1 // Copyright 2008 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 // Regression test cases for issue 1178598. 29 30 // Make sure const-initialization doesn't conflict 31 // with heap-allocated locals for catch variables. 32 var value = (function(){ 33 try { } catch(e) { 34 // Force the 'e' variable to be heap-allocated 35 // by capturing it in a function closure. 36 (function() { e; }); 37 } 38 // Make sure the two definitions of 'e' do 39 // not conflict in any way. 40 eval("const e=1"); 41 return e; 42 })(); 43 44 assertEquals(1, value); 45 46 47 48 // Make sure that catch variables can be accessed using eval. 49 var value = (function() { 50 var result; 51 try { 52 throw 42; 53 } catch (e) { 54 result = eval("e"); 55 } 56 return result; 57 })(); 58 59 assertEquals(42, value); 60 61 62 63 // Make sure that heap-allocated locals for catch variables aren't 64 // visible outside the catch scope and that they are visible from 65 // within. 66 var value = (function() { 67 var result; 68 try { 69 throw 87; 70 } catch(e) { 71 // Force the 'e' variable to be heap-allocated 72 // by capturing it in a function closure. 73 (function() { e; }); 74 result = eval("e"); 75 } 76 77 // Expect accessing 'e' to yield an exception because 78 // it is not defined in the current scope. 79 try { 80 eval("e"); 81 assertTrue(false); // should throw exception 82 } catch(exception) { 83 assertTrue(exception instanceof ReferenceError); 84 return result; 85 } 86 })(); 87 88 assertEquals(87, value); 89 90 91