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#[derive(Copy, Clone)]
struct S;
impl S {
fn mutate(&mut self) {
}
}
fn func(arg: S) {
arg.mutate(); //~ ERROR: cannot borrow `arg` as mutable, as it is not declared as mutable
}
impl S {
fn method(&self, arg: S) {
arg.mutate(); //~ ERROR: cannot borrow `arg` as mutable, as it is not declared as mutable
}
}
trait T {
fn default(&self, arg: S) {
arg.mutate(); //~ ERROR: cannot borrow `arg` as mutable, as it is not declared as mutable
}
}
impl T for S {}
fn main() {
let s = S;
func(s);
s.method(s);
s.default(s);
(|arg: S| { arg.mutate() })(s);
//~^ ERROR: cannot borrow `arg` as mutable, as it is not declared as mutable
}
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