gh-140104: Set next_instr properly in the JIT during exceptions #140233

Fidget-Spinner · 2025-10-16T20:47:55Z

Issue: JIT (correctness): Different UnboundLocalError for same code with JIT on or off #140104

Co-Authored-By: devdanzin <74280297+devdanzin@users.noreply.github.com>

devdanzin · 2025-10-16T23:59:54Z

This PR fixes all correctness bugs found by the fuzzer so far, thank you!

chris-eibl · 2025-10-18T14:59:52Z

Tailcall CI is broken for x86_64-pc-windows-msvc and aarch64-pc-windows-msvc.

Updating opcode_metadata_generator.py and regenerating pycore_opcode_metadata.h fixes the x86_64 build and passes the tests for me:

diff --git a/Tools/cases_generator/opcode_metadata_generator.py b/Tools/cases_generator/opcode_metadata_generator.py
index b649b381233..e3ac335ed48 100644
--- a/Tools/cases_generator/opcode_metadata_generator.py
+++ b/Tools/cases_generator/opcode_metadata_generator.py
@@ -147,7 +147,7 @@ def generate_instruction_formats(analysis: Analysis, out: CWriter) -> None:
 
 
 def generate_deopt_table(analysis: Analysis, out: CWriter) -> None:
-    out.emit("extern const uint8_t _PyOpcode_Deopt[256];\n")
+    out.emit("PyAPI_DATA(const uint8_t) _PyOpcode_Deopt[256];\n")
     out.emit("#ifdef NEED_OPCODE_METADATA\n")
     out.emit("const uint8_t _PyOpcode_Deopt[256] = {\n")
     deopts: list[tuple[str, str]] = []
@@ -170,7 +170,7 @@ def generate_deopt_table(analysis: Analysis, out: CWriter) -> None:
 
 
 def generate_cache_table(analysis: Analysis, out: CWriter) -> None:
-    out.emit("extern const uint8_t _PyOpcode_Caches[256];\n")
+    out.emit("PyAPI_DATA(const uint8_t) _PyOpcode_Caches[256];\n")
     out.emit("#ifdef NEED_OPCODE_METADATA\n")
     out.emit("const uint8_t _PyOpcode_Caches[256] = {\n")
     for inst in analysis.instructions.values():

Unfortunately, I cannot test aarch64. Hopefully, this fixes it as well.

Would have liked to fail it during compiling like x86_64, not at runtime, though?

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

markshannon · 2025-10-21T12:12:43Z

frame->instr_ptr is set correctly in _ERROR_POP_N. I think the bug is in TIER1_TO_TIER2 which needs to set next_instr = frame->instr_ptr + 1; in the error case.

markshannon · 2025-10-21T15:01:35Z

Python/ceval_macros.h

-        next_instr = frame->instr_ptr;                 \
+        /* gh-140104: The exception handler expects frame->instr_ptr
+            to be pointing to next_instr, not this_instr! */ \
+        next_instr = frame->instr_ptr + 1 + _PyOpcode_Caches[_PyOpcode_Deopt[frame->instr_ptr->op.code]];                 \


Suggested change

next_instr = frame->instr_ptr + 1 + _PyOpcode_Caches[_PyOpcode_Deopt[frame->instr_ptr->op.code]]; \

next_instr = frame->instr_ptr + 1;

Just +1 to compensate for the the -1 in label(exception_unwind)

Pointing to the next instruction does work, but it is unnecessary. As long as next_inst -1 points into the current instruction, unwinding works correctly.

bedevere-app · 2025-10-21T16:12:34Z

When you're done making the requested changes, leave the comment: I have made the requested changes; please review again.

markshannon · 2025-10-24T08:42:25Z

Lib/test/test_capi/test_opt.py

+        def f():
+            for i in range(TIER2_THRESHOLD + 3):
+                try:
+                    g(i)


Suggested change

g(i)

undefined_variable(i)

I'm assuming that the exception here is that g is undefined?

