gh-140513: Fail to compile if `_Py_TAIL_CALL_INTERP` is set but `preserve_none` and `musttail` do not exist. by XChaitanyaX · Pull Request #140548 · python/cpython

XChaitanyaX · 2025-10-24T13:57:30Z

Issue: We should fail to compile if _Py_TAIL_CALL_INTERP is set but preserve_none and musttail do not exist. #140513

Fidget-Spinner · 2025-10-24T18:32:04Z

Can you add a news entry please?

Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>

efimov-mikhail

LGTM

chris-eibl

Lgtm

Fidget-Spinner

Let's not backport this to 3.14, as it would break existing builds that have GCC 15 which has musttail but no preserve_none

miss-islington-app · 2025-11-01T16:41:27Z

Thanks @XChaitanyaX for the PR, and @Fidget-Spinner for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖

miss-islington-app · 2025-11-01T16:41:30Z

Sorry, @XChaitanyaX and @Fidget-Spinner, I could not cleanly backport this to 3.14 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 2f60b8f02fe7cb83dd589d9664460082c13e85ef 3.14

bedevere-bot · 2025-11-01T17:28:06Z

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot ARM64 macOS 3.x (tier-2) has failed when building commit 2f60b8f.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/725/builds/12240) and take a look at the build logs.
Check if the failure is related to this commit (2f60b8f) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/725/builds/12240

