[Webkit-unassigned] [Bug 198093] New: [CMake] Build with hidden visibility by default

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=198093

            Bug ID: 198093
           Summary: [CMake] Build with hidden visibility by default
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CMake
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: chris.reid at sony.com

Hidden visibility is needed for CFI. Clang will only emit CFI checks for a class if it can infer hidden visibility.
Michael mentioned that there were some issues hit with GTK and hidden visibility where some static object instances can be duplicated in multiple shared objects https://bugs.webkit.org/show_bug.cgi?id=197920.

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