Rollup merge of #129207 - GrigorenkoPV:elided-is-named, r=cjgillot

Lint that warns when an elided lifetime ends up being a named lifetime

As suggested in https://github.com/rust-lang/rust/issues/48686#issuecomment-1817334575

Fixes #48686

compiler/rustc_lint/src/context/diagnostics.rs

@@ -10,6 +10,7 @@ use rustc_errors::{
 use rustc_middle::middle::stability;
 use rustc_session::lint::BuiltinLintDiag;
 use rustc_session::Session;
+use rustc_span::symbol::kw;
 use rustc_span::BytePos;
 use tracing::debug;
 
@@ -441,5 +442,17 @@ pub(super) fn decorate_lint(sess: &Session, diagnostic: BuiltinLintDiag, diag: &
         BuiltinLintDiag::UnexpectedBuiltinCfg { cfg, cfg_name, controlled_by } => {
             lints::UnexpectedBuiltinCfg { cfg, cfg_name, controlled_by }.decorate_lint(diag)
         }
+        BuiltinLintDiag::ElidedIsStatic { elided } => {
+            lints::ElidedNamedLifetime { elided, name: kw::StaticLifetime, named_declaration: None }
+                .decorate_lint(diag)
+        }
+        BuiltinLintDiag::ElidedIsParam { elided, param: (param_name, param_span) } => {
+            lints::ElidedNamedLifetime {
+                elided,
+                name: param_name,
+                named_declaration: Some(param_span),
+            }
+            .decorate_lint(diag)
+        }
     }
 }

compiler/rustc_lint/src/lints.rs

@@ -2611,6 +2611,16 @@ pub(crate) struct ElidedLifetimesInPaths {
     pub subdiag: ElidedLifetimeInPathSubdiag,
 }
 
+#[derive(LintDiagnostic)]
+#[diag(lint_elided_named_lifetime)]
+pub(crate) struct ElidedNamedLifetime {
+    #[label(lint_label_elided)]
+    pub elided: Span,
+    pub name: Symbol,
+    #[label(lint_label_named)]
+    pub named_declaration: Option<Span>,
+}
+
 #[derive(LintDiagnostic)]
 #[diag(lint_invalid_crate_type_value)]
 pub(crate) struct UnknownCrateTypes {