[3.15] gh-151278: Fix test_faulthandler on UBSan (GH-151279) (#151281)
gh-151278: Fix test_faulthandler on UBSan (GH-151279)
* Py_FatalError() no longer calls _PyFaulthandler_Fini() if it
doesn't hold the GIL.
* Skip test_faulthandler tests raising signals if run with UBSan.
* Enable test_faulthandler in GitHub Action "Reusable Sanitizer".
(cherry picked from commit e60c42dc3f5a8dd9b10bc9a8a028ef2765469650)
Co-authored-by: Victor Stinner <vstinner@python.org>
Victor Stinner [Wed, 10 Jun 2026 20:03:27 +0000 (22:03 +0200)]
[3.15] gh-151253: Dump the Python path configuration on _PyCodec_InitRegistry() failure (#151250) (#151269)
gh-151253: Dump the Python path configuration on _PyCodec_InitRegistry() failure (#151250)
If "import encodings" fails at Python startup, dump the Python path
configuration to help users debugging their configuration. The
encodings module is the first module imported during Python startup.
[3.15] GHA: Display output when a sanitizer test fails (GH-151268) (#151272)
GHA: Display output when a sanitizer test fails (GH-151268)
Modify GitHub Action "Reusable Sanitizer" to display output when a
test fails: pass -W option.
(cherry picked from commit 3a8bebd86f36be05442fa2f3adcc83c2a4b00ef2)
Co-authored-by: Victor Stinner <vstinner@python.org>
gh-143988: Fix re-entrant mutation crashes in socket sendmsg/recvmsg_into (GH-143987)
Fix crashes in socket.sendmsg() and socket.recvmsg_into() that could
occur if buffer sequences are mutated re-entrantly during argument
parsing via __buffer__ protocol callbacks.
The bug occurs because:
1. PySequence_Fast() returns the original list object when the input
is already a list (not a copy).
2. During iteration, PyObject_GetBuffer() triggers __buffer__
callbacks which may clear the list.
3. Subsequent iterations access invalid memory (heap OOB read).
The fix replaces PySequence_Fast() with PySequence_Tuple() which
always creates a new tuple, ensuring the sequence cannot be mutated
during iteration.
(cherry picked from commit 896f7fdc7d0ba6d4ace06935b9d67c4da0f9ecbe)
[3.15] gh-89554: Document socket.SocketType as a class (GH-150683) (#151244)
gh-89554: Document socket.SocketType as a class (GH-150683)
socket.SocketType is a class (re-exported from _socket as an alias of
_socket.socket, the base class of socket.socket), but was documented with
the ".. data::" directive, so ":class:" cross-references to it cannot
resolve against a py:class target.
Switch the entry to ".. class::", correct the misleading description
(SocketType is the base class of the socket type, not "type(socket(...))"
which is socket.socket; addresses gh-88427), move it into the Socket
Objects section, and document the socket object methods and attributes
nested under the socket class, dropping the redundant "socket." prefix.
(cherry picked from commit a621e8ad811e7d51d69b0969a2bd07888a02db1e)
Co-authored-by: Bernát Gábor <gaborjbernat@gmail.com>
[3.15] gh-150988: Fix refleak in `OSError` when attrs are set before `super().__init__()` (GH-150990) (#151240)
gh-150988: Fix refleak in `OSError` when attrs are set before `super().__init__()` (GH-150990)
(cherry picked from commit f2a0f82282d6307f7fd2d4ccf52a8fd95ac3922f)
Co-authored-by: Lukas Geiger <lukas.geiger94@gmail.com> Co-authored-by: Victor Stinner <vstinner@python.org>
[3.15] gh-150700: Fix class-scope inline comprehensions when nested scopes reference `__class__` and friends (GH-150735) (#151211)
gh-150700: Fix class-scope inline comprehensions when nested scopes reference `__class__` and friends (GH-150735)
* Fix class-scope inline comprehensions when nested scopes reference `__class__` and friends
In `inline_comprehension()`, when `__class__` / `__classdict__` /
`__conditional_annotations__` appears as `FREE` in a comprehension's
symbol table because a nested scope captured it (e.g. nested lambdas),
this name is still discarded from `comp_free` unconditionally.
