src/v8/test/mjsunit/array-non-smi-length.js

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// Flags: --allow-natives-syntax

function TestNonSmiArrayLength() {
  function f(a) {
    return a.length+1;
  }

  %PrepareFunctionForOptimization(f);

  var a = [];
  a.length = 0xFFFF;
  assertSame(0x10000, f(a));
  assertSame(0x10000, f(a));

  %OptimizeFunctionOnNextCall(f);
  a.length = 0xFFFFFFFF;
  assertSame(0x100000000, f(a));
}

TestNonSmiArrayLength();