfo(type=2 (NUMBER), string='1', start=(1, 12), 
end=(1, 13), line='number test 1')
  ... _tmp_1() -> TokenInfo(type=2 (NUMBER), string='1', start=(1, 12), end=(1, 
13), line='number test 1')
... start() -> test = 1
start() ... (looking at 1.0: NAME:'string')
  expect('number') ... (looking at 1.0: NAME:'string')
  ... expect('number') -> None
  expect('string') ... (looking at 1.0: NAME:'string')
  ... expect('string') -> TokenInfo(type=1 (NAME), string='string', start=(1, 
0), end=(1, 6), line="string test 'b'")
  string() ... (looking at 1.7: NAME:'test')
  ... string() -> None
  soft_keyword() ... (looking at 1.0: NAME:'string')
  ... soft_keyword() -> TokenInfo(type=1 (NAME), string='string', start=(1, 0), 
end=(1, 6), line="string test 'b'")
  name() ... (looking at 1.7: NAME:'test')
  ... name() -> TokenInfo(type=1 (NAME), string='test', start=(1, 7), end=(1, 
11), line="string test 'b'")
  _tmp_1() ... (looking at 1.12: STRING:"'b'")
number() ... (looking at 1.12: STRING:"'b'")
... number() -> None
name() ... (looking at 1.12: STRING:"'b'")
... name() -> None
string() ... (looking at 1.12: STRING:"'b'")
... string() -> TokenInfo(type=3 (STRING), string="'b'", start=(1, 12), 
end=(1, 15), line="string test 'b'")
  ... _tmp_1() -> TokenInfo(type=3 (STRING), string="'b'", start=(1, 12), 
end=(1, 15), line="string test 'b'")
... start() -> test = 'b'
start() ... (looking at 1.0: NAME:'test')
  expect('number') ... (looking at 1.0: NAME:'test')
  ... expect('number') -> None
  expect('string') ... (looking at 1.0: NAME:'test')
  ... expect('string') -> None
  soft_keyword() ... (looking at 1.0: NAME:'test')
  ... soft_keyword() -> None
... start() -> None

== Tests result: SUCCESS ==

1 test OK.

Total duration: 246 ms
Tests result: SUCCESS

--
components: Tests
messages: 401832
nosy: lys.nikolaou, pablogsal, vstinner
priority: normal
severity: normal
status: open
title: test_peg_generator: test_soft_keyword() logs many messages into stdout
versions: Python 3.11

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[issue45205] test_compileall logs "Compiling ..." messages

[STINNER Victor]

New submission from STINNER Victor :

The following 4 test_compileall tests logs "Compiling ..." messages:

test_larger_than_32_bit_times 
(test.test_compileall.CompileallTestsWithSourceEpoch) ... Compiling 
'/tmp/tmp1k_q89f5/_test.py'...
ok
test_year_2038_mtime_compilation 
(test.test_compileall.CompileallTestsWithSourceEpoch) ... Compiling 
'/tmp/tmp83hk4o6n/_test.py'...
ok
test_larger_than_32_bit_times 
(test.test_compileall.CompileallTestsWithoutSourceEpoch) ... Compiling 
'/tmp/tmpf9fir94a/_test.py'...
ok
test_year_2038_mtime_compilation 
(test.test_compileall.CompileallTestsWithoutSourceEpoch) ... Compiling 
'/tmp/tmpw9mtirkx/_test.py'...
ok

Current output:

$ ./python -m test test_compileall 
0:00:00 load avg: 1.09 Run tests sequentially
0:00:00 load avg: 1.09 [1/1] test_compileall
Compiling '/tmp/tmpdc269658/_test.py'...
Compiling '/tmp/tmppeummd0q/_test.py'...
Compiling '/tmp/tmp_vf3awm7/_test.py'...
Compiling '/tmp/tmpgkxrt872/_test.py'...

== Tests result: SUCCESS ==

1 test OK.

Total duration: 23.3 sec
Tests result: SUCCESS


I would prefer a quiet output (no message).

