alamb opened a new issue #151:
URL: https://github.com/apache/arrow-rs/issues/151


   *Note*: migrated from original JIRA: 
https://issues.apache.org/jira/browse/ARROW-10982
   
   There are ~18 uses of unsafe in ffi.rs and we should document them according 
to the guidelines in the Arrow crate README
   
    
   {code:java}
   // JUSTIFICATION
   //  Benefit
   //      Describe the benefit of using unsafe. E.g.
   //      "30% performance degradation if the safe counterpart is used, see 
bench X."
   //  Soundness
   //      Describe why the code remains sound (according to the definition of 
rust's unsafe code guidelines). E.g.
   //      "We bounded check these values at initialization and the array is 
immutable."
   let ... = unsafe { ... }; {code}


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