[Webkit-unassigned] [Bug 178189] New: Correct nullptr deref in selection handling

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=178189

            Bug ID: 178189
           Summary: Correct nullptr deref in selection handling
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Editing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bfulgham at webkit.org
                CC: wenson_hsieh at apple.com

The 'Selection::toNormalizedRange()' returns nullptr for various conditions, specifically for a 'None' selection, but also for an "Orphaned" range.

We should make sure we check that 'toNormalizedRange' returns a non-null pointer before using it.

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