| // compile-flags:--test |
| |
| // comments, both doc comments and regular ones, used to trick rustdoc's doctest parser into |
| // thinking that everything after it was part of the regular program. combined with the librustc_ast |
| // parser loop failing to detect the manual main function, it would wrap everything in `fn main`, |
| // which would cause the doctest to fail as the "extern crate" declaration was no longer valid. |
| // oddly enough, it would pass in 2018 if a crate was in the extern prelude. see |
| // https://github.com/rust-lang/rust/issues/56727 |
| |
| //! ``` |
| //! // crate: proc-macro-test |
| //! //! this is a test |
| //! |
| //! // used to pull in proc-macro specific items |
| //! extern crate proc_macro; |
| //! |
| //! use proc_macro::TokenStream; |
| //! |
| //! # fn main() {} |
| //! ``` |
