runtime mangling

[Martin von Loewis]

> What are people's preferences for the underlying principle?  The method
> of specification?

For the __cxa routines, it seems that linkage is not relevant to the
user; since they are in implementation namespace, there is no need to
put them explicitly into a reserved namespace. I think giving them C
linkage would be fine.

I could not find a definite decision on naming the namespace for
user-callable functions; I still dislike using a non-reserved name
(abi).  As you recall, the problem is that users could come up with
programs that are completely well-formed standard C++, which still
would fail in a C++ ABI implementation.

Regards,
Martin