| //@ run-pass | |
| //@ pretty-expanded FIXME #23616 | |
| pub trait OpInt { fn call(&mut self, _: isize, _: isize) -> isize; } | |
| impl<F> OpInt for F where F: FnMut(isize, isize) -> isize { | |
| fn call(&mut self, a:isize, b:isize) -> isize { | |
| (*self)(a, b) | |
| } | |
| } | |
| fn squarei<'a>(x: isize, op: &'a mut dyn OpInt) -> isize { op.call(x, x) } | |
| fn muli(x:isize, y:isize) -> isize { x * y } | |
| pub fn main() { | |
| let mut f = |x, y| muli(x, y); | |
| { | |
| let g = &mut f; | |
| let h = g as &mut dyn OpInt; | |
| squarei(3, h); | |
| } | |
| } |