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58856), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58858), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1546, in ftp_open
fp, retrlen = fw.retrfile(file, type)
~~~~~~~~~~~^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1826, in retrfile
conn, retrlen =self.ftp.ntransfercmd(cmd)
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/ftplib.py", line 354, in ntransfercmd
conn = socket.create_connection((host, port), self.timeout,
source_address=self.source_address)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 879, in create_connectionraise exceptions[0]
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 864, in create_connection
sock.connect(sa)
~~~~~~~~~~~~^^^^TimeoutError: [Errno 60] Operation timed out
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/support/__init__.py", line 847, in gc_collect
gc.collect()
~~~~~~~~~~^^ResourceWarning: unclosed <socket.socket fd=7, family=2, type=1, proto=6, laddr=('192.168.0.101', 58847), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58853), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/support/__init__.py", line 847, in gc_collect
gc.collect()
~~~~~~~~~~^^ResourceWarning: unclosed <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58853), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58860), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/support/__init__.py", line 847, in gc_collect
gc.collect()
~~~~~~~~~~^^ResourceWarning: unclosed <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58860), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58867), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/support/__init__.py", line 847, in gc_collect
gc.collect()
~~~~~~~~~~^^ResourceWarning: unclosed <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58867), raddr=('68.183.26.59', 21)>
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58849), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58851), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1546, in ftp_open
fp, retrlen = fw.retrfile(file, type)
~~~~~~~~~~~^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1826, in retrfile
conn, retrlen =self.ftp.ntransfercmd(cmd)
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/ftplib.py", line 354, in ntransfercmd
conn = socket.create_connection((host, port), self.timeout,
source_address=self.source_address)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 879, in create_connectionraise exceptions[0]
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 864, in create_connection
sock.connect(sa)
~~~~~~~~~~~~^^^^TimeoutError: [Errno 60] Operation timed out
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58862), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=11, family=2, type=1, proto=6, laddr=('192.168.0.101', 58864), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1546, in ftp_open
fp, retrlen = fw.retrfile(file, type)
~~~~~~~~~~~^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1826, in retrfile
conn, retrlen =self.ftp.ntransfercmd(cmd)
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/ftplib.py", line 354, in ntransfercmd
conn = socket.create_connection((host, port), self.timeout,
source_address=self.source_address)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 879, in create_connectionraise exceptions[0]
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 864, in create_connection
sock.connect(sa)
~~~~~~~~~~~~^^^^TimeoutError: [Errno 60] Operation timed out
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1546, in ftp_open
fp, retrlen = fw.retrfile(file, type)
~~~~~~~~~~~^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1826, in retrfile
conn, retrlen =self.ftp.ntransfercmd(cmd)
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/ftplib.py", line 354, in ntransfercmd
conn = socket.create_connection((host, port), self.timeout,
source_address=self.source_address)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 879, in create_connectionraise exceptions[0]
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 864, in create_connection
sock.connect(sa)
~~~~~~~~~~~~^^^^TimeoutError: [Errno 60] Operation timed out
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=6, family=2, type=1, proto=6, laddr=('192.168.0.101', 58793), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58796), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1546, in ftp_open
fp, retrlen = fw.retrfile(file, type)
~~~~~~~~~~~^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1826, in retrfile
conn, retrlen =self.ftp.ntransfercmd(cmd)
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/ftplib.py", line 354, in ntransfercmd
conn = socket.create_connection((host, port), self.timeout,
source_address=self.source_address)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 879, in create_connectionraise exceptions[0]
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 864, in create_connection
sock.connect(sa)
~~~~~~~~~~~~^^^^TimeoutError: [Errno 60] Operation timed out
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/support/__init__.py", line 847, in gc_collect
gc.collect()
~~~~~~~~~~^^ResourceWarning: unclosed <socket.socket fd=6, family=2, type=1, proto=6, laddr=('192.168.0.101', 58798), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58804), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/support/__init__.py", line 847, in gc_collect
gc.collect()
~~~~~~~~~~^^ResourceWarning: unclosed <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58804), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58811), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/support/__init__.py", line 847, in gc_collect
gc.collect()
~~~~~~~~~~^^ResourceWarning: unclosed <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58811), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58818), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/support/__init__.py", line 847, in gc_collect
gc.collect()
~~~~~~~~~~^^ResourceWarning: unclosed <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58818), raddr=('68.183.26.59', 21)>
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58802), raddr=('68.183.26.59', 21)>
skipped "Resource 'ftp://www.pythontest.net/' is not available"
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58800), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58802), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1546, in ftp_open
fp, retrlen = fw.retrfile(file, type)
~~~~~~~~~~~^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1826, in retrfile
conn, retrlen =self.ftp.ntransfercmd(cmd)
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/ftplib.py", line 354, in ntransfercmd
conn = socket.create_connection((host, port), self.timeout,
source_address=self.source_address)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 879, in create_connectionraise exceptions[0]
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 864, in create_connection
sock.connect(sa)
~~~~~~~~~~~~^^^^TimeoutError: [Errno 60] Operation timed out
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58806), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58808), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1546, in ftp_open
fp, retrlen = fw.retrfile(file, type)
~~~~~~~~~~~^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1826, in retrfile
conn, retrlen =self.ftp.ntransfercmd(cmd)
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/ftplib.py", line 354, in ntransfercmd
conn = socket.create_connection((host, port), self.timeout,
source_address=self.source_address)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 879, in create_connectionraise exceptions[0]
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 864, in create_connection
sock.connect(sa)
~~~~~~~~~~~~^^^^TimeoutError: [Errno 60] Operation timed out
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58796), raddr=('68.183.26.59', 21)>
skipped "Resource 'ftp://www.pythontest.net/' is not available"
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=11, family=2, type=1, proto=6, laddr=('192.168.0.101', 58816), raddr=('68.183.26.59', 21)>
skipped "Resource 'ftp://www.pythontest.net/' is not available"
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58814), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=11, family=2, type=1, proto=6, laddr=('192.168.0.101', 58816), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1546, in ftp_open
fp, retrlen = fw.retrfile(file, type)
~~~~~~~~~~~^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1826, in retrfile
conn, retrlen =self.ftp.ntransfercmd(cmd)
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/ftplib.py", line 354, in ntransfercmd
conn = socket.create_connection((host, port), self.timeout,
source_address=self.source_address)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 879, in create_connectionraise exceptions[0]
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 864, in create_connection
sock.connect(sa)
~~~~~~~~~~~~^^^^TimeoutError: [Errno 60] Operation timed out
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=11, family=2, type=1, proto=6, laddr=('192.168.0.101', 58864), raddr=('68.183.26.59', 21)>
skipped "Resource 'ftp://www.pythontest.net/' is not available"
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=7, family=2, type=1, proto=6, laddr=('192.168.0.101', 58842), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58845), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1546, in ftp_open
fp, retrlen = fw.retrfile(file, type)
~~~~~~~~~~~^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1826, in retrfile
conn, retrlen =self.ftp.ntransfercmd(cmd)
~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/ftplib.py", line 354, in ntransfercmd
conn = socket.create_connection((host, port), self.timeout,
source_address=self.source_address)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 879, in create_connectionraise exceptions[0]
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 864, in create_connection
sock.connect(sa)
~~~~~~~~~~~~^^^^TimeoutError: [Errno 60] Operation timed out
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58808), raddr=('68.183.26.59', 21)>
skipped "Resource 'ftp://www.pythontest.net/' is not available"
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=9, family=2, type=1, proto=6, laddr=('192.168.0.101', 58851), raddr=('68.183.26.59', 21)>
skipped "Resource 'ftp://www.pythontest.net/' is not available"
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=8, family=2, type=1, proto=6, laddr=('192.168.0.101', 58845), raddr=('68.183.26.59', 21)>
skipped "Resource 'ftp://www.pythontest.net/' is not available"
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 22, in _retry_thrice
last_exc = e
^^^^^^^^ResourceWarning: unclosed <socket.socket fd=10, family=2, type=1, proto=6, laddr=('192.168.0.101', 58858), raddr=('68.183.26.59', 21)>
skipped "Resource 'ftp://www.pythontest.net/' is not available"
Traceback (most recent call last):
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 20, in _retry_thricereturn func(*args, **kwargs)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 187, in urlopenreturn opener.open(url, data, timeout)
~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 487, in open
response =self._open(req, data)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 504, in _open
result =self._call_chain(self.handle_open, protocol, protocol +'_open', req)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 464, in _call_chain
result = func(*args)
File "/Users/buildbot/buildarea/3.x.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1556, in ftp_openraise URLError(f"ftp error: {exp}") from exp
urllib.error.URLError: <urlopen error ftp error: [Errno 60] Operation timed out>

