[Webkit-unassigned] [Bug 77217] New: NULL ptr in WebCore::Range::checkDeleteExtract

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=77217

           Summary: NULL ptr in WebCore::Range::checkDeleteExtract
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows Vista
            Status: NEW
          Severity: Normal
          Priority: P1
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: skylined at chromium.org
                CC: rniwa at webkit.org


Detailed report: https://cluster-fuzz.appspot.com/testcase?key=15997142

Uploader: skylined at chromium.org

Crash Type: UNKNOWN
Crash Address: 0x000000000000
Crash State:
  - crash stack -
  WebCore::Range::checkDeleteExtract
  WebCore::Range::extractContents
  WebCore::RangeInternal::extractContentsCallback

Regressed: https://cluster-fuzz.appspot.com/revisions?range=108839:108881

Minimized Testcase (1.19 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95EopgBURakkjFiBqu0vSKCtgF8E3pfLKJFon0fcc8hDpohtnhZqZ11sUGDeg8hofuIP8c5ZXeK1Haa7fGCS9JiJz532mCcqFxwTCTSAMe_ky9FDESQ7s7yrHZ1U5Jfxmy5l3jzQGtwDrMmBr1BHRVSq49gjQ

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