Merge with ongoing work in 3.5 branch.

2 files changed, 17 insertions, 0 deletions

diff --git a/Lib/test/test_dict.py b/Lib/test/test_dict.py
index 9553c66d14..2488b63474 100644
--- a/Lib/test/test_dict.py
+++ b/Lib/test/test_dict.py
@@ -937,6 +937,20 @@ class DictTest(unittest.TestCase):
                 d.popitem()
         self.check_reentrant_insertion(mutate)
 
+    def test_merge_and_mutate(self):
+        class X:
+            def __hash__(self):
+                return 0
+
+            def __eq__(self, o):
+                other.clear()
+                return False
+
+        l = [(i,0) for i in range(1, 1337)]
+        other = dict(l)
+        other[X()] = 0
+        d = {X(): 0, 1: 1}
+        self.assertRaises(RuntimeError, d.update, other)
 
 from test import mapping_tests
 
diff --git a/Lib/test/test_unpack_ex.py b/Lib/test/test_unpack_ex.py
index 01f57b95e7..d27eef0397 100644
--- a/Lib/test/test_unpack_ex.py
+++ b/Lib/test/test_unpack_ex.py
@@ -128,6 +128,9 @@ Dict display element unpacking
     ...                          for i in range(1000)) + "}"))
     1000
 
+    >>> {0:1, **{0:2}, 0:3, 0:4}
+    {0: 4}
+
 List comprehension element unpacking
 
     >>> a, b, c = [0, 1, 2], 3, 4