rust/tests/ui/regions/issue-6157.rs
2024-02-16 20:02:50 +00:00

24 lines
531 B
Rust

//@ 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);
}
}