[pull] main from python:main

.github/workflows/reusable-docs.yml

@@ -3,6 +3,17 @@ name: Reusable Docs
 on:
   workflow_call:
   workflow_dispatch:
+  # Pushes to CPython branches seed the pip caches under the exact keys every
+  # docs PR restores from. Without a branch-scoped copy, each PR saves a
+  # duplicate into its own refs/pull/N/merge scope that nothing else can read.
+  push:
+    branches:
+      - main
+      - '3.*'
+    paths:
+      - 'Doc/pylock.toml'
+      - 'Doc/requirements.txt'
+      - '.github/workflows/reusable-docs.yml'
 
 permissions:
   contents: read

Doc/library/email.utils.rst

@@ -70,7 +70,7 @@ of the new API.
       Add *strict* optional parameter and reject malformed inputs by default.
 
 
-.. function:: formataddr(pair, charset='utf-8')
+.. function:: formataddr(pair, charset='utf-8', *, strict=True)
 
    The inverse of :meth:`parseaddr`, this takes a 2-tuple of the form ``(realname,
    email_address)`` and returns the string value suitable for a :mailheader:`To` or
@@ -82,9 +82,16 @@ of the new API.
    characters.  Can be an instance of :class:`str` or a
    :class:`~email.charset.Charset`.  Defaults to ``utf-8``.
 
+   If *strict* is true (the default), raise :exc:`ValueError` for inputs that
+   contain CR or LF, which are not allowed in an email address.  Set *strict*
+   to ``False`` to allow non-strict inputs.
+
    .. versionchanged:: 3.3
       Added the *charset* option.
 
+   .. versionchanged:: next
+      Added the *strict* parameter.
+
 
 .. function:: getaddresses(fieldvalues, *, strict=True)
 

Include/internal/pycore_dict.h

@@ -90,6 +90,7 @@ typedef struct {
 } PyDictUnicodeEntry;
 
 extern PyDictKeysObject *_PyDict_NewKeysForClass(PyHeapTypeObject *);
+extern void _PyDict_RemoveKeysForClass(PyHeapTypeObject *);
 extern PyObject *_PyDict_FromKeys(PyObject *, PyObject *, PyObject *);
 
 /* Implementations of the `|` and `|=` operators for dict, used by the
@@ -239,6 +240,17 @@ struct _dictkeysobject {
        see the DK_ENTRIES() / DK_UNICODE_ENTRIES() functions below */
 };
 
+struct _instancekeysobject {
+    PyTypeObject* dsk_owning_type;
+    struct _dictkeysobject dsk_keys;
+};
+
+static inline struct _instancekeysobject *_PyDictKeys_AsSharedKeys(struct _dictkeysobject *keys)
+{
+    assert(keys->dk_kind == DICT_KEYS_SPLIT);
+    return _Py_CONTAINER_OF(keys, struct _instancekeysobject, dsk_keys);
+}
+
 /* This must be no more than 250, for the prefix size to fit in one byte. */
 #define SHARED_KEYS_MAX_SIZE 30
 #define NEXT_LOG2_SHARED_KEYS_MAX_SIZE 6

Include/internal/pycore_typeobject.h

@@ -148,6 +148,9 @@ extern int _PyType_AddMethod(PyTypeObject *, PyMethodDef *);
 extern void _PyType_SetFlagsRecursive(PyTypeObject *self, unsigned long mask,
                                       unsigned long flags);
 
+// Raise PyType_Modified with the type lock already held.
+extern void _PyType_Modified_Unlocked(PyTypeObject *type);
+
 PyAPI_FUNC(void) _PyType_SetVersion(PyTypeObject *tp, unsigned int version);
 PyTypeObject *_PyType_LookupByVersion(unsigned int version);