Merge branch 'main' of github.com:python/cpython into fix-gh-138577

* 'main' of github.com:python/cpython:
  gh-146197: Run -m test.pythoninfo on the Emscripten CI (#146332)
  gh-146325: Use `test.support.requires_fork` in test_fastpath_cache_cleared_in_forked_child (#146330)
  gh-146197: Add Emscripten to CI (#146198)
  gh-143387: Raise an exception instead of returning None when metadata file is missing. (#146234)
  gh-108907: ctypes: Document _type_ codes (GH-145837)
  gh-146175: Soft-deprecate outdated macros; convert internal usage (GH-146178)
  gh-146056: Rework ref counting in treebuilder_handle_end() (#146167)
  Add a warning about untrusted input to `configparser` docs (#146276)
  gh-145264: Do not ignore excess Base64 data after the first padded quad (GH-145267)
  gh-146308: Fix error handling issues in _remote_debugging module (#146309)
  gh-146192: Add base32 support to binascii (GH-146193)
  gh-135953: Properly obtain main thread identifier in Gecko Collector (#146045)
  gh-143414: Implement unique reference tracking for JIT, optimize unpacking of such tuples (GH-144300)
  gh-146261: Fix bug in `_Py_uop_sym_set_func_version` (GH-146291)
  gh-145144: Add more tests for UserList, UserDict, etc (GH-145145)
  gh-143959: Fix test_datetime if _datetime is unavailable (GH-145248)
  gh-146245: Fix reference and buffer leaks via audit hook in socket module (GH-146248)
  gh-140049: Colorize exception notes in `traceback.py` (#140051)
  Update docs for gh-146056 (GH-146213)

Author: CuriousLearner

.github/workflows/build.yml

@@ -371,6 +371,12 @@ jobs:
       - name: Build and test
         run: python3 Apple ci iOS --fast-ci --simulator 'iPhone SE (3rd generation),OS=17.5'
 
+  build-emscripten:
+    name: 'Emscripten'
+    needs: build-context
+    if: needs.build-context.outputs.run-emscripten == 'true'
+    uses: ./.github/workflows/reusable-emscripten.yml
+
   build-wasi:
     name: 'WASI'
     needs: build-context
@@ -650,6 +656,7 @@ jobs:
     - build-ubuntu
     - build-ubuntu-ssltests
     - build-ios
+    - build-emscripten
     - build-wasi
     - test-hypothesis
     - build-asan
@@ -664,6 +671,7 @@ jobs:
       with:
         allowed-failures: >-
           build-android,
+          build-emscripten,
           build-windows-msi,
           build-ubuntu-ssltests,
           test-hypothesis,
@@ -706,5 +714,6 @@ jobs:
           }}
           ${{ !fromJSON(needs.build-context.outputs.run-android) && 'build-android,' || '' }}
           ${{ !fromJSON(needs.build-context.outputs.run-ios) && 'build-ios,' || '' }}
+          ${{ !fromJSON(needs.build-context.outputs.run-emscripten) && 'build-emscripten,' || '' }}
           ${{ !fromJSON(needs.build-context.outputs.run-wasi) && 'build-wasi,' || '' }}
         jobs: ${{ toJSON(needs) }}

.github/workflows/reusable-context.yml

@@ -41,6 +41,9 @@ on:  # yamllint disable-line rule:truthy
       run-ubuntu:
         description: Whether to run the Ubuntu tests
         value: ${{ jobs.compute-changes.outputs.run-ubuntu }}  # bool
+      run-emscripten:
+        description: Whether to run the Emscripten tests
+        value: ${{ jobs.compute-changes.outputs.run-emscripten }}  # bool
       run-wasi:
         description: Whether to run the WASI tests
         value: ${{ jobs.compute-changes.outputs.run-wasi }}  # bool
@@ -65,6 +68,7 @@ jobs:
       run-macos: ${{ steps.changes.outputs.run-macos }}
       run-tests: ${{ steps.changes.outputs.run-tests }}
       run-ubuntu: ${{ steps.changes.outputs.run-ubuntu }}
+      run-emscripten: ${{ steps.changes.outputs.run-emscripten }}
       run-wasi: ${{ steps.changes.outputs.run-wasi }}
       run-windows-msi: ${{ steps.changes.outputs.run-windows-msi }}
       run-windows-tests: ${{ steps.changes.outputs.run-windows-tests }}

