Omit frames up to new target in Error constructor

test/mjsunit/regress/regress-5216.js

Index: test/mjsunit/regress/regress-5216.js
diff --git a/test/mjsunit/harmony/regexp-change-exec.js b/test/mjsunit/regress/regress-5216.js
similarity index 60%
copy from test/mjsunit/harmony/regexp-change-exec.js
copy to test/mjsunit/regress/regress-5216.js
index ff84506d894ba9a4cb6e9b3127812a9e74642f93..9097310fc2ce20542e7d979cb7612576327d94e4 100644
--- a/test/mjsunit/harmony/regexp-change-exec.js
+++ b/test/mjsunit/regress/regress-5216.js
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// Ensure that custom error constructors don't show up in stack traces.
+
 class MyError extends Error { }
-RegExp.prototype.exec = () => { throw new MyError() };
-assertThrows(() => "foo".match(/bar/), MyError);
+assertFalse(new MyError().stack.includes("at MyError"));