#![warn(missing_fragment_specifier)] macro_rules! used_arm { ( $( any_token $field_rust_type )* ) => {}; //~^ ERROR missing fragment //~| WARN missing fragment //~| WARN this was previously accepted } macro_rules! used_macro_unused_arm { () => {}; ( $name ) => {}; //~^ WARN missing fragment //~| WARN this was previously accepted } macro_rules! unused_macro { ( $name ) => {}; //~^ WARN missing fragment //~| WARN this was previously accepted } fn main() { used_arm!(); used_macro_unused_arm!(); }