Function drop_func

tests/all/host_funcs.rs:47–82

()

#[test]
fn drop_func() -> Result<()> {
    static HITS: AtomicUsize = AtomicUsize::new(0);
    struct A;

    impl Drop for A {
        fn drop(&mut self) {
            HITS.fetch_add(1, SeqCst);
        }
    }

    let engine = Engine::default();
    let mut linker = Linker::<()>::new(&engine);
    linker.allow_shadowing(true);

    let a = A;
    linker.func_wrap("", "", move || {
        let _ = &a;
    })?;

    assert_eq!(HITS.load(SeqCst), 0);

    // Define the function again to ensure redefined functions are dropped

    let a = A;
    linker.func_wrap("", "", move || {
        let _ = &a;
    })?;

    assert_eq!(HITS.load(SeqCst), 1);

    drop(linker);

    assert_eq!(HITS.load(SeqCst), 2);

    Ok(())
}

#[test]
#[cfg_attr(miri, ignore)]