Merge branch 'main' into modulelocals

* main:
  pythongh-105540: Fix code generator tests (python#105707)
  pythongh-105375: Explicitly initialise all {Pickler,Unpickler}Object fields (python#105686)
  pythongh-105331: Change `asyncio.sleep` to raise ``ValueError` for nan (python#105641)
  Remove support for legacy bytecode instructions (python#105705)

Author: carljm

Doc/library/asyncio-task.rst

@@ -426,6 +426,9 @@ Sleeping
    .. versionchanged:: 3.10
       Removed the *loop* parameter.
 
+   .. versionchanged:: 3.13
+      Raises :exc:`ValueError` if *delay* is :data:`~math.nan`.
+
 
 Running Tasks Concurrently
 ==========================

Lib/asyncio/tasks.py

@@ -15,6 +15,7 @@
 import functools
 import inspect
 import itertools
+import math
 import types
 import warnings
 import weakref
@@ -646,6 +647,9 @@ async def sleep(delay, result=None):
         await __sleep0()
         return result
 
+    if math.isnan(delay):
+        raise ValueError("Invalid delay: NaN (not a number)")
+
     loop = events.get_running_loop()
     future = loop.create_future()
     h = loop.call_later(delay,

Lib/test/test_asyncio/test_tasks.py

@@ -1609,6 +1609,21 @@ async def sleeper(dt, arg):
         self.assertEqual(t.result(), 'yeah')
         self.assertAlmostEqual(0.1, loop.time())
 
+    def test_sleep_when_delay_is_nan(self):
+
+        def gen():
+            yield
+
+        loop = self.new_test_loop(gen)
+
+        async def sleeper():
+            await asyncio.sleep(float("nan"))
+
+        t = self.new_task(loop, sleeper())
+
+        with self.assertRaises(ValueError):
+            loop.run_until_complete(t)
+
     def test_sleep_cancel(self):
 
         def gen():

Misc/NEWS.d/next/Core and Builtins/2023-06-11-09-14-30.gh-issue-105331.nlZvoW.rst

@@ -0,0 +1,2 @@
+Raise :exc:`ValueError` if the ``delay`` argument to :func:`asyncio.sleep` is a NaN (matching :func:`time.sleep`).
+

Modules/_pickle.c

@@ -1145,42 +1145,49 @@ _Pickler_Write(PicklerObject *self, const char *s, Py_ssize_t data_len)
 static PicklerObject *
 _Pickler_New(PickleState *st)
 {
-    PicklerObject *self;
-
-    self = PyObject_GC_New(PicklerObject, st->Pickler_Type);
-    if (self == NULL)
+    PyMemoTable *memo = PyMemoTable_New();
+    if (memo == NULL) {
         return NULL;
+    }
+
+    const Py_ssize_t max_output_len = WRITE_BUF_SIZE;
+    PyObject *output_buffer = PyBytes_FromStringAndSize(NULL, max_output_len);
+    if (output_buffer == NULL) {
+        goto error;
+    }
 
+    PicklerObject *self = PyObject_GC_New(PicklerObject, st->Pickler_Type);
+    if (self == NULL) {
+        goto error;
+    }
+
+    self->memo = memo;
     self->pers_func = NULL;
+    self->pers_func_self = NULL;
     self->dispatch_table = NULL;
-    self->buffer_callback = NULL;
+    self->reducer_override = NULL;
     self->write = NULL;
+    self->output_buffer = output_buffer;
+    self->output_len = 0;
+    self->max_output_len = max_output_len;
     self->proto = 0;
     self->bin = 0;
     self->framing = 0;
     self->frame_start = -1;
+    self->buf_size = 0;
     self->fast = 0;
     self->fast_nesting = 0;
     self->fix_imports = 0;
     self->fast_memo = NULL;
-    self->max_output_len = WRITE_BUF_SIZE;
-    self->output_len = 0;
-    self->reducer_override = NULL;
-
-    self->memo = PyMemoTable_New();
-    if (self->memo == NULL) {
-        Py_DECREF(self);
-        return NULL;
-    }
-    self->output_buffer = PyBytes_FromStringAndSize(NULL,
-                                                    self->max_output_len);
-    if (self->output_buffer == NULL) {
-        Py_DECREF(self);
-        return NULL;
-    }
+    self->buffer_callback = NULL;
 
