Jefffrey commented on issue #10679:
URL: https://github.com/apache/arrow-rs/issues/10679#issuecomment-5336719664

   correct me if im wrong, but wouldnt that mean any method which dereferences 
an inner field would be unsound if safe construction that fills with garbage is 
possible?
   
   for example here:
   
   
https://github.com/apache/arrow-rs/blob/505afcbfd2c27897f747916e782d41e1593b7007/arrow-schema/src/ffi.rs#L403-L465
   
   what if `self.metadata` is non-null but doesnt point to enough data? i.e. we 
read beyond the allocation its supposed to point to


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