11 lines
314 B
Rust

//@ edition:2021
//@ revisions: current next
//@ ignore-compare-mode-next-solver (explicit revisions)
//@[next] compile-flags: -Znext-solver
fn main() {
fn needs_fn(x: impl FnOnce()) {}
needs_fn(async || {});
//~^ ERROR expected `{async closure@is-not-fn.rs:8:14}` to be a closure that returns `()`
}