On Tue, Oct 25, 2016 at 08:06:12PM +0200, Jakub Jelinek wrote:
> I think this patch should fix it, will bootstrap/regtest it now:
> 
> 2016-10-25  Jakub Jelinek  <ja...@redhat.com>
> 
>       * dwarf2out.c (gen_member_die): Only reparent_child instead of
>       splice_child_die if child doesn't have DW_AT_specification attribute.

Bootstrapped/regtested on x86_64-linux and i686-linux now, with this
patch C++14 static data members are treated in debug info as they were in
the past, just C++17 static constexpr data mambers or other static inline
data members are treated the new way (definition in DW_TAG_member).

Ok for trunk?

> --- gcc/dwarf2out.c.jj        2016-10-25 19:49:28.000000000 +0200
> +++ gcc/dwarf2out.c   2016-10-25 20:02:33.264639847 +0200
> @@ -22624,7 +22624,8 @@ gen_member_die (tree type, dw_die_ref co
>         /* Handle inline static data members, which only have in-class
>            declarations.  */
>         if (child->die_tag == DW_TAG_variable
> -           && child->die_parent == comp_unit_die ())
> +           && child->die_parent == comp_unit_die ()
> +           && get_AT (child, DW_AT_specification) == NULL)
>           {
>             reparent_child (child, context_die);
>             child->die_tag = DW_TAG_member;
> 

        Jakub

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