[pypy-commit] pypy py3.5: fix pickling reversed(list)

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: py3.5
Changeset: r89023:fc7ceff2ed1f
Date: 2016-12-12 15:03 +0100
http://bitbucket.org/pypy/pypy/changeset/fc7ceff2ed1f/

Log:	fix pickling reversed(list)

diff --git a/pypy/objspace/std/iterobject.py b/pypy/objspace/std/iterobject.py
--- a/pypy/objspace/std/iterobject.py
+++ b/pypy/objspace/std/iterobject.py
@@ -164,7 +164,6 @@
         index = space.int_w(w_state)
         if self.w_seq is not None:
             length = space.int_w(space.len(self.w_seq))
-            if index < 0: index = 0
             if index >= length: index = length-1
             self.index = index
 
diff --git a/pypy/objspace/std/test/test_iterobject.py b/pypy/objspace/std/test/test_iterobject.py
--- a/pypy/objspace/std/test/test_iterobject.py
+++ b/pypy/objspace/std/test/test_iterobject.py
@@ -82,6 +82,17 @@
         assert next(iterable) == 1
         iterable.__setstate__(3)
         assert next(iterable) == 4
+        iterable.__setstate__(-1)
+        raises(StopIteration, next, iterable)
+        #
+        iterable = reversed([1,2,3,4])
+        iterable.__setstate__(-100)
+        raises(StopIteration, next, iterable)
+        #
+        iterable = reversed([1,2,3,4])
+        iterable.__setstate__(100)
+        assert next(iterable) == 4
+        assert next(iterable) == 3
 
     def test_forward_iter_reduce(self):
         T = "abc"