| warning: struct `S` is never constructed | |
| --> $DIR/macro-span-replacement.rs:12:8 | |
| | | |
| LL | m!(S struct); | |
| | ^ | |
| | | |
| note: the lint level is defined here | |
| --> $DIR/macro-span-replacement.rs:3:9 | |
| | | |
| LL | #![warn(unused)] | |
| | ^^^^^^ | |
| = note: `#[warn(dead_code)]` implied by `#[warn(unused)]` | |
| = note: this warning originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info) | |
| warning: 1 warning emitted | |