[Webkit-unassigned] [Bug 171363] New: Web Inspector: ASSERT(!m_startedComposite) fails when recording on non-Cocoa Timeline
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Apr 26 20:04:10 PDT 2017
https://bugs.webkit.org/show_bug.cgi?id=171363
Bug ID: 171363
Summary: Web Inspector: ASSERT(!m_startedComposite) fails when
recording on non-Cocoa Timeline
Product: WebKit
Version: WebKit Nightly Build
Hardware: All
OS: All
Status: NEW
Severity: Normal
Priority: P2
Component: Web Inspector
Assignee: webkit-unassigned at lists.webkit.org
Reporter: ross.kirsling at sony.com
CC: inspector-bugzilla-changes at group.apple.com
It appears that when compositing events were implemented, this wasn't done in an entirely safe fashion for non-Cocoa platforms:
https://bugs.webkit.org/show_bug.cgi?id=146168
Specifically, the asserts for InspectorTimelineAgent::willComposite and InspectorTimelineAgent::didComposite ensure that one is not used without the other, yet didComposite is called within a PLATFORM(COCOA) block while willComposite is called on all platforms.
Asserts: https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/inspector/InspectorTimelineAgent.cpp#L358
didComposite callsite: https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/inspector/InspectorTimelineAgent.cpp#L196
willComposite callsite: https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/page/FrameView.cpp#L1234
As such, on any non-Cocoa platform, the second compositing event in a timeline recording causes an assertion failure.
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