[Lazarus] Overloading with generic type as parmeter causes compiler error.

[Sven Barth]

On 30.04.2012 17:45, Donald R. Ziesig wrote:
> Hi All!
>
> I am working on a generic type library and ran into a problem at compile
> time.
>
> type
> generic TMyType<T> = class
> *
> *
> *
> function IndexOf( Item : T ) : Integer; overload;
> functionIndexOf( aName : String) : Integer; overload;
>
> // generics1.pas Error: Function is already declared Public\Forward
> "TMyType.IndexOf(AnsiString):LongInt;"
>
> // or, reverse the declarations:
>
> function IndexOf( aName : String ) : Integer; overload;
> function IndexOf( Item : T ) : Integer; overload;
>
> // generics1.pas Error: Function is already declared Public\Forward
> "TMyType.IndexOf(<undefined type>):LongInt;"
>
> end;
>
> Similar errors occur in implementation of the overloaded subprograms, as
> in:
>
> // generics1.pas Error: function header "IndexOf" doesn't match forward
> : var name changes aName => Item
>
>
> The obvious work-around is to avoid overloading with generic types as
> parameters, but that is really a hack in this case.
>
> Keep up the GREAT work,

What version of FPC did you try with? If it was 2.6.0 or 2.6.1 or 
anything older then please try with a recent trunk version. I fixed this 
problem some weeks ago.
If you already tested with a recent trunk version of FPC than please 
open a bug report for the compiler with a simple example that does not 
depend on the LCL and should compile.

Regards,
Sven