Provide, where missing, a copy constructor, a copy assignment operator or a destructor to prevent potential issues that can arise.
The functionality is incomplete and the authors have since shifted gears to other work, so this is effectively unmaintained. The original design document for clang-pseudo can be found at: https://docs.google.com/document/d/1eGkTOsFja63wsv8v0vd5JdoTonj-NlN3ujGF0T7xDbM/edit in case anyone wishes to pick this project back up again in the future. Original RFC: https://discourse.llvm.org/t/removing-pseudo-parser/71131/