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Subject: Re: Unchecked_Union record inside an other record - trouble
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Date: 2014-08-08T14:09:00-06:00
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On 08-Aug-14 13:56, Victor Porton wrote:
> For records interfacing with C it SHOULD be ignored completely. Because it
> is C.

Not in your example; the subcomponent is part of a record which is *not* 
a C-style union, it should therefore store the proper tag value 
(discriminant) in its own discriminant.

    type T2(K: Kind) is
       record
          Z: int;
          Ob: T(K);
       end record
    with Convention=>C;

Yields:
   warning: variant record has no direct equivalent in C
   warning: use of convention for type "T2" is dubious
So, remove Convention => C.