[rustc.git] / src / test / ui / unboxed-closures / unboxed-closure-immutable-capture.rs

// Test that even unboxed closures that are capable of mutating their
// environment cannot mutate captured variables that have not been
// declared mutable (#18335)

fn set(x: &mut usize) { *x = 0; }

fn main() {
    let x = 0;
    move || x = 1; //~ ERROR cannot assign
    move || set(&mut x); //~ ERROR cannot borrow
    move || x = 1; //~ ERROR cannot assign
    move || set(&mut x); //~ ERROR cannot borrow
    || x = 1; //~ ERROR cannot assign
    || set(&mut x); //~ ERROR cannot borrow
    || x = 1; //~ ERROR cannot assign
    || set(&mut x); //~ ERROR cannot borrow
}
Commit	Line	Data
1a4d82fc JJ	1	// Test that even unboxed closures that are capable of mutating their
	2	// environment cannot mutate captured variables that have not been
	3	// declared mutable (#18335)
	4
	5	fn set(x: &mut usize) { *x = 0; }
	6
	7	fn main() {
c34b1796	8	let x = 0;
85aaf69f SL	9	move \|\| x = 1; //~ ERROR cannot assign
	10	move \|\| set(&mut x); //~ ERROR cannot borrow
	11	move \|\| x = 1; //~ ERROR cannot assign
	12	move \|\| set(&mut x); //~ ERROR cannot borrow
	13	\|\| x = 1; //~ ERROR cannot assign
48663c56	14	\|\| set(&mut x); //~ ERROR cannot borrow
85aaf69f	15	\|\| x = 1; //~ ERROR cannot assign
48663c56	16	\|\| set(&mut x); //~ ERROR cannot borrow
1a4d82fc	17	}