diff options
Diffstat (limited to 'compiler/rustc_lint/src/builtin.rs')
| -rw-r--r-- | compiler/rustc_lint/src/builtin.rs | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs index 0b49e6562f9..c4acaef21dd 100644 --- a/compiler/rustc_lint/src/builtin.rs +++ b/compiler/rustc_lint/src/builtin.rs @@ -857,11 +857,10 @@ declare_lint! { /// ``` /// /// This syntax is now a hard error in the 2018 edition. In the 2015 - /// edition, this lint is "allow" by default, because the old code is - /// still valid, and warning for all old code can be noisy. This lint + /// edition, this lint is "warn" by default. This lint /// enables the [`cargo fix`] tool with the `--edition` flag to /// automatically transition old code from the 2015 edition to 2018. The - /// tool will switch this lint to "warn" and will automatically apply the + /// tool will run this lint and automatically apply the /// suggested fix from the compiler (which is to add `_` to each /// parameter). This provides a completely automated way to update old /// code for a new edition. See [issue #41686] for more details. @@ -869,7 +868,7 @@ declare_lint! { /// [issue #41686]: https://github.com/rust-lang/rust/issues/41686 /// [`cargo fix`]: https://doc.rust-lang.org/cargo/commands/cargo-fix.html pub ANONYMOUS_PARAMETERS, - Allow, + Warn, "detects anonymous parameters", @future_incompatible = FutureIncompatibleInfo { reference: "issue #41686 <https://github.com/rust-lang/rust/issues/41686>", @@ -884,6 +883,10 @@ declare_lint_pass!( impl EarlyLintPass for AnonymousParameters { fn check_trait_item(&mut self, cx: &EarlyContext<'_>, it: &ast::AssocItem) { + if cx.sess.edition() != Edition::Edition2015 { + // This is a hard error in future editions; avoid linting and erroring + return; + } if let ast::AssocItemKind::Fn(box FnKind(_, ref sig, _, _)) = it.kind { for arg in sig.decl.inputs.iter() { if let ast::PatKind::Ident(_, ident, None) = arg.pat.kind { |