src/third_party/mozjs-45/js/src/jit-test/tests/basic/bug770952.js

// |jit-test| error: TypeError
load(libdir + "iteration.js");

eval("var x; typeof x")
Array.prototype[Symbol.iterator] = function () { for(y in x); };
for (var v of ['a', 'b', 'c', 'd'])
    s = v;