Hairy Pixels via fpc-pascal <fpc-pascal@lists.freepascal.org> schrieb am Mi., 9. Aug. 2023, 04:59:
> 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. By default @ returns a *untyped* pointer that can be assigned to any pointer type. Thus is compatible with Delphi and can be controlled with the $TypedAddress directive (there's a slight exception to this when you assign a pointer to a function to a function variable (etc) or pass it to such a parameter, because the compiler has to pick the correct overload if there are multiple functions with the same name in scope). Regards, Sven >
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