1ea88969fSopenharmony_ciThis test was adapted from [`proc-macro-hack` repository](https://github.com/dtolnay/proc-macro-hack), 2ea88969fSopenharmony_cispecifically `demo-hack` and `demo-hack-impl` directories. All the credits due to the corresponding authors, [`@dtolnay`](https://github.com/dtolnay) in particular. 3