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

32 lines
725 B
Rust

// 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;
}