[Webkit-unassigned] [Bug 255047] New: AX: AccessibilityRenderObject::addRemoteSVGChildren() should protect the created SVG object with a RefPtr

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=255047

            Bug ID: 255047
           Summary: AX: AccessibilityRenderObject::addRemoteSVGChildren()
                    should protect the created SVG object with a RefPtr
           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: tyler_w at apple.com
                CC: andresg_22 at apple.com,
                    webkit-bug-importer at group.apple.com

Per https://github.com/WebKit/WebKit/wiki/Smart-Pointer-Usage-Guidelines:

> Every object passed to a non-trivial function as an argument (including "this" pointer) should be stored as a Ref, RefPtr, CheckedRef, or CheckedPtr in the caller’s local scope
Let's bring this function inline with this guidance since AccessibilityObject::addChild is not trivial.

This RefPtr will be free in the common case that there is no remote SVG root object to add.

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