Function exception_across_no_wasm

tests/all/exceptions.rs:187–216

(config: &mut Config)

#[wasmtime_test(wasm_features(exceptions))]
fn exception_across_no_wasm(config: &mut Config) -> Result<()> {
    let engine = Engine::new(config)?;
    let mut store = Store::new(&engine, ());

    let functy = FuncType::new(&engine, [ValType::I32], []);
    let tagty = TagType::new(functy.clone());
    let exnty = ExnType::from_tag_type(&tagty).unwrap();
    let exnpre = ExnRefPre::new(&mut store, exnty);
    let tag = Tag::new(&mut store, &tagty)?;
    let extfunc = Func::new(&mut store, functy, move |mut caller, args, _rets| {
        let exn = ExnRef::new(
            &mut caller,
            &exnpre,
            &tag,
            &[Val::I32(args[0].unwrap_i32())],
        )
        .unwrap();
        caller.as_context_mut().throw(exn)?;
        Ok(())
    });
    let mut results = [];
    let result = extfunc.call(&mut store, &[Val::I32(42)], &mut results[..]);
    assert!(result.is_err() && result.unwrap_err().downcast::<ThrownException>().is_ok());
    let exn = store.take_pending_exception().unwrap();
    let exntag = exn.tag(&mut store)?;
    assert!(Tag::eq(&exntag, &tag, &store));
    assert_eq!(exn.field(&mut store, 0)?.unwrap_i32(), 42);

    Ok(())
}

#[wasmtime_test(wasm_features(gc, exceptions))]
#[cfg_attr(miri, ignore)]