Hi,
I where any chance to see FreePascal generating VMT's for classes that is more compatible with C++ / TurboPascal / Delphi one?
To explain mine question: recently I've been porting Delphi framework interfacing to C++ code to FPC and finded out that althrow Delphi VMT layout is compatible to C++ one, FPC is not. Let's see two examples: (1) is C++ and (2) is pascal one. In Delphi and C++ DoSomething method is located at ZERO offtet in VMT (i.e. PPointer(Self)^ == address of DoSomething). In FreePascal DoSomething is located with offset of 80 bytes (i.e. @PPChar(Self)^[80] == address of DoSomething).
(1)
typedef class IMyClass
{
public:
__cdecl virtual void DoSomething()=0;
} *lpMyClass;
(2) type IMyClass = class(TObject) public procedure DoSomething; virtual; cdecl; abstract; end;
Regards, Alexey Barkovoy
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