1 #![feature(intrinsics)] 2 3 trait Foo { foo(&self)4 extern "rust-intrinsic" fn foo(&self); //~ ERROR intrinsic must 5 } 6 7 impl Foo for () { foo(&self)8 extern "rust-intrinsic" fn foo(&self) { //~ ERROR intrinsic must 9 } 10 } 11 hello()12extern "rust-intrinsic" fn hello() {//~ ERROR intrinsic must 13 } 14 main()15fn main() { 16 } 17