Can we have two tests?

where the exception is raised on the first instruction of the block (like this one), and

where it is raised on the last instruction.
Something like:

a_list[""] = 0

I don't quite understand how to raise something on the last instruction. What does a_list contain?

a_list contains a list.

a_list[""] = 0
compiles to

LOAD_SMALL_INT 0 LOAD_FAST_BORROW 0 (a_list) LOAD_CONST 1 ('') STORE_SUBSCR

The STORE_SUBSCR will raise an exception.

I have to admit I straight up forgot how to code Python and thought that was valid Python code that wouldn't raise an exception.

markshannon · 2025-10-24T08:46:12Z

The code looks good now.
Can we add a test to check that raising an exception works for the last instruction in a block, as well as for the first?

markshannon

Thanks

miss-islington-app · 2025-10-27T19:10:56Z

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

miss-islington-app · 2025-10-27T19:10:59Z

Sorry, @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 a7160912274003672dc116d918260c0a81551c21 3.14

bedevere-app · 2025-10-27T19:52:02Z

GH-140687 is a backport of this pull request to the 3.14 branch.

…pythonGH-140233) Co-authored-by: devdanzin <74280297+devdanzin@users.noreply.github.com> Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>

GH-140233) (GH-140687) Co-authored-by: Ken Jin <kenjin@python.org> Co-authored-by: devdanzin <74280297+devdanzin@users.noreply.github.com> Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>

bedevere-bot · 2025-10-28T00:30:28Z

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot ARM64 macOS 3.14 (tier-2) has failed when building commit 2e21672.

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/1772/builds/639) and take a look at the build logs.
Check if the failure is related to this commit (2e21672) 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/1772/builds/639

Failed tests:

test_urllib2net

Failed subtests:

test_ftp_default_timeout - test.test_urllib2net.TimeoutTest.test_ftp_default_timeout
test_ftp_no_timeout - test.test_urllib2net.TimeoutTest.test_ftp_no_timeout
test_ftp_basic - test.test_urllib2net.TimeoutTest.test_ftp_basic
test_ftp - test.test_urllib2net.OtherNetworkTests.test_ftp
test_ftp_timeout - test.test_urllib2net.TimeoutTest.test_ftp_timeout

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

==

Click to see traceback logs

Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 342, in test_ftp_basic
    u = _urlopen_with_retry(self.FTP_HOST)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 28, in wrapped
    return _retry_thrice(func, exc, *args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 24, in _retry_thrice
    raise last_exc
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 20, in _retry_thrice
    return func(*args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 187, in urlopen
    return opener.open(url, data, timeout)
           ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 487, in open
    response = self._open(req, data)
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 464, in _call_chain
    result = func(*args)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1556, in ftp_open
    raise URLError(f"ftp error: {exp}") from exp
urllib.error.URLError: <urlopen error ftp error: [Errno 60] Operation timed out>


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64638), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=7, family=2, type=1, proto=6, laddr=('192.168.0.101', 64645), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64645), 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', 64651), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64651), 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', 64658), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64658), raddr=('68.183.26.59', 21)>


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64641), 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', 64643), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64643), raddr=('68.183.26.59', 21)>
ERROR


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64678), 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', 64680), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64680), raddr=('68.183.26.59', 21)>
ERROR


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64685), 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', 64687), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64687), raddr=('68.183.26.59', 21)>
ERROR


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64634), raddr=('68.183.26.59', 21)>
Warning -- Unraisable exception
Exception ignored while finalizing socket <socket.socket fd=7, family=2, type=1, proto=6, laddr=('192.168.0.101', 64636), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64636), raddr=('68.183.26.59', 21)>
ERROR


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1806, in retrfile
    conn, retrlen = self.ftp.ntransfercmd(cmd)
                    ~~~~~~~~~~~~~~~~~~~~~^^^^^
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 870, in create_connection
    raise exceptions[0]
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 855, in create_connection
    sock.connect(sa)
    ~~~~~~~~~~~~^^^^
TimeoutError: [Errno 60] Operation timed out


