Merge branch 'main' into envvars-manpage

Author: ZeroIntensity

.github/workflows/build.yml

@@ -658,6 +658,7 @@ jobs:
             build_asan,
             build_tsan,
             test_hypothesis,
+            cross-build-linux,
             '
             || ''
           }}

.github/workflows/tail-call.yml

@@ -41,6 +41,7 @@ jobs:
           - aarch64-apple-darwin/clang
           - x86_64-unknown-linux-gnu/gcc
           - aarch64-unknown-linux-gnu/gcc
+          - free-threading
         llvm:
           - 19
         include:
@@ -65,6 +66,9 @@ jobs:
           - target: aarch64-unknown-linux-gnu/gcc
             architecture: aarch64
             runner: ubuntu-22.04-arm
+          - target: free-threading
+            architecture: x86_64
+            runner: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
         with:
@@ -105,11 +109,20 @@ jobs:
           ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
       - name: Native Linux (release)
-        if: runner.os == 'Linux'
+        if: runner.os == 'Linux' && matrix.target != 'free-threading'
         run: |
           sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
           export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
           CC=clang-19 ./configure --with-tail-call-interp
           make all --jobs 4
           ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
+      - name: Native Linux with free-threading (release)
+        if: matrix.target == 'free-threading'
+        run: |
+          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
+          export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
+          CC=clang-19 ./configure --with-tail-call-interp --disable-gil
+          make all --jobs 4
+          ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
+

Doc/using/configure.rst

@@ -575,9 +575,6 @@ also be used to improve performance.
    .. versionchanged:: 3.12
       Use ThinLTO as the default optimization policy on Clang if the compiler accepts the flag.
 
-   .. versionchanged:: next
-      Revert to using full LTO as the default optimization policy on Clang.
-
 .. option:: --enable-bolt
 
    Enable usage of the `BOLT post-link binary optimizer

Doc/whatsnew/3.14.rst

@@ -1279,10 +1279,6 @@ Build changes
 * GNU Autoconf 2.72 is now required to generate :file:`configure`.
   (Contributed by Erlend Aasland in :gh:`115765`.)
 
-* CPython now uses Full LTO as the default link time optimization policy
-  on Clang. This reverts an earlier change in CPython 3.12.
-  (Contributed by Ken Jin in :gh:`130049`.)
-
 .. _whatsnew314-pep761:
 
 PEP 761: Discontinuation of PGP signatures

Grammar/python.gram

@@ -207,7 +207,7 @@ import_name[stmt_ty]: 'import' a=dotted_as_names { _PyAST_Import(a, EXTRA) }
 # note below: the ('.' | '...') is necessary because '...' is tokenized as ELLIPSIS
 import_from[stmt_ty]:
     | 'from' a=('.' | '...')* b=dotted_name 'import' c=import_from_targets {
-        _PyAST_ImportFrom(b->v.Name.id, c, _PyPegen_seq_count_dots(a), EXTRA) }
+        _PyPegen_checked_future_import(p, b->v.Name.id, c, _PyPegen_seq_count_dots(a), EXTRA) }
     | 'from' a=('.' | '...')+ 'import' b=import_from_targets {
         _PyAST_ImportFrom(NULL, b, _PyPegen_seq_count_dots(a), EXTRA) }
 import_from_targets[asdl_alias_seq*]:

Include/internal/pycore_object.h

@@ -74,6 +74,7 @@ PyAPI_FUNC(int) _PyObject_IsFreed(PyObject *);
     {                                               \
         .ob_ref_local = _Py_IMMORTAL_REFCNT_LOCAL,  \
         .ob_flags = _Py_STATICALLY_ALLOCATED_FLAG,  \
+        .ob_gc_bits = _PyGC_BITS_DEFERRED,          \
         .ob_type = (type)                           \
     }
 #else
@@ -612,7 +613,7 @@ _Py_TryIncrefCompare(PyObject **src, PyObject *op)
 static inline int
 _Py_TryIncrefCompareStackRef(PyObject **src, PyObject *op, _PyStackRef *out)
 {
-    if (_Py_IsImmortal(op) || _PyObject_HasDeferredRefcount(op)) {
+    if (_PyObject_HasDeferredRefcount(op)) {
         *out = (_PyStackRef){ .bits = (intptr_t)op | Py_TAG_DEFERRED };
         return 1;
     }

Include/internal/pycore_pylifecycle.h

@@ -75,7 +75,7 @@ extern PyStatus _Py_PreInitializeFromConfig(
 
 extern wchar_t * _Py_GetStdlibDir(void);
 
-extern int _Py_HandleSystemExit(int *exitcode_p);
+extern int _Py_HandleSystemExitAndKeyboardInterrupt(int *exitcode_p);
 
 extern PyObject* _PyErr_WriteUnraisableDefaultHook(PyObject *unraisable);
 

Include/internal/pycore_stackref.h

@@ -219,7 +219,7 @@ PyStackRef_FromPyObjectNew(PyObject *obj)
     // Make sure we don't take an already tagged value.
     assert(((uintptr_t)obj & Py_TAG_BITS) == 0);
     assert(obj != NULL);
-    if (_Py_IsImmortal(obj) || _PyObject_HasDeferredRefcount(obj)) {
+    if (_PyObject_HasDeferredRefcount(obj)) {
         return (_PyStackRef){ .bits = (uintptr_t)obj | Py_TAG_DEFERRED };
     }
     else {

