// Regression test for #69409 struct Cat { meows : usize, how_hungry : isize, } impl Cat { pub fn speak(&mut self) { self.meows += 1; } } fn cat(in_x : usize, in_y : isize) -> Cat { Cat { meows: in_x, how_hungry: in_y } } fn main() { let nyan : Cat = cat(52, 99); nyan.speak = || println!("meow"); //~ ERROR attempted to take value of method nyan.speak += || println!("meow"); //~ ERROR attempted to take value of method }