... use of ... is hidden by ...; use alias ... to introduce base class overload set ??

[Robert M. Münch]

On 2019-10-25 15:20:21 +0000, Ali ‡ehreli said:

> On 10/25/2019 07:34 AM, Robert M. Münch wrote:
> 
>  > If the compiler is a 1-pass one I see the problem, otherwise one could
>  > first get a "total overview" and create the necessary vtbl entries after
>  > everything is known. Maybe this is not "how a compiler is implemented"
>  > but the problem sounds solvable for me.
> 
> Unfortunately, it's not the compiler but the linker that produces the 
> program (dmd and others conveniently call the linker behind the scenes).

Yes, sure...

> It's common to compile the compilation units e.g. with "dmd -c" and 
> then link them together at the end. C++ has been suffering from the 
> fact that linkers are language agnostic but the linker is a part of the 
> operating system, so this is what we got.
> 
> Otherwise, I would agree with you. But even then, what about dynamic 
> libraries? The library was built with 7 instances of a template but I 
> have 8 instances in my program. This is related to the operating system 
> 'loader', which happens to be the sister of the 'linker'. :)

The thing here would be to "instrument" or generate other code if such 
a case shows up, so be prepared for the case when such a dynamic case 
shows up. However, I can imagine that at the end one ends with a VM, 
that provides an eco-system that abstracts all these problems away... 
but than you are no longer a system language and won't have the common 
C compatible ABI.

I'll live the with cicumstance and as you showed, there is a solution 
to the problem.

-- 
Robert M. Münch
http://www.saphirion.com
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