[cfe-dev] COM ABI support?

[Csaba Raduly]

Hi,

On Thu, Jul 11, 2013 at 1:43 PM, Kim Gräsman <kim.grasman at gmail.com> wrote:
> Hi Nico,
>
> But the vtable ABI isn't standardized either, is it? Do all compilers
> just happen to implement it the same way?

Some don't. IBM's C/Set++ or the VisualAge C++ compiler for OS/2
didn't (the pointers in the vtable were 8 bytes apart, despite it
being a 32-bit compiler). Our (cross-platform: Windoes, OS/2, Mac,
Unix, NetWare, ...) product had a library with a COM wrapper on it.
All platforms implemented COM in C++, except OS/2, where we had to use
plain C to get the correct layout.

Csaba
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