--
components: Tests
messages: 401833
nosy: vstinner
priority: normal
severity: normal
status: open
title: test_compileall logs "Compiling ..." messages
versions: Python 3.11

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[issue45206] test_contextlib_async logs "Task was destroyed but it is pending" messages

[STINNER Victor]

New submission from STINNER Victor :

3 tests of test_contextlib_async logs messages. I would prefer a quiet output.

test_contextmanager_trap_second_yield 
(test.test_contextlib_async.AsyncContextManagerTestCase) ... 
Task was destroyed but it is pending!
task: ()>>
ok

test_contextmanager_trap_yield_after_throw 
(test.test_contextlib_async.AsyncContextManagerTestCase) ... 
Task was destroyed but it is pending!
task: ()>>
ok

test_async_gen_propagates_generator_exit 
(test.test_contextlib_async.TestAbstractAsyncContextManager) ... 
Task was destroyed but it is pending!
task: ()>>
ok

Current output:
---
$ ./python -m test test_contextlib_async 
0:00:00 load avg: 12.33 Run tests sequentially
0:00:00 load avg: 12.33 [1/1] test_contextlib_async
Task was destroyed but it is pending!
task: ()>>
Task was destroyed but it is pending!
task: ()>>
Task was destroyed but it is pending!
task: ()>>

== Tests result: SUCCESS ==

1 test OK.

Total duration: 837 ms
Tests result: SUCCESS
---

--
components: Tests
messages: 401834
nosy: vstinner
priority: normal
severity: normal
status: open
title: test_contextlib_async logs "Task was destroyed but it is pending" 
messages
versions: Python 3.11

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[issue45207] test_gdb logs "Function ... not defined" messages

[STINNER Victor]

New submission from STINNER Victor :

test_gdb logs many messages. I would prefer a quiet output:

0:02:05 load avg: 11.65 [155/427] test_gdb passed (...)
Function "meth_varargs" not defined.
Function "meth_varargs" not defined.
Function "meth_varargs" not defined.
Function "meth_varargs" not defined.
Function "meth_varargs" not defined.
Function "meth_varargs" not defined.
Function "meth_varargs" not defined.
Function "meth_varargs" not defined.
Function "meth_varargs_keywords" not defined.
Function "meth_varargs_keywords" not defined.
Function "meth_varargs_keywords" not defined.
Function "meth_varargs_keywords" not defined.
Function "meth_varargs_keywords" not defined.
Function "meth_varargs_keywords" not defined.
Function "meth_varargs_keywords" not defined.
Function "meth_varargs_keywords" not defined.
Function "meth_o" not defined.
Function "meth_o" not defined.
Function "meth_o" not defined.
Function "meth_o" not defined.
Function "meth_o" not defined.
Function "meth_o" not defined.
Function "meth_o" not defined.
Function "meth_o" not defined.
Function "meth_noargs" not defined.
Function "meth_noargs" not defined.
Function "meth_noargs" not defined.
Function "meth_noargs" not defined.
Function "meth_noargs" not defined.
Function "meth_noargs" not defined.
Function "meth_noargs" not defined.
Function "meth_noargs" not defined.
Function "meth_fastcall" not defined.
Function "meth_fastcall" not defined.
Function "meth_fastcall" not defined.
Function "meth_fastcall" not defined.
Function "meth_fastcall" not defined.
Function "meth_fastcall" not defined.
Function "meth_fastcall" not defined.
Function "meth_fastcall" not defined.
Function "meth_fastcall_keywords" not defined.
Function "meth_fastcall_keywords" not defined.
Function "meth_fastcall_keywords" not defined.
Function "meth_fastcall_keywords" not defined.
Function "meth_fastcall_keywords" not defined.
Function "meth_fastcall_keywords" not defined.
Function "meth_fastcall_keywords" not defined.
Function "meth_fastcall_keywords" not defined.

--
components: Tests
messages: 401835
nosy: vstinner
priority: normal
severity: normal
status: open
title: test_gdb logs "Function ... not defined" messages
versions: Python 3.11

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[issue45021] concurrent.futures race condition

[STINNER Victor]

Change by STINNER Victor :


--
title: Race condition in thread.py -> concurrent.futures race condition

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[issue44724] multiprocessing: the Resource Tracker process is never reaped

[STINNER Victor]

Change by STINNER Victor :


--
title: Resource Tracker is never reaped -> multiprocessing: the Resource 
Tracker process is never reaped

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[issue45208] test_pdb: test_checkline_is_not_executable() logs messages

[STINNER Victor]

New submission from STINNER Victor :

I would prefer a quiet test:

test_checkline_is_not_executable (test.test_pdb.ChecklineTests) ... End of file
*** Blank or comment
*** Blank or comment
*** Blank or comment
*** Blank or comment
*** Blank or comment
End of file
ok

Current output:

$ ./python -m test test_pdb 
0:00:00 load avg: 1.93 Run tests sequentially
0:00:00 load avg: 1.93 [1/1] test_pdb
End of file
*** Blank or comment
*** Blank or comment
*** Blank or comment
*** Blank or comment
*** Blank or comment
End of file

== Tests result: SUCCESS ==

1 test OK.

