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Re: C ABI: struct/union inconsistency

Richard Henderson <rth@redhat.com> writes:

[...]

| > That means we lose C/C++ compatibility even for a type which is in
| > the common subset of both languages.
| 
| Compatibility between C and C++ is interesting from a data sharing
| standpoint.  Empty classes contain no data to be shared, ergo are
| not interesting.

The point is that do we really want

     struct S s[190];

     assert (s != s + 189);

have different behaviour in that common subset.
I think we should retain objects' identities the same in that common
subset. 

-- Gaby
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