)

…9376)

Test that the trailing pathname separator is preserved.

Multiple trailing pathname separators are only preserved if the pattern
does not contain metacharacters, otherwise only one trailing pathname
separator is preserved. This is rather an implementation detail.

Replace PyErr_WriteUnraisable() with PyErr_FormatUnraisable().

* gh-129646: Update the locale alias mapping

* Add a NEWS file.

This adds a new command line argument, `--parallel-threads` to the
regression test runner to allow it to run individual tests in multiple
threads in parallel in order to find multithreading bugs.

Some tests pass when run with `--parallel-threads`, but there's still
more work before the entire suite passes.

#129672)

* Update the module docstring
* Move ``key_for`` inside the class
* Move ``write_pot_file`` outside the class

* Replace PyImport_ImportModule() + PyObject_GetAttr() with
  PyImport_ImportModuleAttr().
* Replace PyImport_ImportModule() + PyObject_GetAttrString() with
  PyImport_ImportModuleAttrString().

Replace PyErr_WriteUnraisable() with PyErr_FormatUnraisable().

Update tests:

* test_coroutines
* test_exceptions
* test_generators
* test_struct

Remove unused variables.

…ionlist` (GH-127835)

As a first step toward aligning the grammar documentation with Python's actual
grammar, this overrides the ReST `productionlist` directive to:
- use `:` instead of the `::=` symbol
- add syntax highlighting for strings (using a Pygments highlighting class)

All links and link targets should be preserved. (Unfortunately, this reaches
into some Sphinx internals; I don't see a better way to do exactly what
Sphinx does.)

This also adds a new directive, `grammar-snippet`, which formats the snippet
almost exactly like what's in the source, modulo syntax highlighting and
keeping the backtick character to mark links to other rules.
This will allow formatting the snippets as in the grammar file
(file:///home/encukou/dev/cpython/Doc/build/html/reference/grammar.html).

The new directive is applied to two simple rules in toplevel_components.rst

---------

Co-authored-by: Blaise Pabon <[email protected]>
Co-authored-by: William Ferreira <[email protected]>
Co-authored-by: bswck <[email protected]>
Co-authored-by: Adam Turner <[email protected]>

Co-authored-by: Hugo van Kemenade <[email protected]>
Co-authored-by: Sviatoslav Sydorenko (Святослав Сидоренко) <[email protected]>

Add bytearray.resize() which wraps PyByteArray_Resize.

Make negative size passed to resize exception/error rather than crash in optimized builds.

For the free-threaded version of the cyclic GC, restructure the "mark alive" phase to use software prefetch instructions.  This gives a speedup in most cases when the number of objects is large enough.  The prefetching is enabled conditionally based on the number of long-lived objects the GC finds.

Instead, anyone requesting credit should submit a PR with contribution summary.
(Also fix typo in existing name.)

Change splash line

Co-authored-by: Terry Jan Reedy <[email protected]>

…9702)

Co-authored-by: Victor Stinner <[email protected]>

GH-129017)

Update _markupbase.py

…s__` and `__type_params__` in free-threading build (#129016)

For now, this just adds a single test suite to the TSAN CI to be run
with `--parallel-threads`.

Co-authored-by: Garrett Gu <[email protected]>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <[email protected]>

Co-authored-by: Adam Turner <[email protected]>
Co-authored-by: Hugo van Kemenade <[email protected]>

…9399)

fix discard

Co-authored-by: Kumar Aditya <[email protected]>

Fix UBSan failures for `mmap_object`

Use 'ignored' for NOARGS method and 'args' for others

Add cast macros for date and time objects

Fix UBSan failures for `PyDateTime_Delta`, `PyDateTime_Date`, `PyDateTime_TZInfo`, `PyDateTime_TimeZone`, `PyDateTime_Time`, `PyDateTime_DateTime`, `PyDateTime_IsoCalendarDate`

Fix up naming

…-130007)

* Implement C recursion protection with limit pointers

* Remove calls to PyOS_CheckStack

* Add stack protection to parser

* Make tests more robust to low stacks

* Improve error messages for stack overflow

GitHub discovered it was an issue with the underlying hardware
and have migrated all the runners to a different arm sku (dpdsv5).

This reverts commit 80b9e79.

Store the current running task on the thread state, it makes it thread safe for the free-threading build and while improving performance as there is no lock contention, this effectively makes it lock free.
When accessing the current task of the current running loop in current thread, no locking is required and can be acessed without locking.
In the rare case of accessing current task of a loop running in a different thread, the stop the world pauses is used in free-threading builds to stop all other running threads and find the task for the specified loop.

This also makes it easier for external introspection to find the current task, and now it will be always correct.

…lizing in asyncio (#130245)

…ariable as the outside scope (#130235)

Co-authored-by: Hugo van Kemenade <[email protected]>

Ensure colorize tests will run on dumb terminals (or environment with TERM=dumb set)
Co-authored-by: Hugo van Kemenade <[email protected]>

In Lib/idlelib/help_about.py, there are 2 links that are not underlined or colored, hence hard to tell that clicking works.  All buttons might get converted to colored and underlined links in the future.
---------

Co-authored-by: Terry Jan Reedy <[email protected]>

…H-130309)

The code is still flawed, because it does not recognize class and static
methods, and the first argument is not removed from the signature of
bound methods, but at least it does not worse than in 3.13 and older.

…inning with a clean system state (#130342)

Deprecate private C API functions:

* _PyUnicodeWriter_Init()
* _PyUnicodeWriter_Finish()
* _PyUnicodeWriter_Dealloc()
* _PyUnicodeWriter_WriteChar()
* _PyUnicodeWriter_WriteStr()
* _PyUnicodeWriter_WriteSubstring()
* _PyUnicodeWriter_WriteASCIIString()
* _PyUnicodeWriter_WriteLatin1String()

These functions are not deprecated in the internal C API (if the
Py_BUILD_CORE macro is defined).

…eErrors` (GH-129175)

Fix UBSan failures for `itemgetterobject`, `attrgetterobject`, `methodcallerobject`

Suppress unused return values

Fix UBSan failures for `OverlappedObject`

Fix UBSan failures for `Pdata`, `PicklerObject`, `UnpicklerObject`, `PicklerMemoProxyObject`, `UnpicklerMemoProxyObject`

Indicate safe fast cast to avoid redundant future checks

Use semantically correct parameter names

… in a recipe. (GH-130348)

…h-130133)

The `test_trace.test_coverage_ignore` test would fail if you had
`setuptools` installed, such as in `~/.local/lib/python3.xxx/site-packages/`.
Ignore everything in `sys.path` when running the test.

…e_RPartition (#130191)

Co-authored-by: Petr Viktorin <[email protected]>