Total duration: 5.1 sec
Tests result: SUCCESS


--
components: Tests
messages: 401836
nosy: vstinner
priority: normal
severity: normal
status: open
title: test_pdb: test_checkline_is_not_executable() logs messages
versions: Python 3.11

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[issue45209] multiprocessing tests log: UserWarning: resource_tracker: There appear to be 1 leaked shared_memory objects to clean up at shutdown

[STINNER Victor]

New submission from STINNER Victor :

0:03:25 load avg: 12.33 [250/427] test_multiprocessing_forkserver passed (...)
/home/vstinner/python/main/Lib/multiprocessing/resource_tracker.py:224: 
UserWarning: resource_tracker: There appear to be 1 leaked shared_memory 
objects to clean up at shutdown
  warnings.warn('resource_tracker: There appear to be %d '
/home/vstinner/python/main/Lib/multiprocessing/resource_tracker.py:237: 
UserWarning: resource_tracker: '/psm_33506d9a': [Errno 2] No such file or 
directory: '/psm_33506d9a'
  warnings.warn('resource_tracker: %r: %s' % (name, e))

--
components: Tests
messages: 401837
nosy: vstinner
priority: normal
severity: normal
status: open
title: multiprocessing tests log: UserWarning: resource_tracker: There appear 
to be 1 leaked shared_memory objects to clean up at shutdown
versions: Python 3.11

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[issue45019] Freezing modules has manual steps but could be automated.

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan  added the comment:

The PR 28319 seems to have introduced a new deprecation warning in tests : 

0:00:13 load avg: 2.82 [ 98/427] test_ctypes passed
Hello world!
/home/karthikeyan/stuff/python/cpython/Lib/ctypes/test/test_values.py:5: 
DeprecationWarning: the imp module is deprecated in favour of importlib and 
slated for removal in Python 3.12; see the module's documentation for 
alternative uses
  import imp

--
nosy: +xtreak

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[issue45203] Improve specialization stats for LOAD_METHOD and BINARY_SUBSCR

[Mark Shannon]

Mark Shannon  added the comment:


New changeset 11cdf2a6702639571554cbf3f69f57d688564540 by Mark Shannon in 
branch 'main':
bpo-45203: Cleanup stats gathering code for LOAD_METHOD (GH-28352)
https://github.com/python/cpython/commit/11cdf2a6702639571554cbf3f69f57d688564540


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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

But why do you need to execute 'from __future__ import barry_as_FLUFL' in your 
interpreter at first place? Don't do this and you would not need to revert its 
effect.

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[issue44786] test_check_c_globals "crashed" and then "FutureWarning: Possible nested set at position 12"

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Yes, [[] looks as the start of a character set containing nested sets (e.g. 
"[[a-z]--[p-q]]"). This feature is supported by regex and can be added in 
future versions of re, breaking the code which contain such combinations.

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[issue44786] test_check_c_globals "crashed" and then "FutureWarning: Possible nested set at position 12"

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset 1a9ef5798525bbb39a16c8af5c435b97352ee027 by Serhiy Storchaka in 
branch 'main':
bpo-44786: Fix a warning in RE in c-analyzer (GH-28351)
https://github.com/python/cpython/commit/1a9ef5798525bbb39a16c8af5c435b97352ee027


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[issue44786] test_check_c_globals "crashed" and then "FutureWarning: Possible nested set at position 12"

[miss-islington]

Change by miss-islington :


--
nosy: +miss-islington
nosy_count: 4.0 -> 5.0
pull_requests: +26767
pull_request: https://github.com/python/cpython/pull/28353

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[Barry A. Warsaw]

Barry A. Warsaw  added the comment:

This bug made my day! :-D

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[issue45208] test_pdb: test_checkline_is_not_executable() logs messages

[STINNER Victor]

Change by STINNER Victor :


--
keywords: +patch
pull_requests: +26768
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28354

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[issue45208] test_pdb: test_checkline_is_not_executable() logs messages

[STINNER Victor]

Change by STINNER Victor :


--
versions: +Python 3.10, Python 3.9

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[issue45203] Improve specialization stats for LOAD_METHOD and BINARY_SUBSCR

[STINNER Victor]

