diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/regress/regress-698028-3.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/regress/regress-698028-3.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,15 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+if (typeof Debugger === 'function') {
+    var g = newGlobal();
+    var dbg = new Debugger(g);
+    dbg.onDebuggerStatement = function (frame) { frame.eval(''); };
+    var s = '{ let ';
+    for (var i = 0; i < 128; i++)
+        s += 'x' + i + ', ';
+    s += 'X = 0; debugger; }';
+    g.eval(s);
+}
+
+reportCompare(0, 0, 'ok');