E2021 Class type required (Object Pascal)

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In certain situations the compiler requires a class type:

  • As the ancestor of a class type
  • In the on-clause of a try-except statement
  • As the first argument of a raise statement
  • As the final type of a forward declared class type

program Produce;
  raise 'This would work in C++, but does not in Object Pascal';
	program Solve;
uses SysUtils;
  raise Exception.Create('There is a simple workaround, however');