// run-pass // aux-build:specialization_cross_crate.rs #![feature(specialization)] //~ WARN the feature `specialization` is incomplete extern crate specialization_cross_crate; use specialization_cross_crate::*; struct NotClone; #[derive(Clone)] struct MarkedAndClone; impl MyMarker for MarkedAndClone {} struct MyType(#[allow(unused_tuple_struct_fields)] T); impl Foo for MyType { default fn foo(&self) -> &'static str { "generic MyType" } } impl Foo for MyType { fn foo(&self) -> &'static str { "MyType" } } struct MyOtherType; impl Foo for MyOtherType {} fn main() { assert!(NotClone.foo() == "generic"); assert!(0u8.foo() == "generic Clone"); assert!(vec![NotClone].foo() == "generic"); assert!(vec![0u8].foo() == "generic Vec"); assert!(vec![0i32].foo() == "Vec"); assert!(0i32.foo() == "i32"); assert!(String::new().foo() == "String"); assert!(((), 0).foo() == "generic pair"); assert!(((), ()).foo() == "generic uniform pair"); assert!((0u8, 0u32).foo() == "(u8, u32)"); assert!((0u8, 0u8).foo() == "(u8, u8)"); assert!(MarkedAndClone.foo() == "generic Clone + MyMarker"); assert!(MyType(()).foo() == "generic MyType"); assert!(MyType(0u8).foo() == "MyType"); assert!(MyOtherType.foo() == "generic"); }