From 2e7ddb3f77d90d1f995a2ac6e8665d97f3cd0463 Mon Sep 17 00:00:00 2001
From: Oleg Iarygin <oleg@arhadthedev.net>
Date: Sun, 3 Jul 2022 00:32:56 +0300
Subject: [PATCH 1/3] Fix forced arg format in AC-processed multiprocessing

---
 .../clinic/multiprocessing.c.h                | 30 +++++++++++++++----
 Modules/_multiprocessing/multiprocessing.c    | 10 ++++++-
 2 files changed, 33 insertions(+), 7 deletions(-)

diff --git a/Modules/_multiprocessing/clinic/multiprocessing.c.h b/Modules/_multiprocessing/clinic/multiprocessing.c.h
index e9953215aca7df..3a30833904792d 100644
--- a/Modules/_multiprocessing/clinic/multiprocessing.c.h
+++ b/Modules/_multiprocessing/clinic/multiprocessing.c.h
@@ -21,7 +21,8 @@ _multiprocessing_closesocket(PyObject *module, PyObject *arg)
     PyObject *return_value = NULL;
     HANDLE handle;
 
-    if (!PyArg_Parse(arg, ""F_HANDLE":closesocket", &handle)) {
+    handle = PyLong_AsVoidPtr(arg);
+    if (!handle && PyErr_Occurred()) {
         goto exit;
     }
     return_value = _multiprocessing_closesocket_impl(module, handle);
@@ -52,8 +53,15 @@ _multiprocessing_recv(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     HANDLE handle;
     int size;
 
-    if (!_PyArg_ParseStack(args, nargs, ""F_HANDLE"i:recv",
-        &handle, &size)) {
+    if (!_PyArg_CheckPositional("recv", nargs, 2, 2)) {
+        goto exit;
+    }
+    handle = PyLong_AsVoidPtr(args[0]);
+    if (!handle && PyErr_Occurred()) {
+        goto exit;
+    }
+    size = _PyLong_AsInt(args[1]);
+    if (size == -1 && PyErr_Occurred()) {
         goto exit;
     }
     return_value = _multiprocessing_recv_impl(module, handle, size);
@@ -84,8 +92,18 @@ _multiprocessing_send(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
     HANDLE handle;
     Py_buffer buf = {NULL, NULL};
 
-    if (!_PyArg_ParseStack(args, nargs, ""F_HANDLE"y*:send",
-        &handle, &buf)) {
+    if (!_PyArg_CheckPositional("send", nargs, 2, 2)) {
+        goto exit;
+    }
+    handle = PyLong_AsVoidPtr(args[0]);
+    if (!handle && PyErr_Occurred()) {
+        goto exit;
+    }
+    if (PyObject_GetBuffer(args[1], &buf, PyBUF_SIMPLE) != 0) {
+        goto exit;
+    }
+    if (!PyBuffer_IsContiguous(&buf, 'C')) {
+        _PyArg_BadArgument("send", "argument 2", "contiguous buffer", args[1]);
         goto exit;
     }
     return_value = _multiprocessing_send_impl(module, handle, &buf);
@@ -148,4 +166,4 @@ _multiprocessing_sem_unlink(PyObject *module, PyObject *arg)
 #ifndef _MULTIPROCESSING_SEND_METHODDEF
     #define _MULTIPROCESSING_SEND_METHODDEF
 #endif /* !defined(_MULTIPROCESSING_SEND_METHODDEF) */
-/*[clinic end generated code: output=d3bbf69de578db7b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ab64ce752f933c55 input=a9049054013a1b77]*/
diff --git a/Modules/_multiprocessing/multiprocessing.c b/Modules/_multiprocessing/multiprocessing.c
index 0809c2455dbebc..ed89a1e29a433f 100644
--- a/Modules/_multiprocessing/multiprocessing.c
+++ b/Modules/_multiprocessing/multiprocessing.c
@@ -14,8 +14,16 @@ class HANDLE_converter(CConverter):
     type = "HANDLE"
     format_unit = '"F_HANDLE"'
 
+    def parse_arg(self, argname, displayname):
+        return """
+            {paramname} = PyLong_AsVoidPtr({argname});
+            if (!{paramname} && PyErr_Occurred()) {{{{
+                goto exit;
+            }}}}
+            """.format(argname=argname, paramname=self.parser_name)
+
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=9fad6080b79ace91]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=3e537d244034affb]*/
 
 /*[clinic input]
 module _multiprocessing

From f4591329487d94cbf694fb89ccbeb51e0d754cd4 Mon Sep 17 00:00:00 2001
From: Oleg Iarygin <oleg@arhadthedev.net>
Date: Sun, 3 Jul 2022 23:11:40 +0300
Subject: [PATCH 2/3] Add a NEWS entry

---
 .../next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst   | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst

diff --git a/Misc/NEWS.d/next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst b/Misc/NEWS.d/next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst
new file mode 100644
index 00000000000000..ec56953d1a118f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst
@@ -0,0 +1 @@
+Convert :mod:`multiprocessing` to use Argument Clinic.

From 4a8a05341cb8375a0c8985e9fbd2072ab4f34856 Mon Sep 17 00:00:00 2001
From: Oleg Iarygin <oleg@arhadthedev.net>
Date: Mon, 4 Jul 2022 15:16:16 +0300
Subject: [PATCH 3/3] Revert "Add a NEWS entry"

This reverts commit f4591329487d94cbf694fb89ccbeb51e0d754cd4.
---
 .../next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst   | 1 -
 1 file changed, 1 deletion(-)
 delete mode 100644 Misc/NEWS.d/next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst

diff --git a/Misc/NEWS.d/next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst b/Misc/NEWS.d/next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst
deleted file mode 100644
index ec56953d1a118f..00000000000000
--- a/Misc/NEWS.d/next/Library/2022-07-03-23-11-27.gh-issue-94512.x9nqmv.rst
+++ /dev/null
@@ -1 +0,0 @@
-Convert :mod:`multiprocessing` to use Argument Clinic.