[pull] main from python:main

.github/actionlint.yaml

@@ -1,6 +1,7 @@
 self-hosted-runner:
   # Pending https://github.com/rhysd/actionlint/issues/533
-  labels: ["windows-11-arm"]
+  # and https://github.com/rhysd/actionlint/issues/571
+  labels: ["windows-11-arm", "macos-15-intel"]
 
 config-variables: null
 

.github/workflows/build.yml

@@ -202,13 +202,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Cirrus and macos-14 are M1, macos-13 is default GHA Intel.
+        # Cirrus and macos-14 are M1, macos-15-intel is default GHA Intel.
         # macOS 13 only runs tests against the GIL-enabled CPython.
         # Cirrus used for upstream, macos-14 for forks.
         os:
         - ghcr.io/cirruslabs/macos-runner:sonoma
         - macos-14
-        - macos-13
+        - macos-15-intel
         is-fork:  # only used for the exclusion trick
         - ${{ github.repository_owner != 'python' }}
         free-threading:
@@ -219,7 +219,7 @@ jobs:
           is-fork: true
         - os: macos-14
           is-fork: false
-        - os: macos-13
+        - os: macos-15-intel
           free-threading: true
     uses: ./.github/workflows/reusable-macos.yml
     with:

.github/workflows/jit.yml

@@ -81,7 +81,7 @@ jobs:
             runner: windows-11-arm
           - target: x86_64-apple-darwin/clang
             architecture: x86_64
-            runner: macos-13
+            runner: macos-15-intel
           - target: aarch64-apple-darwin/clang
             architecture: aarch64
             runner: macos-14
@@ -106,15 +106,10 @@ jobs:
           ./PCbuild/build.bat --experimental-jit ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }}
           ./PCbuild/rt.bat ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }} -q --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-        # The `find` line is required as a result of https://github.com/actions/runner-images/issues/9966.
-        # This is a bug in the macOS runner image where the pre-installed Python is installed in the same
-        # directory as the Homebrew Python, which causes the build to fail for macos-13. This line removes
-        # the symlink to the pre-installed Python so that the Homebrew Python is used instead.
       - name: macOS
         if: runner.os == 'macOS'
         run: |
           brew update
-          find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
           brew install llvm@${{ matrix.llvm }}
           export SDKROOT="$(xcrun --show-sdk-path)"
           # Set MACOSX_DEPLOYMENT_TARGET and -Werror=unguarded-availability to

.github/workflows/reusable-macos.yml

@@ -60,15 +60,15 @@ jobs:
           --prefix=/opt/python-dev \
           --with-openssl="$(brew --prefix [email protected])"
     - name: Build CPython
-      if : ${{ inputs.free-threading || inputs.os != 'macos-13' }}
+      if : ${{ inputs.free-threading || inputs.os != 'macos-15-intel' }}
       run: gmake -j8
     - name: Build CPython for compiler warning check
-      if : ${{ !inputs.free-threading && inputs.os == 'macos-13' }}
+      if : ${{ !inputs.free-threading && inputs.os == 'macos-15-intel' }}
       run: set -o pipefail; gmake -j8 --output-sync 2>&1 | tee compiler_output_macos.txt
     - name: Display build info
       run: make pythoninfo
     - name: Check compiler warnings
-      if : ${{ !inputs.free-threading && inputs.os == 'macos-13' }}
+      if : ${{ !inputs.free-threading && inputs.os == 'macos-15-intel' }}
       run: >-
         python3 Tools/build/check_warnings.py
         --compiler-output-file-path=compiler_output_macos.txt

.github/workflows/tail-call.yml

@@ -58,7 +58,7 @@ jobs:
 #            runner: windows-2022
           - target: x86_64-apple-darwin/clang
             architecture: x86_64
-            runner: macos-13
+            runner: macos-15-intel
           - target: aarch64-apple-darwin/clang
             architecture: aarch64
             runner: macos-14
@@ -101,17 +101,10 @@ jobs:
           set LLVMInstallDir=C:\Program Files\LLVM
           ./PCbuild/build.bat --tail-call-interp -p ${{ matrix.architecture }}
 
