xref: /external/chromium_org/v8/test/mjsunit/regress/regress-2596.js

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// Flags: --allow-natives-syntax

var bytes = new Uint8Array([
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f]);  // kHoleNaN
var doubles = new Float64Array(bytes.buffer);
assertTrue(isNaN(doubles[0]));

var prototype = [2.5, 2.5];
var array = [3.5, 3.5];
array.__proto__ = prototype;
assertTrue(%HasFastDoubleElements(array));

function boom(index) {
  array[index] = doubles[0];
  return array[index];
}

assertTrue(isNaN(boom(0)));
assertTrue(isNaN(boom(0)));
assertTrue(isNaN(boom(0)));

// Test hydrogen
%OptimizeFunctionOnNextCall(boom);
assertTrue(isNaN(boom(0)));
assertTrue(isNaN(boom(0)));
assertTrue(isNaN(boom(0)));