     PyObject_GC_Track(self);
     return self;
+
+error:
+    PyMem_Free(memo);
+    Py_XDECREF(output_buffer);
+    return NULL;
 }
 
 static int
@@ -1628,14 +1635,31 @@ _Unpickler_MemoCleanup(UnpicklerObject *self)
 static UnpicklerObject *
 _Unpickler_New(PyObject *module)
 {
-    UnpicklerObject *self;
+    const int MEMO_SIZE = 32;
+    PyObject **memo = _Unpickler_NewMemo(MEMO_SIZE);
+    if (memo == NULL) {
+        return NULL;
+    }
+
     PickleState *st = _Pickle_GetState(module);
+    PyObject *stack = Pdata_New(st);
+    if (stack == NULL) {
+        goto error;
+    }
 
-    self = PyObject_GC_New(UnpicklerObject, st->Unpickler_Type);
-    if (self == NULL)
-        return NULL;
+    UnpicklerObject *self = PyObject_GC_New(UnpicklerObject,
+                                            st->Unpickler_Type);
+    if (self == NULL) {
+        goto error;
+    }
 
+    self->stack = (Pdata *)stack;
+    self->memo = memo;
+    self->memo_size = MEMO_SIZE;
+    self->memo_len = 0;
     self->pers_func = NULL;
+    self->pers_func_self = NULL;
+    memset(&self->buffer, 0, sizeof(Py_buffer));
     self->input_buffer = NULL;
     self->input_line = NULL;
     self->input_len = 0;
@@ -1653,22 +1677,14 @@ _Unpickler_New(PyObject *module)
     self->marks_size = 0;
     self->proto = 0;
     self->fix_imports = 0;
-    memset(&self->buffer, 0, sizeof(Py_buffer));
-    self->memo_size = 32;
-    self->memo_len = 0;
-    self->memo = _Unpickler_NewMemo(self->memo_size);
-    if (self->memo == NULL) {
-        Py_DECREF(self);
-        return NULL;
-    }
-    self->stack = (Pdata *)Pdata_New(st);
-    if (self->stack == NULL) {
-        Py_DECREF(self);
-        return NULL;
-    }
 
     PyObject_GC_Track(self);
     return self;
+
+error:
+    PyMem_Free(memo);
+    Py_XDECREF(stack);
+    return NULL;
 }
 
 /* Returns -1 (with an exception set) on failure, 0 on success. This may

Tools/cases_generator/generate_cases.py

@@ -230,7 +230,7 @@ class Instruction:
 
     # Parts of the underlying instruction definition
     inst: parser.InstDef
-    kind: typing.Literal["inst", "op", "legacy"]  # Legacy means no (input -- output)
+    kind: typing.Literal["inst", "op"]
     name: str
     block: parser.Block
     block_text: list[str]  # Block.text, less curlies, less PREDICT() calls
@@ -856,8 +856,6 @@ def get_stack_effect_info(
         self, thing: parser.InstDef | parser.Macro | parser.Pseudo
     ) -> tuple[AnyInstruction | None, str, str]:
         def effect_str(effects: list[StackEffect]) -> str:
-            if getattr(thing, "kind", None) == "legacy":
-                return str(-1)
             n_effect, sym_effect = list_effect_size(effects)
             if sym_effect:
                 return f"{sym_effect} + {n_effect}" if n_effect else sym_effect

Tools/cases_generator/parser.py

@@ -101,7 +101,7 @@ class OpName(Node):
 class InstHeader(Node):
     override: bool
     register: bool
-    kind: Literal["inst", "op", "legacy"]  # Legacy means no (inputs -- outputs)
+    kind: Literal["inst", "op"]
     name: str
     inputs: list[InputEffect]
     outputs: list[OutputEffect]
@@ -111,7 +111,7 @@ class InstHeader(Node):
 class InstDef(Node):
     override: bool
     register: bool
-    kind: Literal["inst", "op", "legacy"]
+    kind: Literal["inst", "op"]
     name: str
     inputs: list[InputEffect]
     outputs: list[OutputEffect]
@@ -174,9 +174,6 @@ def inst_header(self) -> InstHeader | None:
                     if self.expect(lx.RPAREN):
                         if (tkn := self.peek()) and tkn.kind == lx.LBRACE:
                             return InstHeader(override, register, kind, name, inp, outp)
-                elif self.expect(lx.RPAREN) and kind == "inst":
-                    # No legacy stack effect if kind is "op".
-                    return InstHeader(override, register, "legacy", name, [], [])
         return None
 
     def io_effect(self) -> tuple[list[InputEffect], list[OutputEffect]]: