rust/tests/run-pass-valgrind/coerce-match.rs

// Check that coercions are propagated through match and if expressions.

//@ pretty-expanded FIXME #23616

pub fn main() {
    let _: Box<[isize]> = if true {
        let b: Box<_> = Box::new([1, 2, 3]);
        b
    } else {
        let b: Box<_> = Box::new([1]);
        b
    };

    let _: Box<[isize]> = match true {
        true => {
            let b: Box<_> = Box::new([1, 2, 3]);
            b
        }
        false => {
            let b: Box<_> = Box::new([1]);
            b
        }
    };

    // Check we don't get over-keen at propagating coercions in the case of casts.
    let x = if true { 42 } else { 42u8 } as u16;
    let x = match true {
        true => 42,
        false => 42u8,
    } as u16;
}