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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/11/03 22:29:24 UTC

[GitHub] [arrow] nevi-me commented on pull request #8560: ARROW-10448: [Rust] Remove PrimitiveArray::new that can cause UB

nevi-me commented on pull request #8560:
URL: https://github.com/apache/arrow/pull/8560#issuecomment-721407466


   I think we have a similar problem with building arrays from `ArrayDataBuilder` because when building `ArrayData`, we don't check if the length of the array corresponds with the buffer's length (or if it's even specified).
   
   So something like the below gets created, but ends up as a 0-len array
   
   ```rust
   // try build array data without specifying length
   ArrayData::builder(DataType::_).buffers(vec![buffer1, buffer2]).build()
   ```


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