From b4a46cb428428ac4fe6fc18257459d8a460ebd9d Mon Sep 17 00:00:00 2001
From: Antoine Pitrou <solipsis@pitrou.net>
Date: Fri, 20 Sep 2013 22:19:22 +0200
Subject: [PATCH] Add a comment making it explicit that itertools.tee() is
 already 64bit-safe (issue #19049)

---
 Modules/itertoolsmodule.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Modules/itertoolsmodule.c b/Modules/itertoolsmodule.c
index 01231816123..8be62ce94c0 100644
--- a/Modules/itertoolsmodule.c
+++ b/Modules/itertoolsmodule.c
@@ -401,7 +401,7 @@ static PyTypeObject _grouper_type = {
 typedef struct {
     PyObject_HEAD
     PyObject *it;
-    int numread;
+    int numread;  /* 0 <= numread <= LINKCELLS */
     PyObject *nextlink;
     PyObject *(values[LINKCELLS]);
 } teedataobject;
@@ -409,7 +409,7 @@ typedef struct {
 typedef struct {
     PyObject_HEAD
     teedataobject *dataobj;
-    int index;
+    int index;    /* 0 <= index <= LINKCELLS */
     PyObject *weakreflist;
 } teeobject;