Re: Bye-bye Ada ? (Ada95 Wholesale Changes?)

[Hyman Rosen <hyrosen@mail.com>]

Martin Krischik wrote:
> That would mean that the virtual inline might be elaborated hundreds of
> time - in every compilation unit with a contructor call. With the result
> that no two virtual function tables will look the same.

Excuse me, but you really are extremely mistaken. I repeat, please
acquaint yourself with the language before making pronouncements
about it, so that you will not spread misinformation.

C++ compilers use a variety of means to decide when to generate
"elaborations" of virtual functions. In general, even if this
happens in multiple compilation units, linker directives are used
to indicate that all of the instantiations must be identical and
they are then merged into a single copy. There is only one virtual
table for a class, merged in the same way if needed, so it "looks
the same" by definition. I have no idea what constructors have to
do with any of this, since constructors are never virtual. You
just seem to be confused.

> Some C++ style guides suggest not to use virtual inlines because of it.

Some C++ style guides are desperately out of date, and others have been
written by people with the same lack of knowledge of C++ that you show.
Some descriptions of Ada report that it's a language designed by a
committee, is bloated, was forced upon people by the military, and is
generally unsuitable for any purpose.