| // Copyright 2018 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // All the possible mutability error cases. |
| |
| #![allow(unused)] |
| |
| type MakeRef = fn() -> &'static (i32,); |
| type MakePtr = fn() -> *const (i32,); |
| |
| fn named_ref(x: &(i32,)) { |
| *x = (1,); //~ ERROR |
| x.0 = 1; //~ ERROR |
| &mut *x; //~ ERROR |
| &mut x.0; //~ ERROR |
| } |
| |
| fn unnamed_ref(f: MakeRef) { |
| *f() = (1,); //~ ERROR |
| f().0 = 1; //~ ERROR |
| &mut *f(); //~ ERROR |
| &mut f().0; //~ ERROR |
| } |
| |
| unsafe fn named_ptr(x: *const (i32,)) { |
| *x = (1,); //~ ERROR |
| (*x).0 = 1; //~ ERROR |
| &mut *x; //~ ERROR |
| &mut (*x).0; //~ ERROR |
| } |
| |
| unsafe fn unnamed_ptr(f: MakePtr) { |
| *f() = (1,); //~ ERROR |
| (*f()).0 = 1; //~ ERROR |
| &mut *f(); //~ ERROR |
| &mut (*f()).0; //~ ERROR |
| } |
| |
| fn fn_ref<F: Fn()>(f: F) -> F { f } |
| |
| fn ref_closure(mut x: (i32,)) { |
| fn_ref(|| { |
| x = (1,); //~ ERROR |
| x.0 = 1; //~ ERROR |
| &mut x; //~ ERROR |
| &mut x.0; //~ ERROR |
| }); |
| fn_ref(move || { |
| x = (1,); //~ ERROR |
| x.0 = 1; //~ ERROR |
| &mut x; //~ ERROR |
| &mut x.0; //~ ERROR |
| }); |
| } |
| |
| fn imm_local(x: (i32,)) { |
| &mut x; //~ ERROR |
| &mut x.0; //~ ERROR |
| } |
| |
| fn imm_capture(x: (i32,)) { |
| || { //~ ERROR |
| x = (1,); |
| x.0 = 1; |
| &mut x; |
| &mut x.0; |
| }; |
| move || { |
| x = (1,); //~ ERROR |
| x.0 = 1; //~ ERROR |
| &mut x; //~ ERROR |
| &mut x.0; //~ ERROR |
| }; |
| } |
| |
| static X: (i32,) = (0,); |
| |
| fn imm_static() { |
| X = (1,); //~ ERROR |
| X.0 = 1; //~ ERROR |
| &mut X; //~ ERROR |
| &mut X.0; //~ ERROR |
| } |
| |
| fn main() {} |