Bug 225250

Summary: Defend further against a PlatformCALayer's owner becoming null in PlatformCALayerCocoa::drawLayerContents.
Product: WebKit Reporter: Cameron McCormack (:heycam) <heycam>
Component: Layout and RenderingAssignee: Cameron McCormack (:heycam) <heycam>
Status: RESOLVED FIXED    
Severity: Normal CC: bfulgham, simon.fraser, thorton, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Local Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch
none
Patch none

Description Cameron McCormack (:heycam) 2021-04-30 14:07:26 PDT 
At the end of PlatformCALayer::drawLayerContents, we null check layerContents for the platformCALayerShowRepaintCounter call but not the platformCALayerIncrementRepaintCount call.
Comment 1 Cameron McCormack (:heycam) 2021-04-30 14:16:21 PDT 
<rdar://37608882>
Comment 2 Cameron McCormack (:heycam) 2021-04-30 14:50:02 PDT 
Created attachment 427450 [details]
Patch
Comment 3 Cameron McCormack (:heycam) 2021-04-30 14:50:26 PDT 
Created attachment 427452 [details]
Patch
Comment 4 EWS 2021-04-30 18:19:27 PDT 
Committed r276867 (237213@main): <https://commits.webkit.org/237213@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 427452 [details].