1 error: unexpected end of macro invocation
2 --> $DIR/empty-comment.rs:10:5
4 LL | macro_rules! one_arg_macro {
5 | -------------------------- when calling this macro
7 LL | one_arg_macro!(/**/);
8 | ^^^^^^^^^^^^^^^^^^^^ missing tokens in macro arguments
10 note: while trying to match meta-variable `$fmt:expr`
11 --> $DIR/empty-comment.rs:6:6
13 LL | ($fmt:expr) => (print!(concat!($fmt, "\n")));
16 error: aborting due to previous error