deps: patch V8 to 6.4.388.44

PR-URL: https://github.com/nodejs/node/pull/18687
Refs: https://github.com/v8/v8/compare/6.4.388.42...6.4.388.44
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/deps/v8/test/mjsunit/regress/regress-crbug-806388.js b/deps/v8/test/mjsunit/regress/regress-crbug-806388.js
new file mode 100644
index 0000000000..b55b50107e
--- /dev/null
+++ b/deps/v8/test/mjsunit/regress/regress-crbug-806388.js
@@ -0,0 +1,20 @@
+// Copyright 2018 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 --enable-slow-asserts --expose-gc
+
+class Derived extends Array {
+    constructor(a) {
+      // Syntax Error.
+      const a = 1;
+    }
+}
+
+// Derived is not a subclass of RegExp
+let o = Reflect.construct(RegExp, [], Derived);
+o.lastIndex = 0x1234;
+%HeapObjectVerify(o);
+
+gc();
+%HeapObjectVerify(o);