| #![feature(fn_traits, unboxed_closures)] |
| |
| use std::ops::FnMut; |
| |
| struct S { |
| x: isize, |
| y: isize, |
| } |
| |
| impl FnMut<isize> for S { |
| extern "rust-call" fn call_mut(&mut self, z: isize) -> isize { |
| self.x + self.y + z |
| } |
| //~^^^ ERROR functions with the "rust-call" ABI must take a single non-self argument |
| } |
| |
| impl FnOnce<isize> for S { |
| type Output = isize; |
| extern "rust-call" fn call_once(mut self, z: isize) -> isize { self.call_mut(z) } |
| //~^ ERROR functions with the "rust-call" ABI must take a single non-self argument |
| } |
| |
| fn main() { |
| let mut s = S { |
| x: 1, |
| y: 2, |
| }; |
| drop(s(3)) //~ ERROR cannot use call notation |
| } |