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// Ensure the HadGetterSetterChange flag is set.
Object.defineProperty(Array, "foo", {configurable: true, get: function() {}});
Object.defineProperty(Array, "foo", {configurable: true, get: function() {}});
// Initialize ArraySpeciesLookup.
let a = [1, 2, 3];
for (let i = 0; i < 5; i++) {
assertEq(a.slice().length, 3);
}
// Redefine the Array[Symbol.species] getter without changing its attributes/shape.
let count = 0;
Object.defineProperty(Array, Symbol.species,
{get: function() { count++; }, enumerable: false, configurable: true});
// Ensure ArraySpeciesLookup now deoptimizes and calls the getter.
for (let i = 0; i < 5; i++) {
assertEq(a.slice().length, 3);
}
assertEq(count, 5);
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