[Webkit-unassigned] [Bug 155258] New: REGRESSION (r197149): Missing availability checks when soft-linking DataDetectors.framework

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=155258

            Bug ID: 155258
           Summary: REGRESSION (r197149): Missing availability checks when
                    soft-linking DataDetectors.framework
    Classification: Unclassified
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ddkilzer at webkit.org
                CC: beidson at apple.com, sam at webkit.org, thorton at apple.com

The DataDetectors.framework is not available in the Base System on Mac OS X, but the code that soft-linked the framework did not always check to see if the framework was available before trying to use classes, constants and functions from it.

When r197149 landed (as a follow-up fix for Bug 154364), this caused the lack of runtime checking to turn into a release assert because Objective-C classes that were assumed to be available were actually not.

Bug 154364: [Cocoa] Always check the return value of dlopen() and dlsym() in Release builds
<https://bugs.webkit.org/show_bug.cgi?id=154364>
<http://trac.webkit.org/changeset/197149>

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