src/test/ui/mir/simplify-branch-same.rs

   1 // Regression test for SimplifyBranchSame miscompilation.
   2 // run-pass
   3
   4 macro_rules! m {
   5     ($a:expr, $b:expr, $c:block) => {
   6         match $a {
   7             Lto::Fat | Lto::Thin => { $b; (); $c }
   8             Lto::No => { $b; () }
   9         }
  10     }
  11 }
  12
  13 pub enum Lto { No, Thin, Fat }
  14
  15 fn f(mut cookie: u32, lto: Lto) -> u32 {
  16     let mut _a = false;
  17     m!(lto, _a = true, {cookie = 0});
  18     cookie
  19 }
  20
  21 fn main() { assert_eq!(f(42, Lto::Thin), 0) }