function f(obj) { | |
return typeof obj[15]; | |
} | |
function test() { | |
var a = [1, 2]; | |
a.__proto__ = {15: 1337}; | |
var b = [1, 2, 3, 4]; | |
for (var i = 0; i < 1000; i++) { | |
var r = f(i % 2 ? a : b); | |
assertEq(r, i % 2 ? "number" : "undefined"); | |
} | |
} | |
test(); | |
test(); | |
test(); |