| error: recursion limit reached while expanding the macro `prob1` | |
| --> $DIR/issue-16098.rs:7:18 | |
| | | |
| LL | $n + prob1!($n - 1); | |
| | ^^^^^^^^^^^^^^ | |
| ... | |
| LL | println!("Problem 1: {}", prob1!(1000)); | |
| | ------------ in this macro invocation | |
| | | |
| = help: consider adding a `#![recursion_limit="256"]` attribute to your crate | |
| error: aborting due to previous error | |