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function has(k) {
// Different typed array types to ensure we emit a HasProp IC.
var xs = [
new Int32Array(10),
new Int16Array(10),
];
// Doesn't read values from the prototype chain.
Object.prototype[k] = 1;
for (var i = 0; i < 100; ++i) {
var x = xs[i & 1];
assertEq(k in x, false);
}
}
// Make sure we use a distinct function for each test.
function test(fn) {
return Function(`return ${fn};`)();
}
// Negative numbers values aren't int32 indices.
test(has)(-1);
test(has)(-2147483648);
test(has)(-2147483649);
// Int32 indices must be less-or-equal to max-int32.
test(has)(2147483648);
// Int32 indices must not have fractional parts.
test(has)(1.5);
test(has)(-1.5);
// Non-finite numbers aren't int32 indices.
test(has)(NaN);
test(has)(-Infinity);
test(has)(Infinity);
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