.github/workflows/reusable-emscripten.yml

@@ -0,0 +1,74 @@
+name: Reusable Emscripten
+
+on:
+  workflow_call:
+
+env:
+  FORCE_COLOR: 1
+
+jobs:
+  build-emscripten-reusable:
+    name: 'build and test'
+    runs-on: ubuntu-24.04
+    timeout-minutes: 60
+    steps:
+    - uses: actions/checkout@v6
+      with:
+        persist-credentials: false
+    - name: "Read Emscripten config"
+      id: emscripten-config
+      shell: python
+      run: |
+        import hashlib
+        import json
+        import os
+        import tomllib
+        from pathlib import Path
+
+        config = tomllib.loads(Path("Platforms/emscripten/config.toml").read_text())
+        h = hashlib.sha256()
+        h.update(json.dumps(config["dependencies"], sort_keys=True).encode())
+        h.update(Path("Platforms/emscripten/make_libffi.sh").read_bytes())
+        h.update(b'1') # Update to explicitly bust cache
+        emsdk_cache = Path(os.environ["RUNNER_TEMP"]) / "emsdk-cache"
+        with open(os.environ["GITHUB_OUTPUT"], "a") as f:
+            f.write(f"emscripten-version={config['emscripten-version']}\n")
+            f.write(f"node-version={config['node-version']}\n")
+            f.write(f"deps-hash={h.hexdigest()}\n")
+        with open(os.environ["GITHUB_ENV"], "a") as f:
+            f.write(f"EMSDK_CACHE={emsdk_cache}\n")
+    - name: "Install Node.js"
+      uses: actions/setup-node@v6
+      with:
+        node-version: ${{ steps.emscripten-config.outputs.node-version }}
+    - name: "Cache Emscripten SDK"
+      id: emsdk-cache
+      uses: actions/cache@v5
+      with:
+        path: ${{ env.EMSDK_CACHE }}
+        key: emsdk-${{ steps.emscripten-config.outputs.emscripten-version }}-${{ steps.emscripten-config.outputs.deps-hash }}
+        restore-keys: emsdk-${{ steps.emscripten-config.outputs.emscripten-version }}
+    - name: "Install Python"
+      uses: actions/setup-python@v6
+      with:
+        python-version: '3.x'
+    - name: "Runner image version"
+      run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
+    - name: "Install Emscripten"
+      run: python3 Platforms/emscripten install-emscripten
+    - name: "Configure build Python"
+      run: python3 Platforms/emscripten configure-build-python -- --config-cache --with-pydebug
+    - name: "Make build Python"
+      run: python3 Platforms/emscripten make-build-python
+    - name: "Make dependencies"
+      run: >-
+        python3 Platforms/emscripten make-dependencies
+        ${{ steps.emsdk-cache.outputs.cache-hit == 'true' && '--check-up-to-date' || '' }}
+    - name: "Configure host Python"
+      run: python3 Platforms/emscripten configure-host --host-runner node -- --config-cache
+    - name: "Make host Python"
+      run: python3 Platforms/emscripten make-host
+    - name: "Display build info"
+      run: python3 Platforms/emscripten run --pythoninfo
+    - name: "Test"
+      run: python3 Platforms/emscripten run --test

Doc/c-api/intro.rst

@@ -526,14 +526,26 @@ to the C language.
 Outdated macros
 ---------------
 
-The following macros have been used to features that have been standardized
-in C11.
+The following :term:`soft deprecated` macros have been used to features that
+have been standardized in C11 (or previous standards).
 
 .. c:macro:: Py_ALIGNED(num)
 
-   Specify alignment to *num* bytes on compilers that support it.
+   On some GCC-like compilers, specify alignment to *num* bytes.
+   This does nothing on other compilers.
 
