Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 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); |