403597 - ASSERTION: Nothing to handle this event!

Status: RESOLVED WORKSFORME

(Core :: Layout, defect)

Description

[Martijn Wargers (dead)]

Attachment: testcase

See testcase, when hovering over the document, I get this assertion in current debug trunk build.

Comment 1

[Jesse Ruderman]

I also get this assertion if I Cmd+click a link to a bug and move my mouse over the new tab's content area before the page loads.  It's pretty annoying.

Comment 2

[Olli Pettay [:smaug][[e-mail]]]

http://mxr.mozilla.org/mozilla-central/source/layout/base/nsPresShell.cpp#5605
I guess we could try to find a target a bit harder - not only targetView = targetView->GetParent(), but also from parent presShell or something like that.
This all would go away, I think, if we had only one view hierarchy (or no views at all).
Anyway, that shouldn't be an assertion, but maybe a warning, if even that.

Comment 3

[Jesse Ruderman]

WFM on Mac using the testcase in comment 0.  I can't reproduce the problem in comment 1 any more, either.

Btw, bug 404798 turned this assertion into a warning.  But I'm not even hitting the warning using the testcase or steps here.

Comment 4

[Jesse Ruderman]

We already have lots of crashtests like this, so in-testsuite+.