-        # The `find` line is required as a result of https://github.com/actions/runner-images/issues/9966.
-        # This is a bug in the macOS runner image where the pre-installed Python is installed in the same
-        # directory as the Homebrew Python, which causes the build to fail for macos-13. This line removes
-        # the symlink to the pre-installed Python so that the Homebrew Python is used instead.
-        # Note: when a new LLVM is released, the homebrew installation directory changes, so the builds will fail.
-        # We either need to upgrade LLVM or change the directory being pointed to.
       - name: Native macOS (release)
         if: runner.os == 'macOS'
         run: |
           brew update
-          find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
           brew install llvm@${{ matrix.llvm }}
           export SDKROOT="$(xcrun --show-sdk-path)"
           export PATH="/usr/local/opt/llvm@${{ matrix.llvm }}/bin:$PATH"

Lib/test/test_opcache.py

@@ -567,6 +567,14 @@ def test(default=None):
         with self.assertRaises(RecursionError):
             test()
 
+    def test_dont_specialize_custom_vectorcall(self):
+        def f():
+            raise Exception("no way")
+
+        _testinternalcapi.set_vectorcall_nop(f)
+        for _ in range(_testinternalcapi.SPECIALIZATION_THRESHOLD):
+            f()
+
 
 def make_deferred_ref_count_obj():
     """Create an object that uses deferred reference counting.

Modules/_testinternalcapi.c

@@ -2399,6 +2399,25 @@ simple_pending_call(PyObject *self, PyObject *callable)
     Py_RETURN_NONE;
 }
 
+static PyObject *
+vectorcall_nop(PyObject *callable, PyObject *const *args,
+               size_t nargsf, PyObject *kwnames)
+{
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+set_vectorcall_nop(PyObject *self, PyObject *func)
+{
+    if (!PyFunction_Check(func)) {
+        PyErr_SetString(PyExc_TypeError, "expected function");
+        return NULL;
+    }
+
+    ((PyFunctionObject*)func)->vectorcall = vectorcall_nop;
+    Py_RETURN_NONE;
+}
+
 static PyMethodDef module_functions[] = {
     {"get_configs", get_configs, METH_NOARGS},
     {"get_recursion_depth", get_recursion_depth, METH_NOARGS},
@@ -2507,6 +2526,7 @@ static PyMethodDef module_functions[] = {
     {"emscripten_set_up_async_input_device", emscripten_set_up_async_input_device, METH_NOARGS},
 #endif
     {"simple_pending_call", simple_pending_call, METH_O},
+    {"set_vectorcall_nop", set_vectorcall_nop, METH_O},
     {NULL, NULL} /* sentinel */
 };
 

Python/specialize.c

@@ -630,6 +630,7 @@ _PyCode_Quicken(_Py_CODEUNIT *instructions, Py_ssize_t size, int enable_counters
 #define SPEC_FAIL_CALL_INIT_NOT_PYTHON 21
 #define SPEC_FAIL_CALL_PEP_523 22
 #define SPEC_FAIL_CALL_BOUND_METHOD 23
+#define SPEC_FAIL_CALL_VECTORCALL 24
 #define SPEC_FAIL_CALL_CLASS_MUTABLE 26
 #define SPEC_FAIL_CALL_METHOD_WRAPPER 28
 #define SPEC_FAIL_CALL_OPERATOR_WRAPPER 29
@@ -2071,6 +2072,10 @@ specialize_py_call(PyFunctionObject *func, _Py_CODEUNIT *instr, int nargs,
         SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_PEP_523);
         return -1;
     }
+    if (func->vectorcall != _PyFunction_Vectorcall) {
+        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_VECTORCALL);
+        return -1;
+    }
     int argcount = -1;
     if (kind == SPEC_FAIL_CODE_NOT_OPTIMIZED) {
         SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CODE_NOT_OPTIMIZED);
@@ -2110,6 +2115,10 @@ specialize_py_call_kw(PyFunctionObject *func, _Py_CODEUNIT *instr, int nargs,
         SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_PEP_523);
         return -1;
     }
+    if (func->vectorcall != _PyFunction_Vectorcall) {
+        SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CALL_VECTORCALL);
+        return -1;
+    }
     if (kind == SPEC_FAIL_CODE_NOT_OPTIMIZED) {
         SPECIALIZATION_FAIL(CALL, SPEC_FAIL_CODE_NOT_OPTIMIZED);
         return -1;