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// Check that closure captures for slice patterns are inferred correctly
#![allow(unused_variables)]
#![allow(dropping_references)]
// run-pass
fn arr_by_ref(x: [String; 3]) {
let r = &x;
let f = || {
let [ref y, ref z @ ..] = x;
};
f();
f();
// Ensure `x` was borrowed
drop(r);
// Ensure that `x` wasn't moved from.
drop(x);
}
fn arr_by_mut(mut x: [String; 3]) {
let mut f = || {
let [ref mut y, ref mut z @ ..] = x;
};
f();
f();
drop(x);
}
fn arr_by_move(x: [String; 3]) {
let f = || {
let [y, z @ ..] = x;
};
f();
}
fn arr_ref_by_ref(x: &[String; 3]) {
let r = &x;
let f = || {
let [ref y, ref z @ ..] = *x;
};
let g = || {
let [y, z @ ..] = x;
};
f();
g();
f();
g();
drop(r);
drop(x);
}
fn arr_ref_by_mut(x: &mut [String; 3]) {
let mut f = || {
let [ref mut y, ref mut z @ ..] = *x;
};
f();
f();
let mut g = || {
let [y, z @ ..] = x;
// Ensure binding mode was chosen correctly:
std::mem::swap(y, &mut z[0]);
};
g();
g();
drop(x);
}
fn arr_box_by_move(x: Box<[String; 3]>) {
let f = || {
let [y, z @ ..] = *x;
};
f();
}
fn slice_by_ref(x: &[String]) {
let r = &x;
let f = || {
if let [ref y, ref z @ ..] = *x {}
};
let g = || {
if let [y, z @ ..] = x {}
};
f();
g();
f();
g();
drop(r);
drop(x);
}
fn slice_by_mut(x: &mut [String]) {
let mut f = || {
if let [ref mut y, ref mut z @ ..] = *x {}
};
f();
f();
let mut g = || {
if let [y, z @ ..] = x {
// Ensure binding mode was chosen correctly:
std::mem::swap(y, &mut z[0]);
}
};
g();
g();
drop(x);
}
fn main() {
arr_by_ref(Default::default());
arr_by_mut(Default::default());
arr_by_move(Default::default());
arr_ref_by_ref(&Default::default());
arr_ref_by_mut(&mut Default::default());
arr_box_by_move(Default::default());
slice_by_ref(&<[_; 3]>::default());
slice_by_mut(&mut <[_; 3]>::default());
}
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