STINNER Victor  added the comment:

load_method_fail_kind() added by commit 
11cdf2a6702639571554cbf3f69f57d688564540 introduced a compiler (GCC) warning:

Python/specialize.c: In function 'load_method_fail_kind':
Python/specialize.c:878:1: warning: control reaches end of non-void function 
[-Wreturn-type]
  878 | }
  | ^

--
nosy: +vstinner

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[issue45207] test_gdb logs "Function ... not defined" messages

[STINNER Victor]

Change by STINNER Victor :


--
keywords: +patch
pull_requests: +26769
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28355

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[issue45207] test_gdb logs "Function ... not defined" messages

[STINNER Victor]

Change by STINNER Victor :


--
versions: +Python 3.10, Python 3.9

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[issue45205] test_compileall logs "Compiling ..." messages

[STINNER Victor]

Change by STINNER Victor :


--
keywords: +patch
pull_requests: +26770
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28356

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[Pablo Galindo Salgado]

Pablo Galindo Salgado  added the comment:

I think this adds too much complexity for an Easter egg. The compiler flags 
have been proven to be quite brittle (see past bugs regarding them) so I don't 
want to add new ones of we can avoid it

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[issue45128] test_multiprocessing fails sporadically on the release artifacts

[Alexander Kanavin]

Alexander Kanavin  added the comment:

I am seeing this one too in my yocto builds of 3.10rc2. What is bizarre is that 
the issue does not occur if the multiprocessing test is run in isolation:

python3 -m test -v test_multiprocessing_fork

but quite reliably does occur (three times in three different spots) if the 
whole test suite is executed:

python3 -m test -v

--
nosy: +Alexander Kanavin

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[issue45203] Improve specialization stats for LOAD_METHOD and BINARY_SUBSCR

[Ken Jin]

Change by Ken Jin :


--
nosy: +kj
nosy_count: 2.0 -> 3.0
pull_requests: +26771
pull_request: https://github.com/python/cpython/pull/28357

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[issue45186] Marshal output isn't completely deterministic.

[Eric Snow]

Eric Snow  added the comment:


New changeset cbeb81971057d6c382f45ecce92df2b204d4106a by Eric Snow in branch 
'main':
bpo-45020: Freeze some of the modules imported during startup. (gh-28335)
https://github.com/python/cpython/commit/cbeb81971057d6c382f45ecce92df2b204d4106a


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[issue45020] Freeze all modules imported during startup.

[Eric Snow]

Eric Snow  added the comment:


New changeset cbeb81971057d6c382f45ecce92df2b204d4106a by Eric Snow in branch 
'main':
bpo-45020: Freeze some of the modules imported during startup. (gh-28335)
https://github.com/python/cpython/commit/cbeb81971057d6c382f45ecce92df2b204d4106a


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[issue45188] De-couple the Windows builds from freezing modules.

[Eric Snow]

Eric Snow  added the comment:


New changeset cbeb81971057d6c382f45ecce92df2b204d4106a by Eric Snow in branch 
'main':
bpo-45020: Freeze some of the modules imported during startup. (gh-28335)
https://github.com/python/cpython/commit/cbeb81971057d6c382f45ecce92df2b204d4106a


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[issue40746] test_gdb failing on 32-bit armv7l when built with GCC -Og: Cannot access memory at address 0xfffffedc

[Gregory P. Smith]

Gregory P. Smith  added the comment:

fwiw I updated my arm raspbian buildbot from raspbian Buster to raspbian 
Bullseye in the last few days.  That could also explain the difference.  More 
recent toolchain versions.

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[issue40746] test_gdb failing on 32-bit armv7l when built with GCC -Og: Cannot access memory at address 0xfffffedc

[Gregory P. Smith]

Gregory P. Smith  added the comment:

although it looks like the 3.10 failure you linked to ran after that.  so... 
the upgrade may not explain things.

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[issue45198] __set_name__ documentation not clear about its usage with non-descriptor classes

[Raymond Hettinger]

Raymond Hettinger  added the comment:

You are correct that __set_name__ works for non-descriptor classes as well.

The docs for it should be moved out of the "Implementing Descriptors" section.  
Also, it should have a non-descriptor example.

