[Webkit-unassigned] [Bug 210201] New: [ iOS wk2 Debug ] WTFCrash + 14 (Assertions.cpp:309) - WebKit::EditorState::postLayoutData()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=210201

            Bug ID: 210201
           Summary: [ iOS wk2 Debug ] WTFCrash + 14 (Assertions.cpp:309) -
                    WebKit::EditorState::postLayoutData()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: iPhone / iPad
                OS: iOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Lawrence.j at apple.com

Created attachment 395840

  --> https://bugs.webkit.org/attachment.cgi?id=395840&action=review

empty-document-delete-crash-log

editing/editability/empty-document-delete.html

Description:
This test is flaky crashing on iOS wk2 Debug when using the iPhone SE simulator. This test has only crashed three times total, in the visible history, with the oldest crash on 03/26/2020.

History:
https://results.webkit.org/?suite=layout-tests&test=editing%2Feditability%2Fempty-document-delete.html&platform=ios&style=debug&recent=false&model=iPhone%20SE&limit=50000

Crash log:
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.JavaScriptCore            0x000000010c8f93ee WTFCrash + 14 (Assertions.cpp:309)
1   com.apple.WebKit                    0x000000011bd3d1db WebKit::EditorState::postLayoutData() const + 91 (EditorState.h:157)
2   com.apple.WebKit                    0x000000011ceca25f -[WKContentView(WKInteraction) _selectionClipRect] + 351 (WKContentViewInteraction.mm:1998)
3   com.apple.UIKitCore                 0x0000000144028247 -[UITextSelectionView updateSelectionRects] + 2647
4   com.apple.UIKitCore                 0x0000000144028d09 -[UITextSelectionView updateSelectionRectsIfNeeded] + 84
5   com.apple.UIKitCore                 0x0000000144028c78 __51-[UITextSelectionView deferredUpdateSelectionRects]_block_invoke + 34
6   com.apple.CoreFoundation            0x000000011353f867 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
7   com.apple.CoreFoundation            0x000000011353a2fe __CFRunLoopDoObservers + 430
8   com.apple.CoreFoundation            0x000000011353a863 __CFRunLoopRun + 1235
9   com.apple.CoreFoundation            0x000000011353a066 CFRunLoopRunSpecific + 438
10  com.apple.Foundation                0x0000000112c0b86f -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 211
11  org.webkit.WebKitTestRunnerApp      0x000000010b9adfd0 WTR::TestController::platformRunUntil(bool&, WTF::Seconds) + 304
12  org.webkit.WebKitTestRunnerApp      0x000000010b96b47f WTR::TestController::runUntil(bool&, WTF::Seconds) + 79
13  org.webkit.WebKitTestRunnerApp      0x000000010b971cf4 WTR::TestController::clearIndexedDatabases() + 100
14  org.webkit.WebKitTestRunnerApp      0x000000010b971308 WTR::TestController::resetStateToConsistentValues(WTR::TestOptions const&, WTR::TestController::ResetStage) + 1096
15  org.webkit.WebKitTestRunnerApp      0x000000010b9b3598 WTR::TestInvocation::invoke() + 520
16  org.webkit.WebKitTestRunnerApp      0x000000010b975498 WTR::TestController::runTest(char const*) + 536
17  org.webkit.WebKitTestRunnerApp      0x000000010b975ed6 WTR::TestController::runTestingServerLoop() + 214
18  org.webkit.WebKitTestRunnerApp      0x000000010b96bef7 WTR::TestController::run() + 39
19  org.webkit.WebKitTestRunnerApp      0x000000010b96b821 WTR::TestController::TestController(int, char const**) + 897
20  org.webkit.WebKitTestRunnerApp      0x000000010b96bfc3 WTR::TestController::TestController(int, char const**) + 35
21  org.webkit.WebKitTestRunnerApp      0x000000010b9517cc -[WebKitTestRunnerApp _runTestController] + 44
22  com.apple.Foundation                0x0000000112c21c30 __NSThreadPerformPerform + 259
23  com.apple.CoreFoundation            0x0000000113540471 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
24  com.apple.CoreFoundation            0x000000011354039c __CFRunLoopDoSource0 + 76
25  com.apple.CoreFoundation            0x000000011353fbcc __CFRunLoopDoSources0 + 268
26  com.apple.CoreFoundation            0x000000011353a87f __CFRunLoopRun + 1263
27  com.apple.CoreFoundation            0x000000011353a066 CFRunLoopRunSpecific + 438
28  com.apple.GraphicsServices          0x000000011315fbb0 GSEventRunModal + 65
29  com.apple.UIKitCore                 0x0000000143d70d4d UIApplicationMain + 1621
30  org.webkit.WebKitTestRunnerApp      0x000000010b95197b main + 139
31  libdyld.dylib                       0x0000000118d36c25 start + 1

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