668145 - Firefox 5 (also 4) on Mac crashes _every time_ any Command, Alt, or Ctrl + Key combination is pressed.

Status: RESOLVED INVALID

(Core :: Widget: Cocoa, defect)

Description

[patman]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:5.0) Gecko/20100101 Firefox/5.0
Build ID: 20110615151330

Steps to reproduce:

Pressed Command-A

-- this crash happens with any combination of Alt, Command, Ctrl and a regular key.


Actual results:

Firefox crashed


Expected results:

Select all or something like that.

Comment 1

[Matthias Versen [:Matti]]

PLease provide a crash id from about:crashes.
- https://developer.mozilla.org/en/How_to_get_a_stacktrace_for_a_bug_report

Comment 2

[patman]

bp-736d6f96-92c3-4254-b03a-305b12110628

I made the bug report out of a crash report, so i kind of assumed it would automatically be attached.. sorry.

Comment 3

[Steven Michaud [:smichaud] (Retired)]

Not surprisingly, I can't reproduce this.  (If everyone could crash so
easily, we'd already have hundreds of bug reports on this.)

So the question becomes:  What's different about your copy of Firefox
(and/or its configuration) that makes it possible for you to crash as
described in comment #0?

Here are a couple of things to do to help find out:

See if the problem still happen in Safe Mode:
http://support.mozilla.com/kb/Safe+Mode

See if the problem still happens with a clean profile:
http://support.mozilla.com/kb/Basic+Troubleshooting#w_8-make-a-new-profile

Comment 4

[patman]

I figured it out. It's not directly Firefox-related. I have a US-Keyboard, but I frequently need German Umlauts, so I made a custom Keyboard layout for those (stored as a bundle in "/Library/Keyboard\ Layouts"). However, OSX kept switching back to the standard US one randomly - this is sort of a known bug. I was able to prevent this by hiding the "/System/Library/Keyboard\ Layouts/AppleKeyboardLayouts.bundle" from OSX by simply renaming it. Never had a problem. Until Firefox 4. The application probably tries to open that system keyboard layout file for some reason and fails. Once I renamed that file back firefox stopped crashing.

Comment 5

[Steven Michaud [:smichaud] (Retired)]

Thanks for the information.  So this bug report is INVALID.

> Never had a problem. Until Firefox 4. The application probably tries
> to open that system keyboard layout file for some reason and fails.

Current Firefox code doesn't load the system keyboard layout file
explicitly (I just checked).  But quite likely it does so indirectly
(in a call to ::TISCreateInputSourceList()).

Comment 6

[Chris Lawson (gone)]

So there's not any way to protect against this? Obviously *something* is getting invalid data and crashing...

(patman: for future reference, you can add the crash ID when you first create a bug, but it's an easy field to overlook.)

Comment 7

[Steven Michaud [:smichaud] (Retired)]

All bets are off when you start messing with system files.  I don't see any point in trying to "protect against" this kind of thing.

Comment 8

[Steven Michaud [:smichaud] (Retired)]

> Obviously *something* is getting invalid data and crashing.

The crash happens in system code.

Comment 9

[Chris Lawson (gone)]

Ah, then there isn't really anything we can do, is there?

Comment 10

[Steven Michaud [:smichaud] (Retired)]

No doubt there's something we *could* do.  I just don't think we *should* do anything :-)