-   Consider using the C11 standard ``_Alignas`` specifier over this macro.
+   Use the standard ``alignas`` specifier rather than this macro.
+
+   .. deprecated:: next
+      The macro is :term:`soft deprecated`.
+
+.. c:macro:: PY_FORMAT_SIZE_T
+
+   The :c:func:`printf` formatting modifier for :c:type:`size_t`.
+   Use ``"z"`` directly instead.
+
+   .. deprecated:: next
+      The macro is :term:`soft deprecated`.
 
 .. c:macro:: Py_LL(number)
              Py_ULL(number)
@@ -546,6 +558,38 @@ in C11.
 
    Consider using the C99 standard suffixes ``LL`` and ``LLU`` directly.
 
+   .. deprecated:: next
+      The macro is :term:`soft deprecated`.
+
+.. c:macro:: PY_LONG_LONG
+             PY_INT32_T
+             PY_UINT32_T
+             PY_INT64_T
+             PY_UINT64_T
+
+   Aliases for the types :c:type:`!long long`, :c:type:`!int32_t`,
+   :c:type:`!uint32_t`. :c:type:`!int64_t` and :c:type:`!uint64_t`,
+   respectively.
+   Historically, these types needed compiler-specific extensions.
+
+   .. deprecated:: next
+      These macros are :term:`soft deprecated`.
+
+.. c:macro:: PY_LLONG_MIN
+             PY_LLONG_MAX
+             PY_ULLONG_MAX
+             PY_SIZE_MAX
+
+   Aliases for the values :c:macro:`!LLONG_MIN`, :c:macro:`!LLONG_MAX`,
+   :c:macro:`!ULLONG_MAX`, and :c:macro:`!SIZE_MAX`, respectively.
+   Use these standard names instead.
+
+   The required header, ``<limits.h>``,
+   :ref:`is included <capi-system-includes>` in ``Python.h``.
+
+   .. deprecated:: next
+      These macros are :term:`soft deprecated`.
+
 .. c:macro:: Py_MEMCPY(dest, src, n)
 
    This is a :term:`soft deprecated` alias to :c:func:`!memcpy`.
@@ -554,6 +598,25 @@ in C11.
    .. deprecated:: 3.14
       The macro is :term:`soft deprecated`.
 
+.. c:macro:: Py_UNICODE_SIZE
+
+   Size of the :c:type:`!wchar_t` type.
+   Use ``sizeof(wchar_t)`` or ``WCHAR_WIDTH/8`` instead.
+
+   The required header for the latter, ``<limits.h>``,
+   :ref:`is included <capi-system-includes>` in ``Python.h``.
+
+   .. deprecated:: next
+      The macro is :term:`soft deprecated`.
+
+.. c:macro:: Py_UNICODE_WIDE
+
+   Defined if ``wchar_t`` can hold a Unicode character (UCS-4).
+   Use ``sizeof(wchar_t) >= 4`` instead
+
+   .. deprecated:: next
+      The macro is :term:`soft deprecated`.
+
 .. c:macro:: Py_VA_COPY
 
    This is a :term:`soft deprecated` alias to the C99-standard ``va_copy``
@@ -564,6 +627,9 @@ in C11.
    .. versionchanged:: 3.6
       This is now an alias to ``va_copy``.
 
+   .. deprecated:: next
+      The macro is :term:`soft deprecated`.
+
 
 .. _api-objects:
 

Doc/c-api/unicode.rst

@@ -1855,8 +1855,6 @@ object.
    On success, return ``0``.
    On error, set an exception, leave the writer unchanged, and return ``-1``.
 
-   .. versionadded:: 3.14
-
 .. c:function:: int PyUnicodeWriter_WriteWideChar(PyUnicodeWriter *writer, const wchar_t *str, Py_ssize_t size)
 
    Write the wide string *str* into *writer*.
@@ -1892,6 +1890,10 @@ object.
    On success, return ``0``.
    On error, set an exception, leave the writer unchanged, and return ``-1``.
 
+   .. versionchanged:: 3.14.4
+
+      Added support for ``NULL``.
+
 .. c:function:: int PyUnicodeWriter_WriteSubstring(PyUnicodeWriter *writer, PyObject *str, Py_ssize_t start, Py_ssize_t end)
 
    Write the substring ``str[start:end]`` into *writer*.

