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      1 // Copyright 2013 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 // Flags: --expose-debug-as debug
     29 // Flags: --turbo-deoptimization
     30 
     31 Debug = debug.Debug
     32 
     33 var error = null;
     34 var array = ["a", "b", "c"];
     35 
     36 function listener(event, exec_state, event_data, data) {
     37   try {
     38     if (event == Debug.DebugEvent.Break) {
     39       assertArrayEquals(array,
     40                         exec_state.frame(0).evaluate('arguments').value());
     41     }
     42   } catch (e) {
     43     error = e;
     44   }
     45 };
     46 
     47 Debug.setListener(listener);
     48 
     49 
     50 function f(a, b) {
     51   arguments;
     52   debugger;  // Arguments object is already materialized.
     53 }
     54 
     55 f.apply(this, array);
     56 f("a", "b", "c");
     57 assertNull(error);
     58 
     59 function g(a, b) {
     60   debugger;  // Arguments object is not yet materialized.
     61 }
     62 g.apply(this, array);
     63 g("a", "b", "c");
     64 assertNull(error);
     65