species-redefine-getter.js

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// Ensure the HadGetterSetterChange flag is set.

Object.defineProperty(Promise, "foo", {configurable: true, get: function() {}});

Object.defineProperty(Promise, "foo", {configurable: true, get: function() {}});

// Initialize PromiseLookup.

var p = new Promise(() => {});

for (let i = 0; i < 5; i++) {

    Promise.all([p]);

// Redefine the Promise[Symbol.species] getter without changing its attributes/shape.

let count = 0;

Object.defineProperty(Promise, Symbol.species,

                      {get: function() { count++; }, enumerable: false, configurable: true});

// Ensure PromiseLookup now deoptimizes and calls the getter.

for (let i = 0; i < 5; i++) {

    Promise.all([p]);

assertEq(count, 5);