src/test/ui/proc-macro/attribute-order-restricted.rs

// aux-build:test-macros.rs

#[macro_use]
extern crate test_macros;

#[identity_attr] // OK
#[derive(Clone)]
struct Before;

#[derive(Clone)]
#[identity_attr] //~ ERROR macro attributes must be placed before `#[derive]`
struct After;

fn main() {}