Merge branch 'master' into remove-unknown_format

Author: skirpichev

.github/workflows/new-bugs-announce-notifier.yml

@@ -44,7 +44,7 @@ jobs:
                 // We need to truncate the body size, because the max size for
                 // the whole payload is 16kb. We want to be safe and assume that
                 // body can take up to ~8kb of space.
-                body   : issue.data.body.substring(0, 8000)
+                body   : (issue.data.body || "").substring(0, 8000)
               };
 
               const data = {

.gitignore

@@ -137,7 +137,7 @@ Tools/unicode/data/
 /config.status
 /config.status.lineno
 /.ccache
-/cross-build/
+/cross-build*/
 /jit_stencils*.h
 /platform
 /profile-clean-stamp

Doc/tutorial/introduction.rst

@@ -184,11 +184,11 @@ If you don't want characters prefaced by ``\`` to be interpreted as
 special characters, you can use *raw strings* by adding an ``r`` before
 the first quote::
 
-   >>> print('C:\some\name')  # here \n means newline!
-   C:\some
+   >>> print('C:\this\name')  # here \t means tab, \n means newline
+   C:      his
    ame
-   >>> print(r'C:\some\name')  # note the r before the quote
-   C:\some\name
+   >>> print(r'C:\this\name')  # note the r before the quote
+   C:\this\name
 
 There is one subtle aspect to raw strings: a raw string may not end in
 an odd number of ``\`` characters; see

Lib/test/test_struct.py

@@ -836,6 +836,8 @@ def test_operations_on_half_initialized_Struct(self):
         self.assertRaises(RuntimeError, S.unpack, spam)
         self.assertRaises(RuntimeError, S.unpack_from, spam)
         self.assertRaises(RuntimeError, getattr, S, 'format')
+        self.assertRaises(RuntimeError, S.__sizeof__)
+        self.assertRaises(RuntimeError, repr, S)
         self.assertEqual(S.size, -1)
 
 

Lib/test/test_tools/test_compute_changes.py

@@ -54,6 +54,8 @@ def test_ci_fuzz_stdlib(self):
                         f = p / "file"
                     elif p.is_file():
                         f = p
+                    else:
+                        self.fail(f"LIBRARY_FUZZER_PATHS contains an invalid entry: {p!r}")
                     result = process_changed_files({f})
                     self.assertTrue(result.run_ci_fuzz_stdlib)
                     self.assertTrue(is_fuzzable_library_file(f))

Misc/NEWS.d/next/Core_and_Builtins/2026-03-06-01-36-20.gh-issue-116738.OWVWRx.rst

@@ -0,0 +1,2 @@
+Make :meth:`!mmap.mmap.set_name` thread-safe on the :term:`free threaded <free
+threading>` build.

Misc/NEWS.d/next/Library/2026-03-07-15-00-00.gh-issue-145623.2Y7LzT.rst

@@ -0,0 +1,3 @@
+Fix crash in :mod:`struct` when calling :func:`repr` or
+``__sizeof__()`` on an uninitialized :class:`struct.Struct`
+object created via ``Struct.__new__()`` without calling ``__init__()``.

Modules/_queuemodule.c

@@ -165,6 +165,7 @@ RingBuf_Put(RingBuf *buf, PyObject *item)
         // Buffer is full, grow it.
         if (resize_ringbuf(buf, buf->items_cap * 2) < 0) {
             PyErr_NoMemory();
+            Py_DECREF(item);
             return -1;
         }
     }

Modules/_struct.c

@@ -2382,6 +2382,7 @@ static PyObject *
 Struct___sizeof___impl(PyStructObject *self)
 /*[clinic end generated code: output=2d0d78900b4cdb4e input=faca5925c1f1ffd0]*/
 {
+    ENSURE_STRUCT_IS_READY(self);
     size_t size = _PyObject_SIZE(Py_TYPE(self)) + sizeof(formatcode);
     for (formatcode *code = self->s_codes; code->fmtdef != NULL; code++) {
         size += sizeof(formatcode);
@@ -2393,6 +2394,7 @@ static PyObject *
 s_repr(PyObject *op)
 {
     PyStructObject *self = PyStructObject_CAST(op);
+    ENSURE_STRUCT_IS_READY(self);
     PyObject* fmt = PyUnicode_FromStringAndSize(
         PyBytes_AS_STRING(self->s_format), PyBytes_GET_SIZE(self->s_format));
     if (fmt == NULL) {