PATCH: PR c++/39188: G++ doesn't handle static anonymous union right

[Jason Merrill]

H.J. Lu wrote:
>       DECL_NAME (anon_union_decl) = DECL_NAME (main_decl);
>       mangle_decl (anon_union_decl);
>       DECL_NAME (anon_union_decl) = NULL_TREE;

Ah, of course--I read the first line and then stopped.

But I don't think we can get that far into assemble_variable for a 
variable with no assembler name; I think it's better to just remove the 
DECL_NAME check rather than add a DECL_ASSEMBLER_NAME check which will 
always be true.

Jason