commit af65872da2b679e4b1876412aab6a731f82a469f
author Serhiy Storchaka <storchaka@gmail.com> Sun Jul 03 14:41:36 2016 +0300
committer Serhiy Storchaka <storchaka@gmail.com> Sun Jul 03 14:41:36 2016 +0300
tree 24ae9a673e5203c75b0ac4fc5dd4bfb7acb8fb01
parent 8faca61fec8ef004feb534dee3da052f3bed82ce

Issue #27443: __length_hint__() of bytearray itearator no longer return
negative integer for resized bytearray.

Objects/bytearrayobject.c

diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 277be59..388e990 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -3192,8 +3192,12 @@
 bytearrayiter_length_hint(bytesiterobject *it)
 {
     Py_ssize_t len = 0;
-    if (it->it_seq)
+    if (it->it_seq) {
         len = PyByteArray_GET_SIZE(it->it_seq) - it->it_index;
+        if (len < 0) {
+            len = 0;
+        }
+    }
     return PyLong_FromSsize_t(len);
 }