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// Replacing Array.prototype.iterator with something non-callable makes for-of throw.
load(libdir + "asserts.js");
load(libdir + "iteration.js");
function test(v) {
Array.prototype[Symbol.iterator] = v;
assertThrowsInstanceOf(function () { for (var x of []) ; }, TypeError);
}
test(undefined);
test(null);
test({});
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