1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index c97d161..9a7df28 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -844,6 +844,10 @@ class AST_Tests(unittest.TestCase):
         check_limit("a", "[0]")
         check_limit("a", "*a")
 
+    def test_null_bytes(self):
+        with self.assertRaises(SyntaxError,
+            msg="source code string cannot contain null bytes"):
+            ast.parse("a\0b")
 
 class ASTHelpers_Test(unittest.TestCase):
     maxDiff = None