error: cannot use a derive helper attribute through an import
- --> $DIR/derive-helper-shadowing.rs:40:15
+ --> $DIR/derive-helper-shadowing.rs:42:15
|
LL | #[renamed]
| ^^^^^^^
|
note: the derive helper attribute imported here
- --> $DIR/derive-helper-shadowing.rs:39:17
+ --> $DIR/derive-helper-shadowing.rs:41:17
|
LL | use empty_helper as renamed;
| ^^^^^^^^^^^^^^^^^^^^^^^
error: cannot find attribute `empty_helper` in this scope
- --> $DIR/derive-helper-shadowing.rs:36:22
+ --> $DIR/derive-helper-shadowing.rs:38:22
|
LL | #[derive(GenHelperUse)]
| ^^^^^^^^^^^^
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0659]: `empty_helper` is ambiguous (name vs any other name during import resolution)
- --> $DIR/derive-helper-shadowing.rs:24:13
+ --> $DIR/derive-helper-shadowing.rs:26:13
|
LL | use empty_helper;
| ^^^^^^^^^^^^ ambiguous name
|
note: `empty_helper` could refer to the derive helper attribute defined here
- --> $DIR/derive-helper-shadowing.rs:20:10
+ --> $DIR/derive-helper-shadowing.rs:22:10
|
LL | #[derive(Empty)]
| ^^^^^
| ^^^^^^^^^^^^ ambiguous name
|
note: `empty_helper` could refer to the derive helper attribute defined here
- --> $DIR/derive-helper-shadowing.rs:20:10
+ --> $DIR/derive-helper-shadowing.rs:22:10
|
LL | #[derive(Empty)]
| ^^^^^
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= help: use `crate::empty_helper` to refer to this attribute macro unambiguously
-error: aborting due to 5 previous errors
+warning: derive helper attribute is used before it is introduced
+ --> $DIR/derive-helper-shadowing.rs:19:3
+ |
+LL | #[empty_helper]
+ | ^^^^^^^^^^^^
+...
+LL | #[derive(Empty)]
+ | ----- the attribute is introduced here
+ |
+ = note: `#[warn(legacy_derive_helpers)]` on by default
+ = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+ = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
+
+error: aborting due to 5 previous errors; 1 warning emitted
For more information about this error, try `rustc --explain E0659`.