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document missing attributes in the reference #24502

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document missing attributes in the reference #24502

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12 changes: 11 additions & 1 deletion src/doc/reference.md
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Expand Up @@ -2177,6 +2177,14 @@ The following configurations must be defined by the implementation:
* `unix`. See `target_family`.
* `windows`. See `target_family`.

You can also set another attribute based on a `cfg` variable with `cfg_attr`:

```rust
#[cfg_attr(a, b)]
```

Will be the same as `#[b]` if `a` is set by `cfg`, and nothing otherwise.

### Lint check attributes

A lint check names a potentially undesirable coding pattern, such as
Expand Down Expand Up @@ -2444,7 +2452,9 @@ The currently implemented features of the reference compiler are:
* `simd_ffi` - Allows use of SIMD vectors in signatures for foreign functions.
The SIMD interface is subject to change.

* `staged_api` - Allows usage of stability markers and `#![staged_api]` in a crate
* `staged_api` - Allows usage of stability markers and `#![staged_api]` in a
crate. Stability markers are also attributes: `#[stable]`,
`#[unstable]`, and `#[deprecated]` are the three levels.

* `static_assert` - The `#[static_assert]` functionality is experimental and
unstable. The attribute can be attached to a `static` of
Expand Down