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|
// Tests using a combination of pattern features has the expected borrow checking behavior
#![feature(box_patterns)]
enum Test {
Foo,
Bar,
_Baz,
}
// bindings_after_at + slice_patterns
fn bindings_after_at_slice_patterns_move_binding(x: [String; 4]) {
match x {
a @ [.., _] => (),
_ => (),
};
&x;
//~^ ERROR borrow of moved value
}
fn bindings_after_at_slice_patterns_borrows_binding_mut(mut x: [String; 4]) {
let r = match x {
ref mut foo @ [.., _] => Some(foo),
_ => None,
};
&x;
//~^ ERROR cannot borrow
drop(r);
}
fn bindings_after_at_slice_patterns_borrows_slice_mut1(mut x: [String; 4]) {
let r = match x {
ref foo @ [.., ref mut bar] => (),
//~^ ERROR cannot borrow
_ => (),
};
drop(r);
}
fn bindings_after_at_slice_patterns_borrows_slice_mut2(mut x: [String; 4]) {
let r = match x {
[ref foo @ .., ref bar] => Some(foo),
_ => None,
};
&mut x;
//~^ ERROR cannot borrow
drop(r);
}
fn bindings_after_at_slice_patterns_borrows_both(mut x: [String; 4]) {
let r = match x {
ref foo @ [.., ref bar] => Some(foo),
_ => None,
};
&mut x;
//~^ ERROR cannot borrow
drop(r);
}
// bindings_after_at + or_patterns
fn bindings_after_at_or_patterns_move(x: Option<Test>) {
match x {
foo @ Some(Test::Foo | Test::Bar) => (),
_ => (),
}
&x;
//~^ ERROR borrow of moved value
}
fn bindings_after_at_or_patterns_borrows(mut x: Option<Test>) {
let r = match x {
ref foo @ Some(Test::Foo | Test::Bar) => Some(foo),
_ => None,
};
&mut x;
//~^ ERROR cannot borrow
drop(r);
}
fn bindings_after_at_or_patterns_borrows_mut(mut x: Option<Test>) {
let r = match x {
ref mut foo @ Some(Test::Foo | Test::Bar) => Some(foo),
_ => None,
};
&x;
//~^ ERROR cannot borrow
drop(r);
}
// bindings_after_at + box_patterns
fn bindings_after_at_box_patterns_borrows_both(mut x: Option<Box<String>>) {
let r = match x {
ref foo @ Some(box ref s) => Some(foo),
_ => None,
};
&mut x;
//~^ ERROR cannot borrow
drop(r);
}
fn bindings_after_at_box_patterns_borrows_mut(mut x: Option<Box<String>>) {
match x {
ref foo @ Some(box ref mut s) => (),
//~^ ERROR cannot borrow
_ => (),
};
}
// bindings_after_at + slice_patterns + or_patterns
fn bindings_after_at_slice_patterns_or_patterns_moves(x: [Option<Test>; 4]) {
match x {
a @ [.., Some(Test::Foo | Test::Bar)] => (),
_ => (),
};
&x;
//~^ ERROR borrow of moved value
}
fn bindings_after_at_slice_patterns_or_patterns_borrows_binding(mut x: [Option<Test>; 4]) {
let r = match x {
ref a @ [ref b @ .., Some(Test::Foo | Test::Bar)] => Some(a),
_ => None,
};
&mut x;
//~^ ERROR cannot borrow
drop(r);
}
fn bindings_after_at_slice_patterns_or_patterns_borrows_slice(mut x: [Option<Test>; 4]) {
let r = match x {
ref a @ [ref b @ .., Some(Test::Foo | Test::Bar)] => Some(b),
_ => None,
};
&mut x;
//~^ ERROR cannot borrow
drop(r);
}
// bindings_after_at + slice_patterns + box_patterns
fn bindings_after_at_slice_patterns_box_patterns_borrows(mut x: [Option<Box<String>>; 4]) {
let r = match x {
[_, ref a @ Some(box ref b), ..] => Some(a),
_ => None,
};
&mut x;
//~^ ERROR cannot borrow
drop(r);
}
// bindings_after_at + slice_patterns + or_patterns + box_patterns
fn bindings_after_at_slice_patterns_or_patterns_box_patterns_borrows(
mut x: [Option<Box<Test>>; 4]
) {
let r = match x {
[_, ref a @ Some(box Test::Foo | box Test::Bar), ..] => Some(a),
_ => None,
};
&mut x;
//~^ ERROR cannot borrow
drop(r);
}
fn bindings_after_at_slice_patterns_or_patterns_box_patterns_borrows_mut(
mut x: [Option<Box<Test>>; 4]
) {
let r = match x {
[_, ref mut a @ Some(box Test::Foo | box Test::Bar), ..] => Some(a),
_ => None,
};
&x;
//~^ ERROR cannot borrow
drop(r);
}
fn bindings_after_at_slice_patterns_or_patterns_box_patterns_borrows_binding(
mut x: [Option<Box<Test>>; 4]
) {
let r = match x {
ref a @ [_, ref b @ Some(box Test::Foo | box Test::Bar), ..] => Some(a),
_ => None,
};
&mut x;
//~^ ERROR cannot borrow
drop(r);
}
fn main() {}
|
