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Merged
pull merged 11 commits into from
Jan 9, 2026
Merged

[pull] main from python:main #647

pull merged 11 commits into from
Jan 9, 2026

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@pull pull bot commented Jan 9, 2026 •
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📚 Documentation preview 📚: https://cpython-previews--647.org.readthedocs.build/

superboy-zjc and others added 11 commits January 9, 2026 13:50
@superboy-zjc
gh-143378: Fix use-after-free when BytesIO is concurrently mutated du…
6d54b6a 
…ring write operations (GH-143408)

PyObject_GetBuffer() can execute user code (e.g. via __buffer__), which may
close or otherwise mutate a BytesIO object while write() or writelines()
is in progress. This could invalidate the internal buffer and lead to a
use-after-free.

Ensure that PyObject_GetBuffer() is called before validation checks.
@vstinner
gh-143547: Fix PyErr_FormatUnraisable() fallback (#143557)
39a2bcf 
Hold a strong reference to 'hook' while calling the default
unraisable took to log hook failure.

Fix test_sys.UnraisableHookTest: use the right decorator function to
disable colors. Previously, tests were always skipped.
@aisk
gh-72239: Add note distinguishing concurrent.futures.Future from asyn…
a9ca49d 
…cio.Future (#143288)
@Abdoulrasheed
gh-142829: Fix use-after-free in Context.__eq__ via re-entrant `Con…
a4086d7 
…textVar.set` (#142905)
@vstinner
gh-143191: Use _PyOS_MIN_STACK_SIZE in _thread.stack_size() (#143601)
ba10100 
The stack size must be at least _PyOS_MIN_STACK_SIZE+SYSTEM_PAGE_SIZE
bytes.
@adorilson
gh-106318: Improve str.removeprefix() and str.removesuffix() docs (#…
6d6c7ed 
…143580)

Add doctest role and 'See also'.
@adorilson
gh-106318: Add examples for str.rfind() method (#143582)
c696f33
@Thyre
gh-143460: Skip infinite recusion tests for infinite stack size (#143606
61e0366 
)

Avoid tests being killed due to OOM on Linux if a system is configured with
'ulimit -s unlimited' by skipping tests relying on infinite recursion.

While unclear if Python should support 'ulimit -s unlimited', we should at
least try to avoid failing a PGO build running tests due to an unlimited
stack size being set.

Signed-off-by: Jan André Reuter <j.reuter@fz-juelich.de>
@Fidget-Spinner
gh-143421: Lazily allocate tracer code and opt buffers (GH-143597)
b852236
@serhiy-storchaka
gh-143006: Fix and optimize mixed comparison of float and int (GH-143084
66bca38 
)

When comparing negative non-integer float and int with the same number
of bits in the integer part, __neg__() in the int subclass returning
not an int caused an assertion error.

Now the integer is no longer negated. Also, reduced the number of
temporary created Python objects.
@donbarbos
gh-136438: Make sure test_interpreters pass with all optimization l…
499d3a8 
…evels (GH-136499)
@pull pull bot locked and limited conversation to collaborators Jan 9, 2026
@pull pull bot added the ⤵️ pull label Jan 9, 2026
@pull pull bot merged commit 499d3a8 into tj-python:main Jan 9, 2026
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9 participants

@superboy-zjc @vstinner @aisk @Abdoulrasheed @adorilson @Thyre @Fidget-Spinner @serhiy-storchaka @donbarbos