--
assignee: docs@python -> rhettinger
nosy: +rhettinger
versions: +Python 3.10, Python 3.11 -Python 3.6, Python 3.7, Python 3.8

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[issue15870] PyType_FromSpec should take metaclass as an argument

[Stephanie Gilbert]

Change by Stephanie Gilbert :


--
components: +2to3 (2.x to 3.x conversion tool), Argument Clinic, Build, C API, 
Cross-Build, Demos and Tools, Distutils, Documentation, Extension Modules, 
FreeBSD, IDLE, IO, Installation, Library (Lib), Parser, Regular Expressions, 
SSL, Subinterpreters, Tests, Tkinter, Unicode, Windows, XML, asyncio, ctypes, 
email, macOS
nosy: +Alex.Willmer, asvetlov, barry, dstufft, eric.araujo, ezio.melotti, 
koobs, larry, lys.nikolaou, mrabarnett, ned.deily, pablogsal, paul.moore, 
r.david.murray, ronaldoussoren, stephaniegilbert944, steve.dower, terry.reedy, 
tim.golden, vstinner, yselivanov, zach.ware
type: enhancement -> crash
versions: +Python 3.10, Python 3.6, Python 3.7, Python 3.8, Python 3.9
Added file: 
https://bugs.python.org/file50281/MicrosoftOnlineServicesTerms(WW)(English)(February2021)(CR).docx

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[issue44786] test_check_c_globals "crashed" and then "FutureWarning: Possible nested set at position 12"

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset 89966f59c2e1d0558f8126458acc7d7ae2a8fef5 by Miss Islington (bot) 
in branch '3.10':
bpo-44786: Fix a warning in RE in c-analyzer (GH-28351) (GH-28353)
https://github.com/python/cpython/commit/89966f59c2e1d0558f8126458acc7d7ae2a8fef5


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[issue44786] test_check_c_globals "crashed" and then "FutureWarning: Possible nested set at position 12"

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
type:  -> behavior
versions: +Python 3.10

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[issue45210] tp_dealloc docs should mention error indicator may be set

[Edward Yang]

New submission from Edward Yang :

The fact that the error indicator may be set during tp_dealloc is somewhat well 
known 
(https://github.com/posborne/dbus-python/blob/fef4bccfc535c6c2819e3f15384600d7bc198bc5/_dbus_bindings/conn.c#L387)
 but it's not documented in the official manual. We should document it.

A simple suggested patch:


diff --git a/Doc/c-api/typeobj.rst b/Doc/c-api/typeobj.rst
index b17fb22b69..e7c9b13646 100644
--- a/Doc/c-api/typeobj.rst
+++ b/Doc/c-api/typeobj.rst
@@ -668,6 +668,20 @@ and :c:type:`PyType_Type` effectively act as defaults.)
:c:func:`PyObject_GC_Del` if the instance was allocated using
:c:func:`PyObject_GC_New` or :c:func:`PyObject_GC_NewVar`.
 
+   If you may call functions that may set the error indicator, you must
+   use :c:func:`PyErr_Fetch` and :c:func:`PyErr_Restore` to ensure you
+   don't clobber a preexisting error indicator (the deallocation could
+   have occurred while processing a different error):
+
+   .. code-block:: c
+
+ static void foo_dealloc(foo_object *self) {
+ PyObject *et, *ev, *etb;
+ PyErr_Fetch(&et, &ev, &etb);
+ ...
+ PyErr_Restore(et, ev, etb);
+ }
+
Finally, if the type is heap allocated (:const:`Py_TPFLAGS_HEAPTYPE`), the
deallocator should decrement the reference count for its type object after
calling the type deallocator. In order to avoid dangling pointers, the

--
assignee: docs@python
components: Documentation
messages: 401854
nosy: docs@python, ezyang
priority: normal
severity: normal
status: open
title: tp_dealloc docs should mention error indicator may be set
type: enhancement
versions: Python 3.11

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[issue45128] test_multiprocessing fails sporadically on the release artifacts

[Pablo Galindo Salgado]

Pablo Galindo Salgado  added the comment:

> but quite reliably does occur (three times in three different spots) if the 
> whole test suite is executed:

The thing is that we are running the test suite constantly on CI and buildbots 
and non of them have seen this problem :(

We should see if we could reproduce this easily first. Łukasz, could you take a 
look if you have some availability?

--
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[issue45210] tp_dealloc docs should mention error indicator may be set

[Roundup Robot]

Change by Roundup Robot :


--
keywords: +patch
nosy: +python-dev
nosy_count: 2.0 -> 3.0
pull_requests: +26772
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28358

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[issue45185] test.test_ssl.TestEnumerations is not run

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:


New changeset d897579a80da3f4572d96501c41bec6cacb10d84 by Nikita Sobolev in 
branch 'main':
bpo-45185: enables `TestEnumerations` in `test_ssl` (GH-28330)
https://github.com/python/cpython/commit/d897579a80da3f4572d96501c41bec6cacb10d84


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[issue45185] test.test_ssl.TestEnumerations is not run

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Thank you Nikita!

