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Edit File: big-array-literal.js

// Copyright 2009 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
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//       from this software without specific prior written permission.
//
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// On MacOS, this test needs a stack size of at least 538 kBytes.
// Flags: --stack-size=600

// Test that we can make large object literals that work.
// Also test that we can attempt to make even larger object literals without
// crashing.
function testLiteral(size, array_in_middle) {
  print(size);

var f;

// Build object-literal string.
  var literal = "function f() { return ";

for (var i = 0; i < size; i++) {
    literal += "[";
  }

literal += array_in_middle ? " [42.2]" : "{a:42.2}";

for (var i = 0; i < size; i++) {
    literal += "]";
  }

literal += "; }";

// Create the object literal.
  eval(literal);

var x = f();

// Check that the properties have the expected values.
  for (var i = 0; i < size; i++) {
    x = x[0];
  }

if (array_in_middle) {
    assertEquals(42.2, x[0]), "x array in middle";
    x[0] = 41.2;
  } else {
    assertEquals(42.2, x.a, "x object in middle");
    x.a = 41.2;
  }

var y = f();
  for (var i = 0; i < size; i++) {
    y = y[0];
  }

if (array_in_middle) {
    assertEquals(42.2, y[0], "y array in middle");
    y[0] = 41.2;
  } else {
    assertEquals(42.2, y.a, "y object in middle");
    y.a = 41.2;
  }
}

// The sizes to test.
var sizes = [1, 2, 100, 200, 300];

// Run the test.
for (var i = 0; i < sizes.length; i++) {
  testLiteral(sizes[i], false);
  testLiteral(sizes[i], true);
}

function testLiteralAndCatch(size) {
  var big_enough = false;
  try {
    testLiteral(size, false);
  } catch (e) {
    big_enough = true;
  }
  try {
    testLiteral(size, true);
  } catch (e) {
    big_enough = true;
  }
  return big_enough;
}

// Catch stack overflows.

testLiteralAndCatch(1000) ||
testLiteralAndCatch(20000) ||
testLiteralAndCatch(200000);

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