fallintoplace opened a new pull request, #1038:
URL: https://github.com/apache/arrow-go/pull/1038

   ## What changed
   
   Carry nullability through anonymous embedded pointer paths while collecting 
reflected struct fields.
   
   ## Why
   
   A promoted non-pointer field beneath an embedded pointer can be absent when 
that pointer is nil. The array builder already emits a null in that case, but 
schema inference marked the field non-nullable because it only inspected the 
leaf field type.
   
   This change makes the inferred schema agree with the values produced by the 
builder, including for multi-level embedded pointer paths.
   
   ## Validation
   
   `go test ./arrow/array/arreflect`
   


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