rust/tests/ui/closures/issue-80313-mutation-in-closure.rs

fn main() {
    let mut my_var = false;
    let callback = || {
        my_var = true;
    };
    callback(); //~ ERROR E0596
}
Point to span of upvar making closure FnMut Add expected error Add comment Tweak comment wording Fix after rebase to updated master Fix after rebase to updated master Distinguish mutation in normal and move closures Tweak error message Fix error message for nested closures Refactor code showing mutated upvar in closure Remove debug assert B 2021-01-18 08:04:55 +00:00			`fn main() {`
			`let mut my_var = false;`
			`let callback = \|\| {`
			`my_var = true;`
			`};`
			`callback(); //~ ERROR E0596`
			`}`