1145996 - uBlock addon breaks the event pane

Status: RESOLVED DUPLICATE of bug 942899

(DevTools :: Debugger, defect)

Description

[Trevor Rowbotham [:rowbot]]

uBlock specifically triggers this for me, but it's possible that other addons could cause this too.  This may possibly be related to Bug 942899.

STR:
1) Install the uBlock addon (https://github.com/gorhill/uBlock/releases/tag/0.9.1.1)
2) Visit https://bugzilla.mozilla.org
3) Open the Debugger and click on the event pane

Actual results:
No events are shown and the debugger is paused.

Expected results:
Event pane should be populated with events.

Browser console shows the following:

_getDefinitionSite threw an exception: Error getting function definition site: server1.conn3.child1/pausedobj34 has no Debugger.Script DevToolsUtils.js:58:0

Handler function DebuggerClient.requester request callback threw an exception: TypeError: aResponse.source is undefined
Stack: EventListeners.prototype._getDefinitionSite/<@chrome://browser/content/devtools/debugger-controller.js:1817:7
DebuggerClient.requester/</<@resource://gre/modules/devtools/dbg-client.jsm:352:9
makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:82:14
emit@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/commonjs/sdk/event/core.js:104:9
Request.prototype.emit@resource://gre/modules/devtools/dbg-client.jsm:1188:29
DebuggerClient.prototype.onPacket@resource://gre/modules/devtools/dbg-client.jsm:1005:7
LocalDebuggerTransport.prototype.send/<@resource://gre/modules/devtools/dbg-client.jsm -> resource://gre/modules/devtools/transport/transport.js:561:11
makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:82:14
makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:82:14
Line: 1817, column: 6 DevToolsUtils.js:58:0

Comment 1

[Trevor Rowbotham [:rowbot]]

The URL in step 1 is no longer valid.  Instead, use [1] and install the latest stable release.

I have also filed a bug[2] with the add-on author.

[1] https://github.com/gorhill/uBlock/releases
[2] https://github.com/gorhill/uBlock/issues/244

Comment 3

[Sami Jaktholm]

I looked into this and this is definitely bug 942899 which regressed when bug 905700 was fixed in Firefox 36.

[1] https://hg.mozilla.org/mozilla-central/rev/ce5a390e46a9