[Webkit-unassigned] [Bug 259512] New: AX: Crash in AXTextMarkerRange constructor when passed a null AXTextMarkerRangeRef.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=259512

            Bug ID: 259512
           Summary: AX: Crash in AXTextMarkerRange constructor when passed
                    a null AXTextMarkerRangeRef.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: andresg_22 at apple.com
                CC: andresg_22 at apple.com,
                    webkit-bug-importer at group.apple.com

(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BREAKPOINT (code=1, subcode=0x1889503d0)
  * frame #0: 0x00000001889503d0 CoreFoundation`CFRelease.cold.1 + 16
    frame #1: 0x00000001887745cc CoreFoundation`CFRelease + 132
    frame #2: 0x000000028095486c WebCore`WebCore::AXTextMarkerRange::AXTextMarkerRange(this=0x000000016fa97650, textMarkerRangeRef=0x0000000000000000) at AXTextMarkerCocoa.mm:81:5
    frame #3: 0x00000002809548dc WebCore`WebCore::AXTextMarkerRange::AXTextMarkerRange(this=0x000000016fa97650, textMarkerRangeRef=0x0000000000000000) at AXTextMarkerCocoa.mm:72:1
    frame #4: 0x0000000286020cc4 WebCore`-[WebAccessibilityObjectWrapper _accessibilitySetValue:forAttribute:]::$_49::operator(this=0x0000000110252a68)() const at WebAccessibilityObjectWrapperMac.mm:2713:64
...

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