Doc/deprecations/c-api-pending-removal-in-3.15.rst

@@ -7,8 +7,6 @@ Pending removal in Python 3.15
   Use :c:func:`PyWeakref_GetRef` instead. The `pythoncapi-compat project
   <https://github.com/python/pythoncapi-compat/>`__ can be used to get
   :c:func:`PyWeakref_GetRef` on Python 3.12 and older.
-* :c:type:`Py_UNICODE` type and the :c:macro:`!Py_UNICODE_WIDE` macro:
-  Use :c:type:`wchar_t` instead.
 * :c:func:`!PyUnicode_AsDecodedObject`:
   Use :c:func:`PyCodec_Decode` instead.
 * :c:func:`!PyUnicode_AsDecodedUnicode`:

Doc/library/array.rst

@@ -63,6 +63,13 @@ Notes:
 (2)
    .. versionadded:: 3.13
 
+.. seealso::
+
+   The :ref:`ctypes <ctypes-fundamental-data-types>` and
+   :ref:`struct <format-characters>` modules,
+   as well as third-party modules like `numpy <https://numpy.org/doc/stable/reference/arrays.interface.html#object.__array_interface__>`__,
+   use similar -- but slightly different -- type codes.
+
 
 The actual representation of values is determined by the machine architecture
 (strictly speaking, by the C implementation).  The actual size can be accessed

Doc/library/binascii.rst

@@ -183,6 +183,38 @@ The :mod:`!binascii` module defines the following functions:
    .. versionadded:: 3.15
 
 
+.. function:: a2b_base32(string, /, *, alphabet=BASE32_ALPHABET)
+
+   Convert base32 data back to binary and return the binary data.
+
+   Valid base32 data contains characters from the base32 alphabet specified
+   in :rfc:`4648` in groups of eight (if necessary, the final group is padded
+   to eight characters with ``=``). Each group encodes 40 bits of binary data
+   in the range from ``0`` to ``2 ** 40 - 1``, inclusive.
+
+   .. note::
+      This function does not map lowercase characters (which are invalid in
+      standard base32) to their uppercase counterparts, nor does it
+      contextually map ``0`` to ``O`` and ``1`` to ``I``/``L`` as :rfc:`4648`
+      allows.
+
+   Optional *alphabet* must be a :class:`bytes` object of length 32 which
+   specifies an alternative alphabet.
+
+   Invalid base32 data will raise :exc:`binascii.Error`.
+
+   .. versionadded:: next
+
+.. function:: b2a_base32(data, /, *, alphabet=BASE32_ALPHABET)
+
+   Convert binary data to a line of ASCII characters in base32 coding,
+   as specified in :rfc:`4648`. The return value is the converted line.
+
+   Optional *alphabet* must be a :term:`bytes-like object` of length 32 which
+   specifies an alternative alphabet.
+
+   .. versionadded:: next
+
 .. function:: a2b_qp(data, header=False)
 
    Convert a block of quoted-printable data back to binary and return the binary
@@ -327,6 +359,20 @@ The :mod:`!binascii` module defines the following functions:
 
    .. versionadded:: next
 
+.. data:: BASE32_ALPHABET
+
+   The Base 32 alphabet according to :rfc:`4648`.
+
+   .. versionadded:: next
+
+.. data:: BASE32HEX_ALPHABET
+
+   The "Extended Hex" Base 32 alphabet according to :rfc:`4648`.
+   Data encoded with this alphabet maintains its sort order during bitwise
+   comparisons.
+
+   .. versionadded:: next
+
 
 .. seealso::
 

Doc/library/configparser.rst

@@ -24,6 +24,11 @@ can be customized by end users easily.
    This library does *not* interpret or write the value-type prefixes used in
    the Windows Registry extended version of INI syntax.
 
+.. warning::
+   Be cautious when parsing data from untrusted sources. A malicious
+   INI file may cause the decoder to consume considerable CPU and memory
+   resources. Limiting the size of data to be parsed is recommended.
+
 .. seealso::
 
    Module :mod:`tomllib`