1352089 - Error occurred while processing 'resume: TypeError: can't access dead object

Status: RESOLVED FIXED

(DevTools :: Debugger, defect)

Description

[tom.mai78101]

Attachment: jsExtension.zip - Contains the code necessary to execute the problematic issue.

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Steps to reproduce:

I'm using Firefox Developers Edition, on the Aurora update branch, version 54.0a2 (2017-03-30) (64-bit). It is the latest version thus far, according to the About dialog box.

http://i.imgur.com/fXDryAw.png

The new Debugger UI is enabled by default:

http://i.imgur.com/oOHpWYp.png

1. Open the following attachment and place it somewhere where you're able to load the extension into the browser.
2. Debug the extension. The DevTool window should pop-up.
3. In the DevTool, click on the Debugger tab.
4. Double-click on the popup.js to bring up the code.
5. Set a breakpoint on Line 3.
6. In the browser, open the add-on, and click on the "Test Submit" button.
7. The DevTool should pause at the breakpoint. Either press F10 or the "Step Over" icon to let it run one line of code.
8. The whole DevTool window and the browser will completely be unresponsive until you close the DevTool window.


GIF for reproduction steps: http://i.imgur.com/Eac24SI.gif


Actual results:

Error stack trace is shown in the Console tab:



error occurred while processing 'resume: TypeError: can't access dead object
Stack: createNonSourceMappedActor@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/utils/TabSources.js:298:1
getFrameLocation@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/utils/TabSources.js:578:7
_handleResumeLimit@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/script.js:903:31
onResume@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/script.js:1007:28
onPacket@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/main.js:1769:15
_onJSONObjectReady/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/shared/transport/transport.js:483:11
exports.makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/shared/ThreadSafeDevToolsUtils.js:101:14
exports.makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/shared/ThreadSafeDevToolsUtils.js:101:14
enter@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/script.js:350:5
_pushThreadPause@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/script.js:533:5
_pauseAndRespond@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/script.js:741:7
hit@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/breakpoint.js:175:12
@moz-extension://efb7b1b2-2991-4a92-9d3b-02d90f272635/popup.js:3:3
EventListener.handleEvent*@moz-extension://efb7b1b2-2991-4a92-9d3b-02d90f272635/popup.js:1:1
Line: 298, column: 1


Expected results:

Code should run normally. No unresponsiveness should occur.

Comment 1

[tom.mai78101]

Line 101 in test.js has a console.log() set with a breakpoint. Just doing a step into, step over, or step out will cause the following call stack trace (after expanding the error message in the Console tab):

_unknownError                            resource://devtools/server/main.js:1632:5
onPacket                                 resource://devtools/server/main.js:1771:29
_onJSONObjectReady/<                     resource://devtools/shared/transport/transport.js:483:11
exports.makeInfallible/<                 resource://devtools/shared/ThreadSafeDevToolsUtils.js:101:14
exports.makeInfallible/<                 resource://devtools/shared/ThreadSafeDevToolsUtils.js:101:14
enter                                    resource://devtools/server/actors/script.js:350:5
bound enter                              self-hosted:911:17
_pushThreadPause                         resource://devtools/server/actors/script.js:533:5
_pauseAndRespond                         resource://devtools/server/actors/script.js:741:7
hit                                      resource://devtools/server/actors/breakpoint.js:175:12
<anonymous>                              moz-extension://23cf7ede-9c8b-4bd7-b0b1-c0505abcd4de/content_scripts/test.js:101:1


This test.js is more of me adding the following code:

https://hastebin.com/pilefuvusi.js

Comment 2

[Jason Laster [:jlast]]

closing as i believe this has been fixed