… `preserve_none` and `musttail` do not exist. (pythonGH-140548) Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com> (cherry picked from commit 2f60b8f)

bedevere-app · 2025-11-02T20:03:43Z

GH-140923 is a backport of this pull request to the 3.14 branch.

…preserve_none and musttail do not exist (GH-140548) (#140923) gh-140513: Fail to compile if `_Py_TAIL_CALL_INTERP` is set but `preserve_none` and `musttail` do not exist. (GH-140548) (cherry picked from commit 2f60b8f) Co-authored-by: Krishna Chaitanya <141550576+XChaitanyaX@users.noreply.github.com>

… `preserve_none` and `musttail` do not exist. (pythonGH-140548) Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>

…ds on Windows (#148036) Rather than failing late when compiling e.g. a debug configuration ``` build.bat -c debug --tail-call-interp ``` with hundreds of ``` error C4737: Unable to perform required tail call. Performance may be degraded. ``` -- fail early with an explicit error message for configurations that are not supported by MSVC. This is a follow-up on #140513 / #140548

…C builds on Windows (python#148036) Rather than failing late when compiling e.g. a debug configuration ``` build.bat -c debug --tail-call-interp ``` with hundreds of ``` error C4737: Unable to perform required tail call. Performance may be degraded. ``` -- fail early with an explicit error message for configurations that are not supported by MSVC. This is a follow-up on python#140513 / python#140548

XChaitanyaX added 2 commits October 24, 2025 19:22

fix
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add space after #endif
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XChaitanyaX requested a review from markshannon as a code owner October 24, 2025 13:57

bedevere-appBot mentioned this pull request Oct 24, 2025
We should fail to compile if _Py_TAIL_CALL_INTERP is set but preserve_none and musttail do not exist. #140513
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XChaitanyaX added 2 commits October 24, 2025 22:38

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fix indent
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Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>

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Fidget-Spinner changed the title ~~gh-140513: We should fail to compile if _Py_TAIL_CALL_INTERP is set but preserve_none and musttail do not exist.~~gh-140513: Fail to compile if _Py_TAIL_CALL_INTERP is set but preserve_none and musttail do not exist.Nov 1, 2025

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Fidget-Spinner merged commit 2f60b8f into python:mainNov 1, 2025
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XChaitanyaX deleted the pr_140513 branch November 3, 2025 02:23

This was referenced Apr 3, 2026
GH-148047: Check early whether tail-calling is possible for MSVC builds on Windows #148036
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Check early whether tail-calling is possible for MSVC builds on Windows #148047
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gh-140513: Fail to compile if `_Py_TAIL_CALL_INTERP` is set but `preserve_none` and `musttail` do not exist. - #140548

gh-140513: Fail to compile if `_Py_TAIL_CALL_INTERP` is set but `preserve_none` and `musttail` do not exist.#140548
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