Lib/test/test_flufl.py

@@ -34,6 +34,32 @@ def test_guido_as_bdfl(self):
         # parser reports the start of the token
         self.assertEqual(cm.exception.offset, 3)
 
+    def test_barry_as_bdfl_look_ma_with_no_compiler_flags(self):
+        # Check that the future import is handled by the parser
+        # even if the compiler flags are not passed.
+        code = "from __future__ import barry_as_FLUFL;2 {0} 3"
+        compile(code.format('<>'), '<BDFL test>', 'exec')
+        with self.assertRaises(SyntaxError) as cm:
+            compile(code.format('!='), '<FLUFL test>', 'exec')
+        self.assertRegex(str(cm.exception), "with Barry as BDFL, use '<>' instead of '!='")
+        self.assertIn('2 != 3', cm.exception.text)
+        self.assertEqual(cm.exception.filename, '<FLUFL test>')
+        self.assertEqual(cm.exception.lineno, 1)
+        self.assertEqual(cm.exception.offset, len(code) - 4)
+
+    def test_barry_as_bdfl_relative_import(self):
+        code = "from .__future__ import barry_as_FLUFL;2 {0} 3"
+        compile(code.format('!='), '<FLUFL test>', 'exec')
+        with self.assertRaises(SyntaxError) as cm:
+            compile(code.format('<>'), '<BDFL test>', 'exec')
+        self.assertRegex(str(cm.exception), "<BDFL test>")
+        self.assertIn('2 <> 3', cm.exception.text)
+        self.assertEqual(cm.exception.filename, '<BDFL test>')
+        self.assertEqual(cm.exception.lineno, 1)
+        self.assertEqual(cm.exception.offset, len(code) - 4)
+
+
+
 
 if __name__ == '__main__':
     unittest.main()

Lib/test/test_gettext.py

@@ -10,8 +10,6 @@
 
 # TODO:
 #  - Add new tests, for example for "dgettext"
-#  - Remove dummy tests, for example testing for single and double quotes
-#    has no sense, it would have if we were testing a parser (i.e. pygettext)
 #  - Tests should have only one assert.
 
 GNU_MO_DATA = b'''\
@@ -175,30 +173,6 @@ def test_some_translations_with_context(self):
         eq(pgettext('my other context', 'nudge nudge'),
            'wink wink (in "my other context")')
 
-    def test_double_quotes(self):
-        eq = self.assertEqual
-        # double quotes
-        eq(_("albatross"), 'albatross')
-        eq(_("mullusk"), 'bacon')
-        eq(_(r"Raymond Luxury Yach-t"), 'Throatwobbler Mangrove')
-        eq(_(r"nudge nudge"), 'wink wink')
-
-    def test_triple_single_quotes(self):
-        eq = self.assertEqual
-        # triple single quotes
-        eq(_('''albatross'''), 'albatross')
-        eq(_('''mullusk'''), 'bacon')
-        eq(_(r'''Raymond Luxury Yach-t'''), 'Throatwobbler Mangrove')
-        eq(_(r'''nudge nudge'''), 'wink wink')
-
-    def test_triple_double_quotes(self):
-        eq = self.assertEqual
-        # triple double quotes
-        eq(_("""albatross"""), 'albatross')
-        eq(_("""mullusk"""), 'bacon')
-        eq(_(r"""Raymond Luxury Yach-t"""), 'Throatwobbler Mangrove')
-        eq(_(r"""nudge nudge"""), 'wink wink')
-
     def test_multiline_strings(self):
         eq = self.assertEqual
         # multiline strings
@@ -285,30 +259,6 @@ def test_some_translations_with_context_and_domain(self):
         eq(gettext.dpgettext('gettext', 'my other context', 'nudge nudge'),
            'wink wink (in "my other context")')
 
-    def test_double_quotes(self):
-        eq = self.assertEqual
-        # double quotes
-        eq(self._("albatross"), 'albatross')
-        eq(self._("mullusk"), 'bacon')
-        eq(self._(r"Raymond Luxury Yach-t"), 'Throatwobbler Mangrove')
-        eq(self._(r"nudge nudge"), 'wink wink')
-
-    def test_triple_single_quotes(self):
-        eq = self.assertEqual
-        # triple single quotes
-        eq(self._('''albatross'''), 'albatross')
-        eq(self._('''mullusk'''), 'bacon')
-        eq(self._(r'''Raymond Luxury Yach-t'''), 'Throatwobbler Mangrove')
-        eq(self._(r'''nudge nudge'''), 'wink wink')
-
-    def test_triple_double_quotes(self):
-        eq = self.assertEqual
-        # triple double quotes
-        eq(self._("""albatross"""), 'albatross')
-        eq(self._("""mullusk"""), 'bacon')
-        eq(self._(r"""Raymond Luxury Yach-t"""), 'Throatwobbler Mangrove')
-        eq(self._(r"""nudge nudge"""), 'wink wink')
-
     def test_multiline_strings(self):
         eq = self.assertEqual
         # multiline strings