Bug 57294 – Crash when closing "Add Bookmark" Dialog using the Enter Key

• Component: WebCore Misc.
• Status: RESOLVED FIXED

[Brian Weinstein]

If a WebView is set to close using the Enter Key (if it was a dialog that closes when you press enter), it can crash when closed this way.

The FrameView isn't protected in EventHandler::keyEvent, like it is in EventHandler::handleMousePressEvent, EventHandler::handleMouseDoubleClickEvent, EventHandler::handleMouseMoveEvent, EventHandler::handleMouseReleaseEvent, and EventHandler::handleWheelEvent.

<rdar://problem/9044756>

[Brian Weinstein]

Created attachment 87249 [details]
[PATCH] Fix

[Darin Adler]

Comment on attachment 87249 [details]
[PATCH] Fix

It’s not at all clear why we protect the FrameView and not some other reference-counted object.

[Brian Weinstein]

(In reply to comment #2)
> (From update of attachment 87249 [details])
> It’s not at all clear why we protect the FrameView and not some other reference-counted object.

I'm not sure either. I was going by existing style w/ other functions in the class + it fixed the crash. I can talk to someone about it later tonight or in the morning before landing.

[Adam Roben (:aroben)]

Comment on attachment 87249 [details]
[PATCH] Fix

Is it possible to make a test for this? If not a test for run-webkit-tests, then maybe one for run-api-tests?

[Brian Weinstein]

(In reply to comment #4)
> (From update of attachment 87249 [details])
> Is it possible to make a test for this? If not a test for run-webkit-tests, then maybe one for run-api-tests?

I tried making a test that opens a window using window.open, and that window is closed by any key-press, but that didn't reproduce the crash.

[Alexey Proskuryakov]

> I tried making a test that opens a window using window.open, and that window is closed by any key-press, but that didn't reproduce the crash.

Not sure if it's worth spending more time on this, but the inability to make a test suggests that there is some general difference between normal web views and those the problem was observed with, and that difference would be good to find and eliminate.

[Brian Weinstein]

Adding some additional steps to reproduce:

1) Go to any page (http://reddit.com - was used for testing).
2) Click the + button in the URL field, to add a bookmark
3) Press Enter to close the "Add Bookmark" Dialog

[Brian Weinstein]

Landed in r82487.