js/src/jit-test/tests/ion/bug792944.js


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function whoo() {
    (new Object()).foo()
}
Object.prototype.foo = function() { return undefined };
whoo();
Object.prototype.foo = undefined;
gc();
try {
    whoo();
    assertEq(0, 1);
} catch(e) {
    assertEq(e instanceof TypeError, true);
}