| error: constant of non-structural type `Vec<u8>` in a pattern |
| --> $DIR/issue-115599.rs:5:12 |
| | |
| LL | const CONST_STRING: String = String::new(); |
| | -------------------------- constant defined here |
| ... |
| LL | if let CONST_STRING = empty_str {} |
| | ^^^^^^^^^^^^ constant of non-structural type |
| --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL |
| | |
| = note: `Vec<u8>` must be annotated with `#[derive(PartialEq)]` to be usable in patterns |
| | |
| = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details |
| |
| error: aborting due to 1 previous error |
| |