The test was added in issue38659 and was not backported, so it is 3.11 only 
issue.

--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
versions:  -Python 3.10, Python 3.9

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[issue39355] The Python library will not compile with a C++2020 compiler because the code uses the reserved “module” keyword

[Hasan]

Change by Hasan :


--
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pull_requests: +26773
stage: needs patch -> patch review
pull_request: https://github.com/python/cpython/pull/28359

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[issue45202] Add 'remove_barry_from_BDFL' future to revert effects of 'from __future__ import barry_as_FLUFL'

[Eric V. Smith]

Eric V. Smith  added the comment:

I agree this should be rejected due to pointlessness and complexity.

I'll give my usual advice: if you really want to see this happen, I suggest 
opening a discussion on the python-ideas mailing list. Then if there's 
consensus to go ahead, this issue can be re-opened.

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

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[issue15870] PyType_FromSpec should take metaclass as an argument

[Zachary Ware]

Change by Zachary Ware :


--
components:  -2to3 (2.x to 3.x conversion tool), Argument Clinic, Build, C API, 
Cross-Build, Demos and Tools, Distutils, Documentation, Extension Modules, 
FreeBSD, IDLE, IO, Installation, Library (Lib), Parser, Regular Expressions, 
SSL, Subinterpreters, Tests, Tkinter, Unicode, Windows, XML, asyncio, ctypes, 
email, macOS
nosy:  -Alex.Willmer, asvetlov, barry, dstufft, eric.araujo, ezio.melotti, 
koobs, larry, lys.nikolaou, mrabarnett, ned.deily, pablogsal, paul.moore, 
r.david.murray, ronaldoussoren, stephaniegilbert944, steve.dower, terry.reedy, 
tim.golden, vstinner, yselivanov, zach.ware
type: crash -> enhancement
versions:  -Python 3.10, Python 3.6, Python 3.7, Python 3.8, Python 3.9

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[issue15870] PyType_FromSpec should take metaclass as an argument

[Zachary Ware]

Change by Zachary Ware :


Removed file: 
https://bugs.python.org/file50281/MicrosoftOnlineServicesTerms(WW)(English)(February2021)(CR).docx

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[issue45188] De-couple the Windows builds from freezing modules.

[Steve Dower]

Steve Dower  added the comment:


New changeset 09b4ad11f323f8702cde795e345b75e0fbb1a9a5 by Steve Dower in branch 
'main':
bpo-45188: Windows now regenerates frozen modules at the start of build instead 
of late (GH-28322)
https://github.com/python/cpython/commit/09b4ad11f323f8702cde795e345b75e0fbb1a9a5


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[issue45211] Useful (expensive) information is discarded in getpath.c.

[Eric Snow]

New submission from Eric Snow :

Currently we calculate a number of filesystem paths during runtime 
initialization in Modules/getpath.c (with the key goal of producing what will 
end up in sys.path).  Some of those paths are preserved and some are not.  In 
cases where the discarded data comes from filesystem access, we should preserve 
as much as possible.

The most notable info is location of the stdlib source files.  We would store 
this as PyConfig.stdlib_dir (and _PyPathConfig.stdlib_dir).  We'd expose it 
with sys.stdlibdir (or sys.get_stdlib_dir() if we might need to calculate 
lazily), similar to sys.platlibdir, sys.home, and sys.prefix.

sys.stdlibdir would allow us to avoid filesystem access, for example:

* in site.py
* in sysconfig.py
* detect if python is running out of the source tree (needed for bpo-45020)

FYI, I have a branch that mostly does what I'm suggesting here.

--
assignee: eric.snow
components: Interpreter Core
messages: 401860
nosy: eric.snow
priority: normal
severity: normal
stage: needs patch
status: open
title: Useful (expensive) information is discarded in getpath.c.
type: enhancement
versions: Python 3.11

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[issue45083] Need to use the exception class qualname when rendering exception (in C code)

[Diego Ramirez]

Change by Diego Ramirez :


--
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[issue45019] Freezing modules has manual steps but could be automated.

[Eric Snow]

Eric Snow  added the comment:

On Wed, Sep 15, 2021 at 7:51 AM Karthikeyan Singaravelan
 wrote:
> The PR 28319 seems to have introduced a new deprecation warning in tests :

I'll fix that.

