julia

df64e349 - staticdata: fix serialization ordering for cyclic datatype supertypes (#62050)

staticdata: fix serialization ordering for cyclic datatype supertypes (#62050) Change the deferred enqueue for `super` types to utilize a worklist `deferred_supers` that `jl_serialize_reachable` drains only once the pre-order recursion has fully unwound. This allows us to properly defer exploration of the supertype and all of its type parameters. This extends the previous fix in JuliaLang/julia#52752, which did not handle the case that recursion occurs through supertype parameters. These kinds of "special case" / "defer sometimes" behaviors are a great place for bugs to hide anyway, so it is better to have one uniform behavior to handle `super` in the serializer IMO. Case in point: Also fix (1) a bug with `must_be_new_dt` not accounting for `super` deferral and (2) a corner case where items with identical supertypes would be deserialized incorrectly due to how we iterate `uniquing_super`, spotted by inspection by Claude Fable 5 and a more serious problem now that this makes deferrals more common. Fixes #62047 Bug analyzed and fix implemented by Claude Fable 5 <noreply@anthropic.com> 🤖 🪄 I did check its work / revise the changes and I believe its analysis / fix is correct. Co-authored-by: Claude Fable 5 <noreply@anthropic.com>