rust/tests/ui/rfcs/rfc-2632-const-trait-impl/const_derives/derive-const-gate.stderr

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2022-09-20 06:55:07 -05:00
error[E0658]: use of unstable library feature 'derive_const'
--> $DIR/derive-const-gate.rs:1:3
|
LL | #[derive_const(Default)]
| ^^^^^^^^^^^^
|
= help: add `#![feature(derive_const)]` to the crate attributes to enable
2023-04-16 06:12:37 -05:00
error: const `impl` for trait `Default` which is not marked with `#[const_trait]`
--> $DIR/derive-const-gate.rs:1:16
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LL | #[derive_const(Default)]
| ^^^^^^^
|
= note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
= note: adding a non-const method body in the future would be a breaking change
= note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 2 previous errors
2022-09-20 06:55:07 -05:00
For more information about this error, try `rustc --explain E0658`.