/js/src/jit-test/tests/basic/bug647695.js

 1try { let(x = XMLList(7), y = let(a = x)("")) {} } catch (e) {}
 2
 3try {
 4with({
 5    y: Float64Array
 6})
 7for each(let y in [y]) {}
 8} catch (e) {}
 9
10try { test(); } catch (e) {}
11function test() {
12    try {
13        var result, arguments = 'adddb', arguments;
14    } catch (ex) {}
15}