error[E0603]: macro `mac` is private --> $DIR/decl-macro.rs:8:8 | LL | m::mac!(); | ^^^ private macro | note: the macro `mac` is defined here --> $DIR/decl-macro.rs:4:5 | LL | macro mac() {} | ^^^^^^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0603`.