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#[must_use] on traits also affects trait objects #1203

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May 5, 2022
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#[must_use] on traits also affects trait objects #1203

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3 changes: 2 additions & 1 deletion src/attributes/diagnostics.md
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Expand Up @@ -236,7 +236,7 @@ five();
```

When used on a [trait declaration], a [call expression] of an [expression
statement] to a function that returns an [impl trait] of that trait violates
statement] to a function that returns an [impl trait] or a [dyn trait] of that trait violates
the `unused_must_use` lint.

```rust
Expand Down Expand Up @@ -309,6 +309,7 @@ When used on a function in a trait implementation, the attribute does nothing.
[attributes]: ../attributes.md
[block expression]: ../expressions/block-expr.md
[call expression]: ../expressions/call-expr.md
[dyn trait]: ../types/trait-object.md
[enum variant]: ../items/enumerations.md
[enum]: ../items/enumerations.md
[expression statement]: ../statements.md#expression-statements
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