1 #[repr(C)]
2 pub struct Foo<T> {
3     something: *const i32,
4     phantom: std::marker::PhantomData<T>,
5 }
6 
7 #[repr(C)]
8 pub union Bar {
9     something: i32,
10     subexpressions: Foo<Self>,
11 }
12 
13 #[no_mangle]
root(b: Bar)14 pub extern "C" fn root(b: Bar) {}
15