2 // compile-flags: -Zpolymorphize=on -Zsymbol-mangling-version=v0
4 pub(crate) struct Foo<'a, I, E>(I, &'a E);
6 impl<'a, I, T: 'a, E> Iterator for Foo<'a, I, E>
8 I: Iterator<Item = &'a (T, E)>,
12 fn next(&mut self) -> Option<Self::Item> {
18 let mut a = Foo([(1u32, 1u16)].iter(), &1u16);
19 let mut b = Foo([(1u16, 1u32)].iter(), &1u32);