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// extra unused mut lint tests for #51918
// check-pass
#![feature(generators)]
#![deny(unused_mut)]
fn ref_argument(ref _y: i32) {}
// #51801
fn mutable_upvar() {
let mut x = 0;
move || {
x = 1;
};
}
// #50897
fn generator_mutable_upvar() {
let mut x = 0;
move || {
x = 1;
yield;
};
}
// #51830
fn ref_closure_argument() {
let _ = Some(0).as_ref().map(|ref _a| true);
}
struct Expr {
attrs: Vec<u32>,
}
// #51904
fn parse_dot_or_call_expr_with(mut attrs: Vec<u32>) {
let x = Expr { attrs: vec![] };
Some(Some(x)).map(|expr|
expr.map(|mut expr| {
attrs.push(666);
expr.attrs = attrs;
expr
})
);
}
// Found when trying to bootstrap rustc
fn if_guard(x: Result<i32, i32>) {
match x {
Ok(mut r) | Err(mut r) if true => r = 1,
_ => (),
}
}
// #59620
fn nested_closures() {
let mut i = 0;
[].iter().for_each(|_: &i32| {
[].iter().for_each(move |_: &i32| {
i += 1;
});
});
}
fn main() {}
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