This prevents `drop_class_free()` from seeing it, so the appropriate
`ste_needs_(...)` flag is never set on the enclosing class.
That leads to `codegen_make_closure()` throwing `SystemError` when it
couldn't find `__class__` / `__classdict__` /
`__conditional_annotations__` in the class's cellvars.
From now on we just discard from `comp_free` when no child scope
(e.g. a lambda) still needs the name as `FREE`. When a child scope does
need it, keep it in `comp_free` so `drop_class_free()` can set the
appropriate flag and the class creates the implicit cell.
* Fix tests
* Fix typo
* Fix formatting
* Add test checking validity of `__class__` returned
[3.15] gh-53144: Improve charset support in the email package (GH-149942) (GH-150967)
Defer to the codecs module for all aliases.
Use MIME/IANA names for all IANA registered charsets.
Fix email.contentmanager.set_text_content().
(cherry picked from commit c195a046f81d986dce22743d85e2500fe282e8a9)
[3.15] gh-129011: Update docs for Raw I/O read, readinto, and write (GH-135328) (#150957)
gh-129011: Update docs for Raw I/O read, readinto, and write (GH-135328)
Update `RawIOBase` and `FileIO` documentation to match implementation
behavior around `.read`, `.readinto`, `.readall` and `.write`.
In particular:
- They may make more than one system call (PEP-475)
- Add warnings if `.write()` requires a wrapping retry loop (see: gh-126606)
- "Raw I/O" `.write`` may not write all bytes
- `buffering=0` example results in a "Raw I/O"
(cherry picked from commit e4db68b9c990ed1bb7562094bee2e73f4450d42b)
ass_subscript_slice() returned early when the computed slice length
was zero, bypassing validation performed for non-empty slices.
(cherry picked from commit fc9c4db1302f8be7527e70cf0938b629985a1d72)
[3.15] Correct Stable ABI documentation for METH_FASTCALL (GH-149593) (GH-150853)
The current documentation says:
>
> METH_FASTCALL
> Part of the Stable ABI since version 3.7.
>
> [...]
>
> Added in version 3.7.
>
> Changed in version 3.10: METH_FASTCALL is now part of the stable ABI.
so is contradictory about when it was added to the Stable ABI. Looking at the header it seems like 3.10 is right.
(cherry picked from commit 58beae7319c58d850184d621d6635de23f71a229)
[3.15] gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED (GH-150704) (#150713)
gh-150436: Skip subprocess test on STATUS_DLL_INIT_FAILED (GH-150704)
If a subprocess spawned with CREATE_NEW_CONSOLE creation flag fails
with STATUS_DLL_INIT_FAILED return code, skip the test. It's likely a
memory allocation failure in the desktop heap memory which caused the
DLL init failure.
(cherry picked from commit e8034dd841808416e243a4b2f8e08f0edf9caff3)
Co-authored-by: Victor Stinner <vstinner@python.org>
[3.15] gh-146636: Add Free-threaded Stable ABI migration guide (GH-150580) (#150844)
Co-authored-by: Petr Viktorin <encukou@gmail.com> Co-authored-by: Charlie Lin <tuug@gmx.us> Co-authored-by: da-woods <dw-git@d-woods.co.uk> Co-authored-by: Stan Ulbrych <stan@python.org> Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
[3.15] gh-91099: fix[imaplib]: call Exception with string instance (GH-31823) (#150811)
* bpo-46943: fix[imaplib]: call Exception with string instance
Adjust the behavior of 'login' to be similar to `authenticate()`,
where self.error is called with a str() instance.
(cherry picked from commit 29805f00a1b65163230d17584c30e2b955086abb)
Co-authored-by: Florian Best <spaceone@users.noreply.github.com> Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
[3.15] gh-150723: Fix perf jitdump files on macOS (GH-150728) (#150832)
gh-150723: Fix perf jitdump files on macOS (GH-150728)
The perf jitdump format defines the thread id field of the JR_CODE_LOAD
record as a 32-bit value, but on macOS it was declared as a uint64_t
(since pthread_threadid_np() returns a uint64_t). Those extra 8 bytes
plus alignment padding shifted every following field, so parsers reading
the file by the spec misread code_size as the code address and failed to
resolve any Python frames.
