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Suppress type length limit test and note that it is not enforced #1527

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merged 2 commits into from
Jul 15, 2024
Merged

Suppress type length limit test and note that it is not enforced #1527

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098ba7f
Suppress type length limit test and note that it is not enforced
compiler-errors Jul 14, 2024
509c06e
Don't use admonition syntax.
ehuss Jul 15, 2024
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Suppress type length limit test and note that it is not enforced
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@compiler-errors
compiler-errors committed Jul 14, 2024
commit 098ba7f86ec18efe9d7936b8742dabf889ce45cd
8 changes: 7 additions & 1 deletion src/attributes/limits.md
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Expand Up @@ -35,14 35,20 @@ a!{}

## The `type_length_limit` attribute

> [!NOTE]
> This limit is only enforced when the nightly `-Zenforce-type-length-limit`
> flag is active.
>
> For more information, see <https://github.com/rust-lang/rust/pull/127670>.

The *`type_length_limit` attribute* limits the maximum number of type
substitutions made when constructing a concrete type during monomorphization.
It is applied at the [crate] level, and uses the [_MetaNameValueStr_] syntax
to set the limit based on the number of type substitutions.

> Note: The default in `rustc` is 1048576.

```rust,compile_fail
```rust,ignore
#![type_length_limit = "4"]

fn f<T>(x: T) {}
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