mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 06:51:58 +00:00
21 lines
481 B
Rust
21 lines
481 B
Rust
// Check that or patterns are lowered correctly in `if let` and `while let` expressions.
|
|
// run-pass
|
|
|
|
fn main() {
|
|
let mut opt = Some(3);
|
|
let mut w = Vec::new();
|
|
while let Some(ref mut val @ (3 | 4 | 6)) = opt {
|
|
w.push(*val);
|
|
*val += 1;
|
|
}
|
|
assert_eq!(w, [3, 4]);
|
|
if let &(None | Some(6 | 7)) = &opt {
|
|
unreachable!();
|
|
}
|
|
if let Some(x @ (4 | 5 | 6)) = opt {
|
|
assert_eq!(x, 5);
|
|
} else {
|
|
unreachable!();
|
|
}
|
|
}
|