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var arr = [Math, Math, Math, Math, {}];
var obj = {};
var x;
var result = 'no error';
try {
for (var i = 0; i < arr.length; i++)
x = (obj instanceof arr[i]); // last iteration throws, triggering deep bail
} catch (exc) {
result = exc.constructor.name;
}
assertEq(result, 'TypeError');