rust/src/test/run-pass/mir_match_arm_guard.rs

26 lines
836 B
Rust

// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// #30527 - We were not generating arms with guards in certain cases.
fn match_with_guard(x: Option<i8>) -> i8 {
match x {
Some(xyz) if xyz > 100 => 0,
Some(_) => -1,
None => -2
}
}
fn main() {
assert_eq!(match_with_guard(Some(111)), 0);
assert_eq!(match_with_guard(Some(2)), -1);
assert_eq!(match_with_guard(None), -2);
}