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// run-pass
#![feature(box_syntax)]
fn match_on_local() {
let mut foo: Option<Box<_>> = Some(box 5);
match foo {
None => {},
Some(x) => {
foo = Some(x);
}
}
println!("'{}'", foo.unwrap());
}
fn match_on_arg(mut foo: Option<Box<i32>>) {
match foo {
None => {}
Some(x) => {
foo = Some(x);
}
}
println!("'{}'", foo.unwrap());
}
fn match_on_binding() {
match Some(Box::new(7)) {
mut foo => {
match foo {
None => {},
Some(x) => {
foo = Some(x);
}
}
println!("'{}'", foo.unwrap());
}
}
}
fn match_on_upvar() {
let mut foo: Option<Box<_>> = Some(box 8);
let f = move|| {
match foo {
None => {},
Some(x) => {
foo = Some(x);
}
}
println!("'{}'", foo.unwrap());
};
f();
}
fn main() {
match_on_local();
match_on_arg(Some(box 6));
match_on_binding();
match_on_upvar();
}
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