[Webkit-unassigned] [Bug 187569] New: Need to handle CodeBlock::replacement() being null.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=187569

            Bug ID: 187569
           Summary: Need to handle CodeBlock::replacement() being null.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mark.lam at apple.com

CodeBlock::replacement() may return a nullptr.  Some of our code already checks for this while others do not.  We should add null checks in all the places that need it.

<rdar://problem/41468692>

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