#![crate_type = "lib"] #[repr(C)] pub struct TestStruct { pub x: u8, pub y: T, } pub extern "C" fn foo(ts: TestStruct) -> T { ts.y } #[link(name = "test", kind = "static")] extern "C" { pub fn call(c: extern "C" fn(TestStruct) -> i32) -> i32; }