species-fuse-sharedarraybuffer-2.js

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// Test for shared array buffer species fuse with multiple realms.

function test() {

  var g = newGlobal();

  var arr = g.evaluate(`new SharedArrayBuffer(4)`);

  var count = 0;

  Object.defineProperty(g.SharedArrayBuffer.prototype, "constructor", {get: function() {

    count++;

    return SharedArrayBuffer;

  }});

  for (var i = 0; i < 20; i++) {

    assertEq(SharedArrayBuffer.prototype.slice.call(arr).byteLength, 4);

  assertEq(count, 20);

  assertEq(getFuseState().OptimizeSharedArrayBufferSpeciesFuse.intact, true);

  assertEq(g.getFuseState().OptimizeSharedArrayBufferSpeciesFuse.intact, false);

test();