diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/regress/regress-699682.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/regress/regress-699682.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,29 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+// Don't assert trying to parse any of these.
+var a = ["({''})",
+         "({''} = {})",
+         "var {''};",
+         "var {'', a} = {a: 0};",
+         "var {'bad'};",
+         "({'bad'} = {bad: 0});",
+         "var {'if'};",
+         "function f({''}) {}",
+         "function f({a, 'bad', c}) {}"];
+
+var x;
+for (var i = 0; i < a.length; i++) {
+    x = undefined;
+    try {
+        eval(a[i]);
+    } catch (exc) {
+        x = exc;
+    }
+    assertEq(x instanceof SyntaxError, true);
+}
+assertEq("" in this, false);
+assertEq("bad" in this, false);
+assertEq("if" in this, false);
+
+reportCompare(0, 0, 'ok');