Closure Type

[MinusGix]

How does one receive a closure as a value? Ex:

use rune_testing::*;
fn main() -> runestick::Result<()> {
    let function: Function = rune! {
        Function => r#"fn main() {
            |a, b| a + b
        }"#
    };
    println!("{}", function.call::<(i64, i64), i64>((1, 3))?);
    println!("{}", function.call::<(i64, i64), i64>((2, 6))?);
    Ok(())
}

Would panic with: thread 'main' panicked at 'program to run successfully: VmError { kind: Expected { expected: StaticType(StaticType { name: "Function", hash: Hash(0x45b788b02e7f231c) }), actual: Hash(Hash(0x9aa62663879132fb)) } }', src/main.rs:4:30
Expected behavior: Being able to receive the closure and call it.
(My main usecase for storing closures would be for callbacks, ex: a button being pressed, so somewhat similar to the example)

[udoprog]

Thanks for the report!

This looks like an issue with a recently introduced optimization. Closures which do not capture anything from their environment are treated like function. In this case the value being pushed is being pushed as a type, rather than a function. Fix coming up!