Declare thread_id as uint32_t on all platforms and truncate the macOS
thread id when writing the record. The value is only informational.
Symbols are resolved by address, and not thread ids so truncation is
safe here.
* Use mach_absolute_time for macOS jitdump timestamps
On macOS the jitdump file is consumed by profilers such as samply, which
timestamp their samples using mach_absolute_time(). The jitdump events were
stamped with clock_gettime(CLOCK_MONOTONIC), a different clock domain that
keeps advancing while the system is asleep, so the JIT code mappings could be
off by days relative to the samples and no Python frame would resolve. Stamp
jitdump events with mach_absolute_time() on macOS so they share the sampler's
clock domain. Linux continues to use CLOCK_MONOTONIC to stay aligned with perf.
Exercise the -Xperf_jit (jitdump) backend through samply and assert that
Python frames resolve, exercising the binary jitdump path end to end.
Skipped when samply is not installed.
(cherry picked from commit 494f2e3c92cc1b7774cca16fca5c7d1ff18c0de2)
Co-authored-by: Nazım Can Altınova <canaltinova@gmail.com>
The following classes are documented publicly as functions, and are
therefore updated internally (`__class_getitem__.__doc__`) but not in the
public docs:
- functools.partial
- itertools.chain
The following builtin types have updates to `__class_getitem__.__doc__`
but not to any documentation pages:
- union objects are now documented as "supporting class-level []",
rather than anything to do with generics.
- Templates might be generic over a single type (union, in theory) or
over a TypeVarTuple. As this is not currently fully settled, it is
marked with a comment and a mild hint that it is a single type is used
(namely, "type" is singular rather than "types", plural)
* Apply suggestions from code review
* Correct several class getitem docs
And expand the text for tuples.
* Add notes on generic typing of builtins
* Fix typo in tuple.__class_getitem__ docstring
* Typo fix: malformed refs
Fix `generic` links which weren't marked as `:ref:`.
* Strike unnecessary docs on generic-ness
* Apply suggestions from code review
These are applied at both the originally indicated locations and in the
corresponding docstring definitions.
* Update Doc/library/re.rst
* Update Objects/enumobject.c
* Remove tuple generic doc in 'stdtypes' page
This is covered in more detail in the cross-linked typing documentation.
The other copy of this documentation -- in the docstring for
`tuple.__class_getitem__` -- is left in place.
* Fix whitespace around new doc of generics
Per review, do not introduce or remove whitespace such that section
breaks are altered by the introduction of doc on various generic types.
In most cases, this is a removal of an extra line.
In one case (Arrays), it is the reintroduction of a line.
Additionally, two other minor fixes are included:
- incorrect indent on 'defaultdicts'
- make `mappingproxy.__class_getitem__.__doc__` consistent with other
mapping type generic docs
* Move placement of memoryview generic note
Previous placement was at the end of the main docstring, which is
consistent with other types but places it after a section on various
methods (which makes it read somewhat inconsistently). Moving it up
helps resolve.
* Ensure sphinxdoc does not start sentences lowercase
Lowercase class names at the start of sentences are marked out with the
`class` role. In the case of `deque`, documentation already refers to
these as `Deques`, so this form is preferred.
* Apply suggestions from code review
* Fix line endings and wrap more tightly
Line endings fixed by pre-commit ; also re-wrapped the MappingProxyType
text which was too long.
BufferedRandom does not inherit from BufferedReader and BufferedWriter
in the C implementation.
(cherry picked from commit 551bc2cb5ed4719c35ca3ea0f320167dd750389e)
[3.15] gh-89554: Document _thread.LockType as a class (GH-150684) (#150785)
gh-89554: Document _thread.LockType as a class (GH-150684)
_thread.LockType is a class (the type of lock objects), but was documented
with the ".. data::" directive, so ":class:" cross-references to it cannot
resolve against a py:class target.
Switch the entry to ".. class::", move it next to the lock methods, and
document acquire(), release() and locked() as methods of the class. Keep
the old _thread.lock.* URL fragments working with raw HTML anchors.
(cherry picked from commit e37ce569773b5e4e5c0e6042d4adfde2e9608f13)
Co-authored-by: Bernát Gábor <gaborjbernat@gmail.com>
projects / thirdparty / Python / cpython.git / log
