gh-140530: fix a reference leak in an error path for `raise exc from cause` (#140908)
Fix a reference leak in `raise E from T` when `T` is an exception
subtype for which `T.__new__` does not return an exception instance.
(cherry picked from commit 0c77e7c23b)
Previously, socket.if_nametoindex() and socket.if_indextoname() could raise
an `OSError` with a `None` errno. Now, the errno from libc is propagated.
(cherry picked from commit 3ce2d57b2f)
gh-140734: fix off-by-one error when comparing to `_SUN_PATH_MAX` (GH-140903)
The limit includes a NULL terminator.
(cherry picked from commit 9a19900673)
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
gh-140815: Fix faulthandler for invalid/freed frame (#140921)
faulthandler now detects if a frame or a code object is invalid or
freed.
Add helper functions:
* _PyCode_SafeAddr2Line()
* _PyFrame_SafeGetCode()
* _PyFrame_SafeGetLasti()
_PyMem_IsPtrFreed() now detects pointers in [-0xff, 0xff] range
as freed.
(cherry picked from commit a84181c31b)
[3.13] gh-135307: Fix email error when policy max_line_length is set to 0 or None (GH-135367)
(cherry picked from commit 6d45cd8dbb)
Co-authored-by: Jiucheng(Oliver) <git.jiucheng@gmail.com>
RDM: Like the change made in a earlier PR to the folder, we can/must use 'maxlen' as a stand in for 'unlimited' when computing line lengths when max_line_length is 0 or None; otherwise the computation results in a traceback.
* gh-90949: add Expat API to prevent XML deadly allocations (CVE-2025-59375) (#139234)
Expose the XML Expat 2.7.2 mitigation APIs to disallow use of
disproportional amounts of dynamic memory from within an Expat
parser (see CVE-2025-59375 for instance).
The exposed APIs are available on Expat parsers, that is,
parsers created by `xml.parsers.expat.ParserCreate()`, as:
- `parser.SetAllocTrackerActivationThreshold(threshold)`, and
- `parser.SetAllocTrackerMaximumAmplification(max_factor)`.
(cherry picked from commit f04bea44c3)
(cherry picked from commit 68a1778b77)
* the "plaintext" element
* the RAWTEXT elements "xmp", "iframe", "noembed" and "noframes"
* optionally RAWTEXT (if scripting=True) element "noscript"
(cherry picked from commit a17c57eee5)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-140082: Forward colorizing from libregrtest to unittest (GH-140083)
libregrtest redirects test output to a file as part of its operation.
When `unittest` checks to see if it should colorize with
`isatty(sys.stdout)` that fails resulting in no colorizing of the
unittest output.
Update `libregrtest` to set `FORCE_COLOR=1` when redirecting test output
so that unittest will do color printing.
(cherry picked from commit 6ff62ac4fb)
Co-authored-by: Cody Maloney <cmaloney@users.noreply.github.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
* [3.13] gh-140607: Validate returned byte count in RawIOBase.read (GH-140611)
While `RawIOBase.readinto` should return a count of bytes between 0 and
the length of the given buffer, it is not required to. Add validation
inside RawIOBase.read() that the returned byte count is valid.
(cherry picked from commit 0f0a362768)
Co-authored-by: Cody Maloney <cmaloney@users.noreply.github.com>
Co-authored-by: Shamil <ashm.tech@proton.me>
Co-authored-by: Victor Stinner <vstinner@python.org>
* fixup: Use older attribute name
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Co-authored-by: Shamil <ashm.tech@proton.me>
Co-authored-by: Victor Stinner <vstinner@python.org>
Py_RETURN_NONE, Py_RETURN_TRUE and Py_RETURN_FALSE have already been
fixed by commit 9258f3da91 (issue gh-134989).
(cherry picked from commit c636477523)
[3.13] gh-140593: Fix a memory leak in function `my_ElementDeclHandler` of `pyexpat` (GH-140602)
Ensure that the memory allocated for the content model
passed to `my_ElementDeclHandler` is freed in all error
paths.
(cherry picked from commit e34a5e3304)
gh-140482: Preserve and restore `stty echo` as a test environment (GH-140519)
(cherry picked from commit b3c713a0af)
gh-140482: Restore `stty echo` as a test environment
Co-authored-by: Barry Warsaw <barry@python.org>
gh-138859: Account for `ParamSpec` defaults that are not lists … (GH-138868)
(cherry picked from commit 379fd020a0)
Co-authored-by: bzoracler <50305397+bzoracler@users.noreply.github.com>
Use sysconfig to determine the full name of libpython, rather than hardcoding
a library name that doesn't have ABI flags.
(cherry picked from commit 7f371ed84b)
Co-authored-by: Malcolm Smith <smith@chaquo.com>
Revert GH-131993.
Fix swallowing some syntax warnings in different modules if they accidentally
have the same message and are emitted from the same line.
Fix duplicated warnings in the "finally" block.
(cherry picked from commit 279db6bede)
* [3.13] gh-102431: Clarify constraints on operands of Decimal logical operations (GH-102836)
Sync C/Python implementation of the decimal: logical_ops for contexts.
(cherry picked from commit 6ecf77dbde)
Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
gh-70765: Remove unnecessary extra backtick from Changelog entry (GH-140071)
(cherry picked from commit f70082b477)
Co-authored-by: Rafael Fontenelle <rffontenelle@users.noreply.github.com>
gh-139905: Provide suggestion in error message if `Generic.__init_subclass__` was not called (GH-139943)
(cherry picked from commit 5776d0d2e0)
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
gh-96491: Deduplicate version in IDLE shell title (GH-139841)
Saving to a file added both the filename and repeated the version.
---------
(cherry picked from commit d4e5802588)
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
Fix trailing space before a wrapped long word if the line length with
a space is exactly "width".
(cherry picked from commit 1c598e0436)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
There were a few thread-safety issues when profiling or tracing all
threads via PyEval_SetProfileAllThreads or PyEval_SetTraceAllThreads:
* The loop over thread states could crash if a thread exits concurrently
(in both the free threading and default build)
* The modification of `c_profilefunc` and `c_tracefunc` wasn't
thread-safe on the free threading build.
(cherry picked from commit a10152f8fd)
