]>
Commit | Line | Data |
---|---|---|
6a06907d XL |
1 | The `issue` value is incorrect in a stability attribute. |
2 | ||
3 | Erroneous code example: | |
4 | ||
5 | ```compile_fail,E0545 | |
6 | #![feature(staged_api)] | |
7 | #![stable(since = "1.0.0", feature = "test")] | |
8 | ||
9 | #[unstable(feature = "_unstable_fn", issue = "0")] // invalid | |
10 | fn _unstable_fn() {} | |
11 | ||
12 | #[rustc_const_unstable(feature = "_unstable_const_fn", issue = "0")] // invalid | |
136023e0 | 13 | const fn _unstable_const_fn() {} |
6a06907d XL |
14 | ``` |
15 | ||
16 | To fix this issue, you need to provide a correct value in the `issue` field. | |
17 | Example: | |
18 | ||
19 | ``` | |
20 | #![feature(staged_api)] | |
21 | #![stable(since = "1.0.0", feature = "test")] | |
22 | ||
23 | #[unstable(feature = "_unstable_fn", issue = "none")] // ok! | |
24 | fn _unstable_fn() {} | |
25 | ||
26 | #[rustc_const_unstable(feature = "_unstable_const_fn", issue = "1")] // ok! | |
136023e0 | 27 | const fn _unstable_const_fn() {} |
6a06907d XL |
28 | ``` |
29 | ||
30 | See the [How Rust is Made and “Nightly Rust”][how-rust-made-nightly] appendix | |
31 | of the Book and the [Stability attributes][stability-attributes] section of the | |
32 | Rustc Dev Guide for more details. | |
33 | ||
34 | [how-rust-made-nightly]: https://doc.rust-lang.org/book/appendix-07-nightly-rust.html | |
35 | [stability-attributes]: https://rustc-dev-guide.rust-lang.org/stability.html |