[fpc-pascal] Pointer question

[Hairy Pixels via fpc-pascal]

I just noticed this by accident and I don't understand. Why does " x := @r; " 
compile? I would expect it to fail like the next line where I cast to the 
explicit type.

type
  TMyRec = record end;
  PMyRec = ^TMyRec;
var
  x: PByte;
  r: TMyRec;
begin
  x := @r;                // works
  x := PMyRec(@r);  // fails
end

Regards,
        Ryan Joseph

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