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 260, in _test_urls
    f = urlopen(url, req, support.INTERNET_TIMEOUT)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 28, in wrapped
    return _retry_thrice(func, exc, *args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 24, in _retry_thrice
    raise last_exc
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 20, in _retry_thrice
    return func(*args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 487, in open
    response = self._open(req, data)
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 464, in _call_chain
    result = func(*args)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1556, in ftp_open
    raise URLError(f"ftp error: {exp}") from exp
urllib.error.URLError: <urlopen error ftp error: timed out>


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 363, in test_ftp_no_timeout
    u = _urlopen_with_retry(self.FTP_HOST, timeout=None)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 28, in wrapped
    return _retry_thrice(func, exc, *args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 24, in _retry_thrice
    raise last_exc
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 20, in _retry_thrice
    return func(*args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 187, in urlopen
    return opener.open(url, data, timeout)
           ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 487, in open
    response = self._open(req, data)
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 464, in _call_chain
    result = func(*args)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1556, in ftp_open
    raise URLError(f"ftp error: {exp}") from exp
urllib.error.URLError: <urlopen error ftp error: [Errno 60] Operation timed out>


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64653), 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', 64656), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64656), raddr=('68.183.26.59', 21)>
ERROR


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 372, in test_ftp_timeout
    u = _urlopen_with_retry(self.FTP_HOST, timeout=60)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 28, in wrapped
    return _retry_thrice(func, exc, *args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 24, in _retry_thrice
    raise last_exc
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 20, in _retry_thrice
    return func(*args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 187, in urlopen
    return opener.open(url, data, timeout)
           ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 487, in open
    response = self._open(req, data)
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 464, in _call_chain
    result = func(*args)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1556, in ftp_open
    raise URLError(f"ftp error: {exp}") from exp
urllib.error.URLError: <urlopen error ftp error: [Errno 60] Operation timed out>


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64698), 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', 64700), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64700), raddr=('68.183.26.59', 21)>
ERROR


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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/3.14.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/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 870, in create_connection
    raise exceptions[0]
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 855, in create_connection
    sock.connect(sa)
    ~~~~~~~~~~~~^^^^
TimeoutError: [Errno 60] Operation timed out


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64691), 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', 64693), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64693), raddr=('68.183.26.59', 21)>
ERROR


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64647), 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', 64649), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64649), raddr=('68.183.26.59', 21)>
ERROR


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64682), 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', 64689), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64689), 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', 64695), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64695), 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', 64702), raddr=('68.183.26.59', 21)>:
Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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', 64702), raddr=('68.183.26.59', 21)>


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 351, in test_ftp_default_timeout
    u = _urlopen_with_retry(self.FTP_HOST)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 28, in wrapped
    return _retry_thrice(func, exc, *args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 24, in _retry_thrice
    raise last_exc
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 20, in _retry_thrice
    return func(*args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 187, in urlopen
    return opener.open(url, data, timeout)
           ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 487, in open
    response = self._open(req, data)
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 464, in _call_chain
    result = func(*args)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1556, in ftp_open
    raise URLError(f"ftp error: {exp}") from exp
urllib.error.URLError: <urlopen error ftp error: [Errno 60] Operation timed out>


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1806, in retrfile
    conn, retrlen = self.ftp.ntransfercmd(cmd)
                    ~~~~~~~~~~~~~~~~~~~~~^^^^^
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 870, in create_connection
    raise exceptions[0]
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/socket.py", line 855, in create_connection
    sock.connect(sa)
    ~~~~~~~~~~~~^^^^
TimeoutError: timed out


Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 260, in _test_urls
    f = urlopen(url, req, support.INTERNET_TIMEOUT)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 28, in wrapped
    return _retry_thrice(func, exc, *args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 24, in _retry_thrice
    raise last_exc
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/test/test_urllib2net.py", line 20, in _retry_thrice
    return func(*args, **kwargs)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 487, in open
    response = self._open(req, data)
  File "/Users/buildbot/buildarea/3.14.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/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 464, in _call_chain
    result = func(*args)
  File "/Users/buildbot/buildarea/3.14.pablogsal-macos-m1.macos-with-brew/build/Lib/urllib/request.py", line 1556, in ftp_open
    raise URLError(f"ftp error: {exp}") from exp
urllib.error.URLError: <urlopen error ftp error: [Errno 60] Operation timed out>

