[cxx-abi-dev] Deleted virtual functions

[Zbigniew Sarbinowski]

> Dennis Handly wrote:
>
> > Not on my implementation where C and C++ calling conventions are the
same.
>
> Given the precedent set with __cxa_pure_virtual, I think we should just
> stick with extern "C".  Having half a solution isn't really very
> interesting.  If we care about implementations where C and C++ linkage
> are incompatible, we should go through the document, find places where
> that assumption shows, and add new entry points as necessary.  (We
> cannot of course remove the existing functions, but we could add new
> functions with C++ linkage.)
>
> But, are there are at this point any implementations for which C and C++
> linkage are incompatible in terms of calling conventions?  If this is
> just a theoretical concern, then we should leave it alone; that the ABI
> constrains new implementations which wish to follow the ABI is not an
> inherent problem.
> Mark Mitchell

Yes, on MVS system C and C++ linkage has different calling convention in
non-xplink mode.  In xplink they are the same but we have to support
non-xplink path as well.

Regards, ______________________________________
Zbigniew Sarbinowski (Zibi)  C++ FE development
8200 Warden Ave. Markham ON, L6G 1C7
C2/712/8200/MKM  Tel: 905-413-6071

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