1 // Copyright 2015 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Flags: --expose-debug-as debug --allow-natives-syntax 6 7 // Test that live-editing a frame to introduce new.target fails. 8 9 Debug = debug.Debug 10 var calls = 0; 11 var exceptions = 0; 12 var results = []; 13 var replace_again; 14 15 eval(` 16 function LogNewTarget() { 17 calls++; 18 ReplaceOnce(); 19 results.push(true); 20 } 21 `); 22 23 function Replace(fun, original, patch) { 24 %ExecuteInDebugContext(function() { 25 var change_log = []; 26 try { 27 var script = Debug.findScript(fun); 28 var patch_pos = script.source.indexOf(original); 29 Debug.LiveEdit.TestApi.ApplySingleChunkPatch( 30 script, patch_pos, original.length, patch, change_log); 31 } catch (e) { 32 assertEquals("BLOCKED_NO_NEW_TARGET_ON_RESTART", 33 change_log[0].functions_on_stack[0].replace_problem); 34 assertInstanceof(e, Debug.LiveEdit.Failure); 35 exceptions++; 36 } 37 }); 38 } 39 40 function ReplaceOnce(x) { 41 if (replace_again) { 42 replace_again = false; 43 Replace(LogNewTarget, "true", "new.target"); 44 } 45 } 46 47 function Revert() { 48 Replace(LogNewTarget, "new.target", "true"); 49 } 50 51 replace_again = true; 52 ReplaceOnce(); 53 new LogNewTarget(); 54 Revert(); 55 assertEquals(1, calls); 56 assertEquals(0, exceptions); 57 assertEquals([LogNewTarget], results); 58 59 replace_again = true; 60 new LogNewTarget(); 61 assertEquals(2, calls); // No restarts 62 assertEquals(1, exceptions); // Replace failed. 63 assertEquals([LogNewTarget, true], results); 64
