Error with overloaded method

[Neuromancer]

Hello,

I wrote the following class with an overloaded procedure :

Code: Pascal  [Select][+][-]

1. TSerialSizer = class(TInterfacedObject, ISerializer)
2.     protected
3.         FLength : Integer;
4.     public
5.         constructor Create;
6.         procedure IO(AValue : PChar); overload;
7.         procedure IO(AValue : PSmallInt); overload;
8.         procedure IO(AValue : PInteger); overload;
9.         procedure IO(AValue : PString); overload;
10.         function GetLength : Integer;
11.     end;

Code: Pascal  [Select][+][-]

1. procedure TSerialSizer.IO(AValue : PString);
2. begin
3.     IO(FLength);
4.     Inc(FLength, Length(AValue^));
5. end;

I get the following error :

/home/jerome/Projects/pascal/mylibs/serialization/serialsizer.pas(52,15) Error: Incompatible type for arg no. 1: Got "LongInt", expected "PString"

[marcov]

You pass flength, which is integer and there is no overload for integer, so what do you exactly expect ?