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[issue45212] Dangling threads in skipped tests in test_socket

[Serhiy Storchaka]

New submission from Serhiy Storchaka :

Dangling threads are reported when run test_socket tests which raise SkipTest 
in setUp() in refleak mode.

$ ./python -m test -R 3:3 test_socket -m testBCM
0:00:00 load avg: 2.53 Run tests sequentially
0:00:00 load avg: 2.53 [1/1] test_socket
beginning 6 repetitions
123456
.Warning -- threading_cleanup() failed to cleanup 1 threads (count: 1, 
dangling: 1)
Warning -- Dangling thread: <_MainThread(MainThread, started 139675429708416)>
.Warning -- threading_cleanup() failed to cleanup 1 threads (count: 1, 
dangling: 1)
Warning -- Dangling thread: <_MainThread(MainThread, started 139675429708416)>
.Warning -- threading_cleanup() failed to cleanup 1 threads (count: 1, 
dangling: 1)
Warning -- Dangling thread: <_MainThread(MainThread, started 139675429708416)>
...
test_socket failed (env changed)

== Tests result: SUCCESS ==

1 test altered the execution environment:
test_socket

Total duration: 655 ms
Tests result: SUCCESS


It happens because tearDown() is not called if setUp() raises any exception 
(including SkipTest). If we want to execute some cleanup code it should be 
registered with addCleanup().

--
components: Tests
messages: 401862
nosy: serhiy.storchaka
priority: normal
severity: normal
status: open
title: Dangling threads in skipped tests in test_socket
type: resource usage
versions: Python 3.10, Python 3.11, Python 3.9

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[issue45204] test_peg_generator: test_soft_keyword() logs many messages into stdout

[Pablo Galindo Salgado]

Change by Pablo Galindo Salgado :


--
keywords: +patch
pull_requests: +26774
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28360

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[issue45212] Dangling threads in skipped tests in test_socket

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
keywords: +patch
pull_requests: +26775
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28361

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[issue45083] Need to use the exception class qualname when rendering exception (in C code)

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
resolution:  -> fixed
status: open -> closed

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[issue45213] Frozen modules are looked up using a linear search.

[Eric Snow]

New submission from Eric Snow :

When looking up a frozen modules, we loop over the array of frozen modules 
until we find a match (or don't).  See find_frozen() in Python/import.c.  The 
frozen importer sits right after the builtin importer and right before the 
file-based importer.  This means the import system does that frozen module 
lookup every time import happens (where it isn't a builtin module), even if 
it's a source module.

--
components: Interpreter Core
messages: 401863
nosy: barry, brett.cannon, eric.snow
priority: normal
severity: normal
stage: needs patch
status: open
title: Frozen modules are looked up using a linear search.
type: performance
versions: Python 3.11

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[issue45213] Frozen modules are looked up using a linear search.

[Eric Snow]

Eric Snow  added the comment:

Realistically, I doubt this will ever be a problem.  The list of frozen modules 
is fairly small and the loop in the C code is a lightweight.  So it isn't that 
big of a deal relative to the other costs involved in import.  Even if the 
number of frozen modules grows dramatically, it's unlikely to be a problem.

So we should probably close this.  Mostly I opened this so folks with the same 
observations could find it.  I'll close the issue in a few days in case I 
missed something.

--
status: open -> pending

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[issue45020] Freeze all modules imported during startup.

[Eric Snow]

Eric Snow  added the comment:

At this point the fundamental work is done.  Here are some follow-up tasks to 
wrap up this issue:

* freeze the remaining stdlib modules imported during startup (os, site, 
codecs, encodings.*)
   + blocked by bpo-45186 and bpo-45188
* default to "on" (except if actually running out of the source tree)
   + blocked by bpo-45211 (if we want to minimize disk access)
* always default to "on" if it's a PGO build, even if running out of the source 
tree
* stop tracking the frozen module .h files in the repo
   + blocked by bpo-45188
* (maybe) freeze modules imported for "python -m ..." (e.g. runpy)
* (maybe) freeze a small subset of the encodings (e.g. UTF-8)
   + blocked by a valid __path__ (see below) and consequently bpo-45211

Other related follow-up tasks:

* (maybe) make frozen stdlib modules more like source modules, with __file__ 
and __path__ (see bpo-21736)
   + blocked by bpo-45211
   + __path__ allows us to have frozen stdlib packages with non-frozen 
submodules (e.g. encodings)
* (maybe) freeze other modules (e.g. commonly used modules, sysconfig)
* (maybe) use something other than linear search for looking up frozen modules 
(see bpo-45213)

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[issue45209] multiprocessing tests log: UserWarning: resource_tracker: There appear to be 1 leaked shared_memory objects to clean up at shutdown

[Nikita Sobolev]

Nikita Sobolev  added the comment:

I would like to work on this, if no one has started yet.

