Is Xcode Version 12.0 (12A7209) broken?

I just installed Xcode Version 12.0 (12A7209) and now in my projects the scoping is all broken.

When building a command line app Classes and functions I define in groups are not found by the compiler.

Is anyone else having this problem?
Yes!! This issue is keeping me from any sort of production in my project, please help!!
Is Xcode Version 12.0 (12A7209) broken?
 
 
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