v8/test/mjsunit/regress/regress-1521.js

// Copyright 2011 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
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//       with the distribution.
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//
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// 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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//
// Flags: --allow-natives-syntax

// Optimized variable access inside through a catch context should work.
function test(x) {
  try {
    throw new Error();
  } catch (e) {
    var y = {f: 1};
    var f = function() {
      var z = y;
      var g = function() {
        if (y.f === z.f) return x;
      };
      ;
      %PrepareFunctionForOptimization(g);
      %OptimizeFunctionOnNextCall(g);
      return g;
    };
    assertEquals(3, f()());
  }
}

test(3);