Fidget-Spinner and others added 2 commits October 16, 2025 21:43

Fix wrong instruction pointer for exceptions

a4293bc

Create 2025-10-16-21-47-00.gh-issue-140104.A8SQIm.rst

55967c9

Co-Authored-By: devdanzin <74280297+devdanzin@users.noreply.github.com>

Fidget-Spinner requested a review from markshannon as a code owner October 16, 2025 20:47

bedevere-app bot added the awaiting core review label Oct 16, 2025

bedevere-app bot mentioned this pull request Oct 16, 2025

JIT (correctness): Different UnboundLocalError for same code with JIT on or off #140104

Closed

Fidget-Spinner requested review from brandtbucher and tomasr8 October 16, 2025 20:49

Move files

008979a

Fix externs

d9eb7a9

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

Apply suggestions

4f45776

markshannon requested changes Oct 21, 2025

View reviewed changes

bedevere-app bot added awaiting changes and removed awaiting core review labels Oct 21, 2025

Apply suggestions

ccc3d64

markshannon self-requested a review October 24, 2025 08:12

markshannon reviewed Oct 24, 2025

View reviewed changes

Fidget-Spinner added 2 commits October 24, 2025 22:21

Address review partially

1e6b2e4

Address review; add test

ab4a8c9

Fidget-Spinner requested a review from markshannon October 27, 2025 16:34

markshannon approved these changes Oct 27, 2025

View reviewed changes

bedevere-app bot added awaiting merge and removed awaiting changes labels Oct 27, 2025

Fidget-Spinner merged commit a716091 into python:main Oct 27, 2025
54 of 55 checks passed

bedevere-app bot removed the awaiting merge label Oct 27, 2025

Fidget-Spinner deleted the this_instr_exception branch October 27, 2025 18:26

Fidget-Spinner added the needs backport to 3.14 bugs and security fixes label Oct 27, 2025

miss-islington-app bot assigned Fidget-Spinner Oct 27, 2025

bedevere-app bot removed the needs backport to 3.14 bugs and security fixes label Oct 27, 2025

	next_instr = frame->instr_ptr + 1 + _PyOpcode_Caches[_PyOpcode_Deopt[frame->instr_ptr->op.code]]; \
	next_instr = frame->instr_ptr + 1;

Uh oh!

Uh oh!

gh-140104: Set next_instr properly in the JIT during exceptions #140233

gh-140104: Set next_instr properly in the JIT during exceptions #140233

Uh oh!

Conversation

Fidget-Spinner commented Oct 16, 2025 • edited by bedevere-app bot Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

devdanzin commented Oct 16, 2025

Uh oh!

chris-eibl commented Oct 18, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

markshannon commented Oct 21, 2025

Uh oh!

markshannon Oct 21, 2025

Choose a reason for hiding this comment

Uh oh!

bedevere-app bot commented Oct 21, 2025

Uh oh!

markshannon Oct 24, 2025

Choose a reason for hiding this comment

Uh oh!

Fidget-Spinner Oct 24, 2025

Choose a reason for hiding this comment

Uh oh!

markshannon Oct 27, 2025

Choose a reason for hiding this comment

Uh oh!

Fidget-Spinner Oct 27, 2025

Choose a reason for hiding this comment

Uh oh!

markshannon commented Oct 24, 2025

Uh oh!

markshannon left a comment

Choose a reason for hiding this comment

Uh oh!

Uh oh!

miss-islington-app bot commented Oct 27, 2025

Uh oh!

miss-islington-app bot commented Oct 27, 2025

Uh oh!

bedevere-app bot commented Oct 27, 2025

Uh oh!

bedevere-bot commented Oct 28, 2025

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

5 participants

Fidget-Spinner commented Oct 16, 2025 •

edited by bedevere-app bot

Loading

chris-eibl commented Oct 18, 2025 •

edited

Loading