src/test/ui/moves/moves-based-on-type-cyclic-types-issue-4821.rs

   1 // Test for a subtle failure computing kinds of cyclic types, in which
   2 // temporary kinds wound up being stored in a cache and used later.
   3 // See rustc::ty::type_contents() for more information.
   4
   5
   6 struct List { key: isize, next: Option<Box<List>> }
   7
   8 fn foo(node: Box<List>) -> isize {
   9     let r = match node.next {
  10         Some(right) => consume(right),
  11         None => 0
  12     };
  13     consume(node) + r //~ ERROR use of partially moved value: `node`
  14 }
  15
  16 fn consume(v: Box<List>) -> isize {
  17     v.key
  18 }
  19
  20 fn main() {}