//@ run-pass //@ aux-build:modify-ast.rs extern crate modify_ast; use modify_ast::*; #[derive(Foo)] pub struct MyStructc { #[cfg_attr(FALSE, foo)] _a: i32, } macro_rules! a { ($i:item) => ($i) } a! { #[assert1] pub fn foo() {} } fn main() { let _a = MyStructc { _a: 0 }; foo(); }