bug-2061300.js - mozsearch

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gczeal(0);

const NT = 300;

const gF = newGlobal({newCompartment: true});

const gC = newGlobal({newCompartment: true});

const gW = newGlobal({newCompartment: true});

const gD = newGlobal({newCompartment: true});

gC.evaluate(`

  var pairs = [];

  for (let i = 0; i < 300; i++) pairs.push(transplantableObject());

  var extras = [];

  for (let i = 0; i < 3000; i++) extras.push({e: i});

`);

gW.evaluate(`

  var arr = [];

  function take(o) { arr.push(o); }

  function dropAll() { arr.length = 0; }

  function groom(n) {

    var pat = String.fromCharCode(0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0xFE, 0xFF);

    var s23 = (pat + pat + pat).substring(0, 23);

    var s15 = (pat + pat).substring(0, 15);

    var opts = { tenured: true };

    var keepStr = new Array(2 * n);

    for (var i = 0; i < n; i++) {

      keepStr[2 * i] = newString(s23, opts);

      keepStr[2 * i + 1] = newString(s15, opts);

    return keepStr;

`);

for (let i = 0; i < 300; i++) gW.take(gC.extras[i]);

for (let i = 0; i < NT; i++) gW.take(gC.pairs[i].object);

for (let i = 300; i < 3000; i++) gW.take(gC.extras[i]);

gW.dropAll();

gF.evaluate(`

  var keep = [];

  for (let i = 0; i < 30000; i++) { let o = {i: i}; keep.push(o); new WeakRef(o); }

`);

minorgc();

schedulezone(gF);

schedulezone(gW);

startgc(1);

let transplanted = 0, slice = 0;

while (gcstate() !== "NotActive" && slice < 30000) {

  gcslice(3000, { dontStart: true });

  slice++;

  let st = gcstate();

  if ((st === "Mark" || st === "Sweep") && transplanted < NT) {

    for (let k = 0; k < 8 && transplanted < NT; k++) {

      gC.pairs[transplanted].transplant(gD);

      transplanted++;

gcparam("maxBytes", gcparam("maxBytes"));

gW.groomKeep = gW.groom(60000);

minorgc();