Issue #7788: Fix a crash produced by deleting a list slice with huge

step value.  Patch by Marcin Bachry.

3 files changed, 7 insertions, 1 deletions

diff --git a/Lib/test/list_tests.py b/Lib/test/list_tests.py
index c9aa316..8dd6de6 100644
--- a/Lib/test/list_tests.py
+++ b/Lib/test/list_tests.py
@@ -519,6 +519,9 @@ class CommonTest(seq_tests.CommonTest):
         a = self.type2test(range(10))
         a[::2] = tuple(range(5))
         self.assertEqual(a, self.type2test([0, 1, 1, 3, 2, 5, 3, 7, 4, 9]))
+        # test issue7788
+        a = self.type2test(range(10))
+        del a[9::1<<333]
 
     def test_constructor_exception_handling(self):
         # Bug #1242657
diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index dfd0fa4..9b289ab 100755
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -882,6 +882,9 @@ class NumberTest(BaseTest):
         a = array.array(self.typecode, range(10))
         del a[::1000]
         self.assertEqual(a, array.array(self.typecode, [1,2,3,4,5,6,7,8,9]))
+        # test issue7788
+        a = array.array(self.typecode, range(10))
+        del a[9::1<<333]
 
     def test_assignment(self):
         a = array.array(self.typecode, range(10))
diff --git a/Lib/test/test_bytes.py b/Lib/test/test_bytes.py
index aab51da..70cab1c 100644
--- a/Lib/test/test_bytes.py
+++ b/Lib/test/test_bytes.py
@@ -565,7 +565,7 @@ class ByteArrayTest(BaseBytesTest):
         self.assertEqual(b, bytearray([0, 1, 2, 42, 42, 42, 3, 4, 5, 6, 7, 8, 9]))
 
     def test_extended_set_del_slice(self):
-        indices = (0, None, 1, 3, 19, 300, -1, -2, -31, -300)
+        indices = (0, None, 1, 3, 19, 300, 1<<333, -1, -2, -31, -300)
         for start in indices:
             for stop in indices:
                 # Skip invalid step 0