1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
//@ run-pass //@ proc-macro: attr-on-trait.rs //@ ignore-backends: gcc extern crate attr_on_trait; use attr_on_trait::foo; trait Foo { #[foo] fn foo() {} } impl Foo for i32 { fn foo(&self) {} } fn main() { 3i32.foo(); }