Merge branch '3.13' into 3.13_recursion_inconsistency_fix

Author: Yhg1s

.github/CODEOWNERS

@@ -6,6 +6,9 @@
 
 # GitHub
 .github/**                    @ezio-melotti @hugovk @webknjaz
+.github/workflows/jit.yml    @savannahostrowski
+Tools/build/compute-changes.py              @AA-Turner @hugovk @webknjaz
+Lib/test/test_tools/test_compute_changes.py @AA-Turner @hugovk @webknjaz
 
 # pre-commit
 .pre-commit-config.yaml       @hugovk
@@ -21,7 +24,7 @@ configure*                    @erlend-aasland @corona10
 **/*context*                  @1st1
 **/*genobject*                @markshannon
 **/*hamt*                     @1st1
-**/*jit*                      @brandtbucher
+**/*jit*                      @brandtbucher @savannahostrowski
 Python/perf_jit_trampoline.c  # Exclude the owners of "**/*jit*", above.
 Objects/set*                  @rhettinger
 Objects/dict*                 @methane @markshannon

.github/workflows/build.yml

@@ -62,7 +62,7 @@ jobs:
       - name: Install dependencies
         run: |
             sudo ./.github/workflows/posix-deps-apt.sh
-            sudo apt-get install -yq abigail-tools
+            sudo apt-get install -yq --no-install-recommends abigail-tools
       - name: Build CPython
         env:
           CFLAGS: -g3 -O0

.github/workflows/posix-deps-apt.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 apt-get update
 
-apt-get -yq install \
+apt-get -yq --no-install-recommends install \
     build-essential \
     pkg-config \
     ccache \

.github/workflows/regen-abidump.sh

@@ -2,7 +2,7 @@ set -ex
 
 export DEBIAN_FRONTEND=noninteractive
 ./.github/workflows/posix-deps-apt.sh
-apt-get install -yq abigail-tools python3
+apt-get install -yq --no-install-recommends abigail-tools python3
 export CFLAGS="-g3 -O0"
 ./configure --enable-shared && make
 make regen-abidump

.github/workflows/reusable-docs.yml

@@ -92,7 +92,7 @@ jobs:
         restore-keys: |
           ubuntu-doc-
     - name: 'Install Dependencies'
-      run: sudo ./.github/workflows/posix-deps-apt.sh && sudo apt-get install wamerican
+      run: sudo ./.github/workflows/posix-deps-apt.sh && sudo apt-get install --no-install-recommends wamerican
     - name: 'Configure CPython'
       run: ./configure --with-pydebug
     - name: 'Build CPython'

.github/workflows/verify-expat.yml

@@ -0,0 +1,32 @@
+name: Verify bundled libexpat
+
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - 'Modules/expat/**'
+      - '.github/workflows/verify-expat.yml'
+  pull_request:
+    paths:
+      - 'Modules/expat/**'
+      - '.github/workflows/verify-expat.yml'
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  verify:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+      - name: Download and verify bundled libexpat files
+        run: |
+          ./Modules/expat/refresh.sh
+          git diff --exit-code Modules/expat/

.pre-commit-config.yaml

@@ -49,6 +49,22 @@ repos:
         types: [python]
         exclude: ^Tools/c-analyzer/cpython/_parser.py
 
+  - repo: local
+    hooks:
+      - id: blurb-no-space-c-api
+        name: Check C API news entries
+        language: fail
+        entry: Space found in path, move to Misc/NEWS.d/next/C_API/
+        files: Misc/NEWS.d/next/C API/20.*.rst
+
+  - repo: local
+    hooks:
+      - id: blurb-no-space-core-and-builtins
+        name: Check Core and Builtins news entries
+        language: fail
+        entry: Space found in path, move to Misc/NEWS.d/next/Core_and_Builtins/
+        files: Misc/NEWS.d/next/Core and Builtins/20.*.rst
+
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v6.0.0
     hooks:

Doc/c-api/exceptions.rst

@@ -673,28 +673,40 @@ Signal Handling
       single: SIGINT (C macro)
       single: KeyboardInterrupt (built-in exception)
 
-   This function interacts with Python's signal handling.
+   Handle external interruptions, such as signals or activating a debugger,
+   whose processing has been delayed until it is safe
+   to run Python code and/or raise exceptions.
 
-   If the function is called from the main thread and under the main Python
-   interpreter, it checks whether a signal has been sent to the processes
-   and if so, invokes the corresponding signal handler.  If the :mod:`signal`
-   module is supported, this can invoke a signal handler written in Python.
+   For example, pressing :kbd:`Ctrl-C` causes a terminal to send the
+   :py:data:`signal.SIGINT` signal.
+   This function executes the corresponding Python signal handler, which,
+   by default, raises the :exc:`KeyboardInterrupt` exception.
 
-   The function attempts to handle all pending signals, and then returns ``0``.
-   However, if a Python signal handler raises an exception, the error
-   indicator is set and the function returns ``-1`` immediately (such that
-   other pending signals may not have been handled yet: they will be on the
-   next :c:func:`PyErr_CheckSignals()` invocation).
+   :c:func:`!PyErr_CheckSignals` should be called by long-running C code
+   frequently enough so that the response appears immediate to humans.
 
-   If the function is called from a non-main thread, or under a non-main
-   Python interpreter, it does nothing and returns ``0``.
+   Handlers invoked by this function currently include:
 
-   This function can be called by long-running C code that wants to
-   be interruptible by user requests (such as by pressing Ctrl-C).
+   - Signal handlers, including Python functions registered using
+     the :mod:`signal` module.
 
-   .. note::
-      The default Python signal handler for :c:macro:`!SIGINT` raises the
-      :exc:`KeyboardInterrupt` exception.
+     Signal handlers are only run in the main thread of the main interpreter.
+
+     (This is where the function got the name: originally, signals
+     were the only way to interrupt the interpreter.)
+
+   - Running the garbage collector, if necessary.
+
+   If any handler raises an exception, immediately return ``-1`` with that
+   exception set.
+   Any remaining interruptions are left to be processed on the next
+   :c:func:`PyErr_CheckSignals()` invocation, if appropriate.
+
+   If all handlers finish successfully, or there are no handlers to run,
+   return ``0``.
+
+   .. versionchanged:: 3.12
+      This function may now invoke the garbage collector.
 
 
 .. c:function:: void PyErr_SetInterrupt()

Doc/c-api/frame.rst

@@ -50,6 +50,7 @@ See also :ref:`Reflection <reflection>`.
 
    Return a :term:`strong reference`, or ``NULL`` if *frame* has no outer
    frame.
+   This raises no exceptions.
 
    .. versionadded:: 3.9
 

Doc/c-api/module.rst

@@ -263,6 +263,12 @@ or request "multi-phase initialization" by returning the definition struct itsel
       .. versionchanged:: 3.9
          No longer called before the module state is allocated.
 
+
+.. c:var:: PyTypeObject PyModuleDef_Type
+
+   The type of ``PyModuleDef`` objects.
+
+
 Single-phase initialization
 ...........................