Bug 133064 - [Mac] Crash during scroll when latched
Summary: [Mac] Crash during scroll when latched
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: WebCore Misc. (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Brent Fulgham
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2014-05-18 22:38 PDT by Brent Fulgham
Modified: 2014-05-18 22:51 PDT (History)
5 users (show)

See Also:

Attachments
Patch (1.36 KB, patch)
2014-05-18 22:47 PDT, Brent Fulgham 		simon.fraser: review+
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Description Brent Fulgham 2014-05-18 22:38:23 PDT 
It's possible to be latched to a DOM element, then attempt a new scroll event where the hit test for the mouse event returns NULL for the target element. When this happens, the NULL element is dereferenced without a NULL check resulting in a crash.

This patch corrects this mistake.
Comment 1 Brent Fulgham 2014-05-18 22:39:00 PDT 
<rdar://problem/16761067>
Comment 2 Brent Fulgham 2014-05-18 22:47:11 PDT 
Created attachment 231676 [details]
Patch
Comment 3 Brent Fulgham 2014-05-18 22:49:32 PDT 
Wow, Simon. That was fast!
Comment 4 Brent Fulgham 2014-05-18 22:51:03 PDT 
Committed r169037: <http://trac.webkit.org/changeset/169037>