[Bug d/123264] d: Infinite loop in dump_generic_node

[ibuclaw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123264

--- Comment #1 from Iain Buclaw <ibuclaw at gcc dot gnu.org> ---
Cause looks to be finish_aggregate_type() - TYPE_NAME isn't propagated to any
forward referenced variants.