tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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bug1651732-ionic-getprop-super.js (467B)

      1 class Base {
      2  static a = 0;
      3  static [Symbol.iterator] = 0;
      4 }
      5 
      6 class Derived extends Base {
      7  static m(key) {
      8    // Attach an IC through IonGetPropSuperIC.
      9    return super[key];
     10  }
     11 }
     12 
     13 var key = {
     14  value: "a",
     15 
     16  [Symbol.toPrimitive]() {
     17    return this.value;
     18  }
     19 };
     20 
     21 for (var i = 0; i < 100; ++i) {
     22  // Change key[Symbol.toPrimitive] to return a symbol after some warm-up.
     23  if (i > 80) {
     24    key.value = Symbol.iterator;
     25  }
     26 
     27  assertEq(Derived.m(key), 0);
     28 }