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bors merged 3 commits into from
Feb 7, 2021
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Improve long explanation for E0546 #81835

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Improve long explanation for E0546
jesusprubio Feb 6, 2021
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jesusprubio Feb 6, 2021
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jesusprubio Feb 6, 2021
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11 changes: 9 additions & 2 deletions compiler/rustc_error_codes/src/error_codes/E0546.md
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
A feature name is missing.
The `feature` value is missing in a stability attribute.

Erroneous code example:

Expand All @@ -13,7 +13,7 @@ fn unstable_fn() {}
fn stable_fn() {}
```

To fix the issue you need to provide a feature name.
To fix the issue you need to provide the `feature` field.

```
#![feature(staged_api)]
Expand All @@ -25,3 +25,10 @@ fn unstable_fn() {}
#[stable(feature = "stable_fn", since = "1.0.0")] // ok!
fn stable_fn() {}
```

See the [How Rust is Made and “Nightly Rust”][how-rust-made-nightly] appendix
of the Book and the [Stability attributes][stability-attributes] section of the
Rustc Dev Guide for more details.

[how-rust-made-nightly]: https://doc.rust-lang.org/book/appendix-07-nightly-rust.html
[stability-attributes]: https://rustc-dev-guide.rust-lang.org/stability.html