blob: 1cf4863bfa999a34cc4262d0afc37530e844b6e2 [file] [log] [blame] [edit]
//@ run-pass
#![allow(unused_variables)]
// Test that you can supply `&F` where `F: FnMut()`.
#![feature(lang_items)]
fn a<F:FnMut() -> i32>(mut f: F) -> i32 {
f()
}
fn b(f: &mut dyn FnMut() -> i32) -> i32 {
a(f)
}
fn c<F:FnMut() -> i32>(f: &mut F) -> i32 {
a(f)
}
fn main() {
let z: isize = 7;
let x = b(&mut || 22);
assert_eq!(x, 22);
let x = c(&mut || 22);
assert_eq!(x, 22);
}