rust/tests/ui/mir/simplify-branch-same.rs

22 lines
445 B
Rust

// Regression test for SimplifyBranchSame miscompilation.
//@ run-pass
macro_rules! m {
($a:expr, $b:expr, $c:block) => {
match $a {
Lto::Fat | Lto::Thin => { $b; (); $c }
Lto::No => { $b; () }
}
}
}
pub enum Lto { No, Thin, Fat }
fn f(mut cookie: u32, lto: Lto) -> u32 {
let mut _a = false;
m!(lto, _a = true, {cookie = 0});
cookie
}
fn main() { assert_eq!(f(42, Lto::Thin), 0) }