From 65a3144e541462821233402561b91e4d6bfe7799 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Tue, 1 Jul 2014 16:45:52 +0200
Subject: [PATCH] Closes #21780: make the unicodedata module "ssize_t clean"
 for parsing parameters

---
 Modules/unicodedata.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Modules/unicodedata.c b/Modules/unicodedata.c
index 3253db21f1b..3979f65738d 100644
--- a/Modules/unicodedata.c
+++ b/Modules/unicodedata.c
@@ -13,6 +13,8 @@
 
    ------------------------------------------------------------------------ */
 
+#define PY_SSIZE_T_CLEAN
+
 #include "Python.h"
 #include "ucnhash.h"
 #include "structmember.h"
@@ -1271,12 +1273,16 @@ unicodedata_lookup(PyObject* self, PyObject* args)
     Py_UCS4 code;
 
     char* name;
-    int namelen;
+    Py_ssize_t namelen;
     unsigned int index;
     if (!PyArg_ParseTuple(args, "s#:lookup", &name, &namelen))
         return NULL;
+    if (namelen > INT_MAX) {
+        PyErr_SetString(PyExc_KeyError, "name too long");
+        return NULL;
+    }
 
-    if (!_getcode(self, name, namelen, &code, 1)) {
+    if (!_getcode(self, name, (int)namelen, &code, 1)) {
         PyErr_Format(PyExc_KeyError, "undefined character name '%s'", name);
         return NULL;
     }