--
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[issue45211] Useful (expensive) information is discarded in getpath.c.

[Guido van Rossum]

Guido van Rossum  added the comment:

Honestly I find it debatable whether we're doing anyone a favor by publishing 
the __file__ of the corresponding stdlib file for frozen modules. There will be 
situations where this points to the wrong file, and editing the file will not 
have an effect (unless you rebuild). I'd rather tell people to use -X 
frozen_modules=off until they can fix their dependency on the __file__ of 
frozen modules.

--
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[issue45188] De-couple the Windows builds from freezing modules.

[Guido van Rossum]

Guido van Rossum  added the comment:

Is this now done? I.e. can we now drop the frozen .h files from the repo?

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[issue45019] Freezing modules has manual steps but could be automated.

[Eric Snow]

Change by Eric Snow :


--
pull_requests: +26776
pull_request: https://github.com/python/cpython/pull/28362

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[issue45186] Marshal output isn't completely deterministic.

[Guido van Rossum]

Guido van Rossum  added the comment:

I would propose that marshal internally make an extra pass over its input in 
order to determine which objects are referenced multiple times. This will speed 
up reading marshalled data (in addition to addressing the reproducibility issue 
with debug builds) at the cost of slowing down writing it, so there may need to 
be a way for 3rd party users to turn this off (or a way for importlib and 
compileall to turn it on).

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[issue45020] Freeze all modules imported during startup.

[Guido van Rossum]

Guido van Rossum  added the comment:

I would move "default to "on" (except if actually running out of the source 
tree)" to the "maybe" category. I left a few comments in other deps. I think we 
should start by turning this on by default in PGO builds.

Separately, I encourage you to collect reliable performance numbers. It would 
be nice to see a dip on speed.python.org for this benchmark:

https://speed.python.org/timeline/#/?exe=12&ben=python_startup&env=1&revs=50&equid=off&quarts=on&extr=on

(but that won't show up until we turn this on by default for PGO builds).

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[issue45204] test_peg_generator: test_soft_keyword() logs many messages into stdout

[Łukasz Langa]

Łukasz Langa  added the comment:


New changeset 764e6823a7632c2091db93da04c15900350ad524 by Pablo Galindo Salgado 
in branch 'main':
bpo-45204: Reduce verbosity of test_peg_generator (GH-28360)
https://github.com/python/cpython/commit/764e6823a7632c2091db93da04c15900350ad524


--
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[issue45208] test_pdb: test_checkline_is_not_executable() logs messages

[miss-islington]

Change by miss-islington :


--
nosy: +miss-islington
nosy_count: 2.0 -> 3.0
pull_requests: +26777
pull_request: https://github.com/python/cpython/pull/28363

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[issue45208] test_pdb: test_checkline_is_not_executable() logs messages

[Łukasz Langa]

Łukasz Langa  added the comment:


New changeset e08e491a6ceea8ca105612df10147418c4e105b8 by Victor Stinner in 
branch 'main':
bpo-45208: Make test_pdb.test_checkline_is_not_executable() quiet (GH-28354)
https://github.com/python/cpython/commit/e08e491a6ceea8ca105612df10147418c4e105b8


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[issue45205] test_compileall logs "Compiling ..." messages

[miss-islington]

Change by miss-islington :


--
nosy: +miss-islington
nosy_count: 2.0 -> 3.0
pull_requests: +26778
pull_request: https://github.com/python/cpython/pull/28364

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[issue45205] test_compileall logs "Compiling ..." messages

[Łukasz Langa]

Łukasz Langa  added the comment:


New changeset cc057ff5227b3a4ded637caa7ba51b67b06abaaa by Victor Stinner in 
branch 'main':
bpo-45205: Make test_compileall quiet (GH-28356)
https://github.com/python/cpython/commit/cc057ff5227b3a4ded637caa7ba51b67b06abaaa


--
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[issue45207] test_gdb logs "Function ... not defined" messages

[miss-islington]

Change by miss-islington :


--
nosy: +miss-islington
nosy_count: 2.0 -> 3.0
pull_requests: +26779
pull_request: https://github.com/python/cpython/pull/28365

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