https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124200
--- Comment #14 from Thomas Berger <loki at loki dot codes> --- (In reply to Nathaniel Shead from comment #7) > I don't think relying on DECL_UID for member ordering will be easy unless we > somehow stream them independently as well and then remap the relevant UIDs > in modules (but this will then also probably break things because modules > uses DECL_UID as the key for various lookup maps). I thought a while about this, how about we stream the origin DECL_UID for example in tree_decl_common::abstract_origin, as far as i can see it, for relevant types, it should be empty (maybe there are some checks on empty/nonempty i didn't validate that right yet). We could guard this behind -freflection, to avoid streaming the original UIDs back in, and it would allow for a consisted ordering with to much overhead, as the same rules as for local decls apply with the differences that a difference field is used for ordering.
