[lldb] Resolve Swift-implemented Objective-C classes using Swift runtime #10210
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if the Objective-C runtime fails. This is a minimally invasive patch for the swift/release/6.1 branch to fix a problem with some versions of the Objective-C runtime. If an Objective-C class is lazy, the Objective-C runtie may not have materialized class metadata for it. However, if the class is actually implemented in Swift, we can still resolve it using the Swift runtime. We should probably also add the same logic to the Objective-C runtime, but I don't want risk adding an inifinite recursion this late in the release.
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