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    Delphi Error – E2507 CLASS constraint and RECORD constraint cannot be specified together

    admin November 17, 2022 No Comments

    Delphi Compiler Error

    E2507 CLASS constraint and RECORD constraint cannot be specified together

    Reason for the Error & Solution

    This occurs when declaring the generic type parameter of both class and record type. 

    program E2507;

{$APPTYPE CONSOLE}

uses
  SysUtils;

type
  TGenericsError<T: class, record> =  class // E2507
  end;

begin
  Writeln('FAIL - CLASS constraint and RECORD constraint cannot be specified together');
end.

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