| /// borked doc comment on the first line. doesn't combust! | |
| //~^ four_forward_slashes | |
| fn a() {} | |
| // This test's entire purpose is to make sure we don't panic if the comment with four slashes | |
| // extends to the first line of the file. This is likely pretty rare in production, but an ICE is an | |
| // ICE. |