[Bug debug/83935] DWARF for a variant part is incorrect

[tromey at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83935

--- Comment #3 from Tom Tromey <tromey at gcc dot gnu.org> ---
(In reply to Pierre-Marie de Rodat from comment #2)
> Thinking more about it, the rule that the discriminant entry must be a child
> of the variant part entry sounds suspicious to me.

TBH this did not make sense to me, either, which is partly why I originally
wrote my patch the "more natural" way -- then this got caught in review,
see https://reviews.llvm.org/D42082

> I guess I should report these questions to the DWARF discussion mailing
> list. What do you think, Tom?

It's worth a shot, though I think it was tried before, see
http://lists.dwarfstd.org/pipermail/dwarf-discuss-dwarfstd.org/2006-August/001710.html