Feature gate: #![feature(deprecated_suggestion)]

This is a tracking issue for suggested replacements on deprecations. This has been used as part of the #[rustc_deprecated] attribute since 2019-01-31. The suggestions are machine-applicable, in that cargo fix is capable of making the replacement without further user intervention. As such, the suggestion must be valid Rust (though this is not enforced).

Public API

#![feature(deprecated_suggestion)]

struct Foo;

impl Foo {
    #[deprecated(suggestion = "baz")]
    fn bar() {}
    fn baz() {}
}

Steps / History

• Implementation:
  • for #[rustc_deprecated] in Add suggestions to deprecation lints #58002 (merged 2019-01-31)
  • for #[deprecated] in Merge #[deprecated] and #[rustc_deprecated] #94635 (merged 2022-03-10)
• Final comment period (FCP)
• Stabilization PR

Unresolved Questions

• None yet.