index out of bounds for ScalarFnArray

[blaginin]

Issue Description

use vortex::dtype::{DType, Nullability, PType};
use vortex::expr::{gt, root};
use vortex_array::arrays::{ChunkedArray, ConstantArray, PrimitiveArray};
use vortex_array::expr::{and, cast, is_null, lit, not};
use vortex_array::{Array, IntoArray};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let array = ChunkedArray::try_new(
        vec![
            ConstantArray::new(Some(1u64), 0).into_array(),
            PrimitiveArray::from_iter(vec![2u64])
                .into_array()
                .apply(&cast(
                    root(),
                    DType::Primitive(PType::U64, Nullability::Nullable),
                ))?,
        ],
        DType::Primitive(PType::U64, Nullability::Nullable),
    )?
    .to_array();

    let expr = is_null(root());
    expr.evaluate(&array)?;

    Ok(())
}

Expected Behavior

Evaluate successfully

Actual Behavior

thread 'main' panicked at /Users/blaginin/Documents/vortex/vortex-array/src/array/mod.rs:532:9:
index 0 out of bounds

Reproduction Steps

Code above

OS Version Information

MacOS

I acknowledge that:

• I have searched the Vortex repository (both open and closed Discussions and Issues) and confirm this is not a duplicate of an existing issue or discussion.
• I have checked the "Preview" tab on all text fields to ensure that everything looks right, and have wrapped all configuration and code in code blocks with a group of three backticks (```) on separate lines.

[blaginin]

Thanks @robert3005 Fixed in #6067