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Update that macros can be deprecated. #813

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May 16, 2020
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Update that macros can be deprecated. #813

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14 changes: 8 additions & 6 deletions src/attributes/diagnostics.md
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Expand Up @@ -124,12 +124,13 @@ The `deprecated` attribute has several forms:
deprecation and preferred alternatives.

The `deprecated` attribute may be applied to any [item], [trait item], [enum
variant], [struct field], or [external block item]. It cannot be applied to [trait
implementation items]. When applied to an item containing other items, such as
a [module] or [implementation], all child items inherit the deprecation attribute.
<!-- NOTE: Currently broken for macros, see https://github.com/rust-lang/rust/issues/49912
Also, it is only rejected for trait impl items (AnnotationKind::Prohibited). In all
other locations, it is silently ignored. Tuple struct fields are ignored.
variant], [struct field], [external block item], or [macro definition]. It
cannot be applied to [trait implementation items]. When applied to an item
containing other items, such as a [module] or [implementation], all child
items inherit the deprecation attribute.
<!-- NOTE: It is only rejected for trait impl items
(AnnotationKind::Prohibited). In all other locations, it is silently ignored.
Tuple struct fields are ignored.
-->

Here is an example:
Expand Down Expand Up @@ -270,6 +271,7 @@ When used on a function in a trait implementation, the attribute does nothing.
[implementation]: ../items/implementations.md
[item]: ../items.md
[let statement]: ../statements.md#let-statements
[macro definition]: ../macros-by-example.md
[module]: ../items/modules.md
[rustc book]: ../../rustc/lints/index.html
[struct field]: ../items/structs.md
Expand Down