src/test/ui/consts/const-pattern-not-const-evaluable.rs

   1 // build-pass (FIXME(62277): could be check-pass?)
   2
   3 #[derive(PartialEq, Eq)]
   4 enum Cake {
   5     BlackForest,
   6     Marmor,
   7 }
   8 use Cake::*;
   9
  10 struct Pair<A, B>(A, B);
  11
  12 const BOO: Pair<Cake, Cake> = Pair(Marmor, BlackForest);
  13 const FOO: Cake = BOO.1;
  14
  15 const fn foo() -> Cake {
  16     Marmor
  17 }
  18
  19 const WORKS: Cake = Marmor;
  20
  21 const GOO: Cake = foo();
  22
  23 fn main() {
  24     match BlackForest {
  25         FOO => println!("hi"),
  26         GOO => println!("meh"),
  27         WORKS => println!("möp"),
  28         _ => println!("bye"),
  29     }
  30 }