julia

5a2faa4c - inference: allow `PartialStruct` to represent strict undef field (#57541)

inference: allow `PartialStruct` to represent strict undef field (#57541) This change allows `PartialStruct` to represent structs with strictly uninitialized fields. Now the previous `undef::BitVector` field is changed to `undefs::Vector{Union{Nothing,Bool}}` to encode defined-ness information of each field. Also, this lets us fix the length of `typ::PartialStruct`'s `fields` to always match the number of fields in `typ.typ`. Instead of the current design where the length of `fields` changes depending on the number of initialized fields, it seems simpler to have `PartialStruct`s representing the same `typ` always have the same `fields` length. So, I've included that refactoring as well. - fixes the newly detected error in Oscar.jl