Code does not compile with Elements 13.x

Elements Oxygene
1

This code no longer compiles with latest Elements compiler (13.x)

unit System_;

interface

type
  // Bound to objects
  CObject = public Object;

    // TPropertyFilterFunc = reference to function (const AProperty: String) : Boolean;

  CObjectTypeHelper = public extension class(CObject)
    public
        class function  &From<T>(const Value: T): CObject; overload;
  end;

implementation

class function CObjectTypeHelper.&From<T>(const Value: T): CObject;
begin
  Result := T(Value);
end;

end.

Error: (E62) Type mismatch, cannot assign “T” to “CObject”

This code did compile using Elements 12.X

2

Hi!

Sorry, I’m unable to reproduce this with latest Elements (13.0.0.3087), what exact version are you using?

image
image951×487 84 KB

image
image1121×666 122 KB

3

13.0.0.3081, the last ‘stable’ release. I’ll update to 3087 and retry the code.

4

Hello again,

Using 13.0.0.3087 now.

It seems that the error only occurs when you set Delphi compatibility to ‘True’:

image
image2583×967 171 KB

5

I realized that the code should actually read:

class function CObjectTypeHelper.&From(const Value: T): CObject;
begin
Result := CObject(Value);
end;

Now it works…

6

Thanx, this helps. What platform is this: .NET, Island/Windows, or something else?

7

Logged as bugs://E27695.

8

bugs://E27695 was closed as fixed.

9

Fixed for tomorrow’s build. Our apologies for this regression.