v8/test/mjsunit/regress/regress-2170.js

// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// 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.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Flags: --allow-natives-syntax

function array_fun() {
  for (var i = 0; i < 2; i++) {
    var a = [1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8];
    var x = new Array();
    x.fixed$length = true;
    for (var j = 0; j < a.length; j++) {
      x.push(a[j]);
    }
    for (var j = 0; j < x.length; j++) {
      if (typeof x[j] != 'number') {
        throw "foo";
      }
      x[j] = x[j];
    }
  }
};
%PrepareFunctionForOptimization(array_fun);
try {
  for (var i = 0; i < 10; ++i) {
    array_fun();
  }
  %OptimizeFunctionOnNextCall(array_fun);
  for (var i = 0; i < 10; ++i) {
    array_fun();
  }
} catch (e) {
  assertUnreachable();
}