| #![feature(if_let_guard, let_chains)] |
| |
| fn main() { |
| let mut x = Some(String::new()); |
| let ref mut y @ ref mut z = x; |
| //~^ ERROR: mutable more than once |
| let Some(ref mut y @ ref mut z) = x else { return }; |
| //~^ ERROR: mutable more than once |
| if let Some(ref mut y @ ref mut z) = x {} |
| //~^ ERROR: mutable more than once |
| if let Some(ref mut y @ ref mut z) = x && true {} |
| //~^ ERROR: mutable more than once |
| while let Some(ref mut y @ ref mut z) = x {} |
| //~^ ERROR: mutable more than once |
| while let Some(ref mut y @ ref mut z) = x && true {} |
| //~^ ERROR: mutable more than once |
| match x { |
| ref mut y @ ref mut z => {} //~ ERROR: mutable more than once |
| } |
| match () { |
| () if let Some(ref mut y @ ref mut z) = x => {} //~ ERROR: mutable more than once |
| _ => {} |
| } |
| } |