mirror of https://github.com/rust-lang/rust
75 lines
2.6 KiB
Plaintext
75 lines
2.6 KiB
Plaintext
error: cannot use a derive helper attribute through an import
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--> $DIR/derive-helper-shadowing.rs:42:15
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LL | #[renamed]
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| ^^^^^^^
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note: the derive helper attribute imported here
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--> $DIR/derive-helper-shadowing.rs:41:17
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LL | use empty_helper as renamed;
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| ^^^^^^^^^^^^^^^^^^^^^^^
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error: cannot find attribute `empty_helper` in this scope
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--> $DIR/derive-helper-shadowing.rs:38:22
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LL | #[derive(GenHelperUse)]
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| ^^^^^^^^^^^^
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= note: this error originates in the derive macro `GenHelperUse` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider importing this attribute macro through its public re-export
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LL + use empty_helper;
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error: cannot find attribute `empty_helper` in this scope
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--> $DIR/derive-helper-shadowing.rs:14:11
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LL | #[empty_helper]
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| ^^^^^^^^^^^^
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...
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LL | gen_helper_use!();
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| ----------------- in this macro invocation
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= note: this error originates in the macro `gen_helper_use` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider importing this attribute macro through its public re-export
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LL + use crate::empty_helper;
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error[E0659]: `empty_helper` is ambiguous
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--> $DIR/derive-helper-shadowing.rs:19:3
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LL | #[empty_helper]
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| ^^^^^^^^^^^^ ambiguous name
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= note: ambiguous because of a name conflict with a derive helper attribute
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note: `empty_helper` could refer to the derive helper attribute defined here
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--> $DIR/derive-helper-shadowing.rs:22:10
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LL | #[derive(Empty)]
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| ^^^^^
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note: `empty_helper` could also refer to the attribute macro imported here
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--> $DIR/derive-helper-shadowing.rs:10:5
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LL | use test_macros::empty_attr as empty_helper;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= help: use `crate::empty_helper` to refer to this attribute macro unambiguously
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warning: derive helper attribute is used before it is introduced
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--> $DIR/derive-helper-shadowing.rs:19:3
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LL | #[empty_helper]
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| ^^^^^^^^^^^^
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...
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LL | #[derive(Empty)]
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| ----- the attribute is introduced here
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
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= note: `#[warn(legacy_derive_helpers)]` on by default
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error: aborting due to 4 previous errors; 1 warning emitted
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For more information about this error, try `rustc --explain E0659`.
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