1 files changed, 15 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/regress-963346.js b/deps/v8/test/mjsunit/regress-963346.js
new file mode 100644
index 0000000000..8f29556210
--- /dev/null
+++ b/deps/v8/test/mjsunit/regress-963346.js
@@ -0,0 +1,15 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+var o = ['3'];
+function foo(i) { o.x = i; }
+foo("string");
+Object.preventExtensions(o);
+Object.seal(o);
+print('foo');
+foo(0);
+%HeapObjectVerify(o);
+assertEquals(o.x, 0);