From: WildCard65 <WildCard65@users.noreply.github.com>
Date: Tue, 23 Jun 2020 13:21:16 +0000 (-0400)
Subject: bpo-41085: Fix array.array.index() on 64-bit Windows (GH-21071)
X-Git-Tag: v3.10.0a1~548
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1d3dad5f96ed445b958ec53dfa0d46812f2162d9;p=thirdparty%2FPython%2Fcpython.git

bpo-41085: Fix array.array.index() on 64-bit Windows (GH-21071)

Fix integer overflow in the :meth:`array.array.index` method on 64-bit Windows
for index larger than ``2**31``.
---

diff --git a/Misc/NEWS.d/next/Tests/2020-06-23-12-02-45.bpo-41085.JZKsyz.rst b/Misc/NEWS.d/next/Tests/2020-06-23-12-02-45.bpo-41085.JZKsyz.rst
new file mode 100644
index 000000000000..463dffdd653e
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2020-06-23-12-02-45.bpo-41085.JZKsyz.rst
@@ -0,0 +1,2 @@
+Fix integer overflow in the :meth:`array.array.index` method on 64-bit Windows
+for index larger than ``2**31``.
diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index 8f12c6164633..2d498c7e8294 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -1130,7 +1130,7 @@ array_array_index(arrayobject *self, PyObject *v)
         cmp = PyObject_RichCompareBool(selfi, v, Py_EQ);
         Py_DECREF(selfi);
         if (cmp > 0) {
-            return PyLong_FromLong((long)i);
+            return PyLong_FromSsize_t(i);
         }
         else if (cmp < 0)
             return NULL;