src/test/ui/issues/issue-16098.stderr

   1 error: recursion limit reached while expanding `prob1!`
   2   --> $DIR/issue-16098.rs:7:18
   3    |
   4 LL |             $n + prob1!($n - 1);
   5    |                  ^^^^^^^^^^^^^^
   6 ...
   7 LL |     println!("Problem 1: {}", prob1!(1000));
   8    |                               ------------ in this macro invocation
   9    |
  10    = help: consider adding a `#![recursion_limit="256"]` attribute to your crate
  11
  12 error: aborting due to previous error
  13