It is possible to 'use' the current unit in the Implementation section without errors

Description

Reported by Jani Järvinen; checked by Rune Moberg

Problem example:
Create a unit:

Unit MyUnit;

Interface

Implementation

Uses MyUnit; { this should not compile }

End.

The above code compiles happily. For example in Borland Pascal 7.0 the above fails with error message "Identifier redeclared.". If the Uses clause is moved to the Interface section, Delphi doesn't compile the unit.

Solution / workaround

None needed, as this bug doesn't result in any problems.

The compiler accepts that a subroutine declared as a function is implemented as a procedure and the other way around.

Description

Reported by Clinton R. Johnson; checked by Reinier Sterkenburg

Examples:

interface

function func: Integer;
procedure proc;

implementation

procedure func;
begin
  Result := 10;
  ShowMessage('func');
end;

function proc;
begin
  ShowMessage('proc');
end;

These are compiled without complaints. This not only 'works' for subroutines in an interface, but also for methods of objects.