[jira] [Created] (ARROW-11577) Concat kernel panics on slices of string arrays

["Ben Chambers (Jira)" <ji...@apache.org>]

Ben Chambers created ARROW-11577:
------------------------------------

             Summary: Concat kernel panics on slices of string arrays
                 Key: ARROW-11577
                 URL: https://issues.apache.org/jira/browse/ARROW-11577
             Project: Apache Arrow
          Issue Type: Bug
          Components: Rust
            Reporter: Ben Chambers


See the test case below:
{code:java}
#[test]
fn test_string_array_slices() -> Result<()> {
    let input_1 = StringArray::from(vec!["hello", "A", "B", "C"]);
    let input_2 = StringArray::from(vec!["world", "D", "E", "Z"]);

    let arr = concat(&[
        input_1.slice(1, 3).as_ref(),
        input_2.slice(1, 2).as_ref(),
    ])?;

    let expected_output = StringArray::from(vec!["A", "B", "C", "D", "E"]);

    let actual_output = arr
        .as_any()
        .downcast_ref::<StringArray>()
        .unwrap();
    assert_eq!(actual_output, &expected_output);

    Ok(())
}{code}
Fails with:
{noformat}
range end index 8 out of range for slice of length 7
thread 'compute::kernels::concat::tests::test_string_array_slices' panicked at 'range end index 8 out of range for slice of length 7', arrow/src/array/transform/variable_size.rs:38:23
{noformat}



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