Kriskras99 commented on code in PR #519:
URL: https://github.com/apache/avro-rs/pull/519#discussion_r3020968332
##########
avro/src/serde/derive.rs:
##########
@@ -590,11 +593,16 @@ where
named_schemas: &mut HashSet<Name>,
enclosing_namespace: NamespaceRef,
) -> Schema {
- let variants = vec![
- Schema::Null,
- T::get_schema_in_ctxt(named_schemas, enclosing_namespace),
- ];
-
+ let variants = match T::get_schema_in_ctxt(named_schemas,
enclosing_namespace) {
+ Schema::Union(union) if
union.index_of_schema_kind(SchemaKind::Null).is_some() => {
+ union.schemas
Review Comment:
This must panic. Otherwise `Option<Enum { A, B(String) }>` is equivalent to
`Enum { A, B(String) }`, so you would never be able to deserialize
`Some(Enum::A)`.
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