1 files changed, 25 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/regress/regress-v8-10513.js b/deps/v8/test/mjsunit/regress/regress-v8-10513.js
new file mode 100644
index 00000000000..e9b91f5b4d6
--- /dev/null
+++ b/deps/v8/test/mjsunit/regress/regress-v8-10513.js
@@ -0,0 +1,25 @@
+// Copyright 2020 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.
+
+const access_log = [];
+const handler = {
+  get: function(obj, prop) {
+    access_log.push(prop);
+    return prop in obj ? obj[prop] : "z";
+  }
+};
+
+class ProxiedGroupRegExp extends RegExp {
+  exec(s) {
+    var result = super.exec(s);
+    if (result) {
+      result.groups = new Proxy(result.groups, handler);
+    }
+    return result;
+  }
+}
+
+let re = new ProxiedGroupRegExp("(?<x>.)");
+assertEquals("a z", "a".replace(re, "$<x> $<y>"));
+assertEquals(["x", "y"], access_log);