src/test/ui/issues/issue-46069.rs

   1 // run-pass
   2 use std::iter::{Fuse, Cloned};
   3 use std::slice::Iter;
   4
   5 struct Foo<'a, T: 'a>(#[allow(unused_tuple_struct_fields)] &'a T);
   6 impl<'a, T: 'a> Copy for Foo<'a, T> {}
   7 impl<'a, T: 'a> Clone for Foo<'a, T> {
   8     fn clone(&self) -> Self { *self }
   9 }
  10
  11 fn copy_ex() {
  12     let s = 2;
  13     let k1 = || s;
  14     let upvar = Foo(&k1);
  15     let k = || upvar;
  16     k();
  17 }
  18
  19 fn main() {
  20     let _f: *mut <Fuse<Cloned<Iter<u8>>> as Iterator>::Item = std::ptr::null_mut();
  21
  22     copy_ex();
  23 }