Lint elided lifetimes in path on the AST.

2 files changed, 22 insertions, 1 deletions

diff --git a/compiler/rustc_lint/src/context.rs b/compiler/rustc_lint/src/context.rs
index 3600b6ad212..152c53dac7f 100644
--- a/compiler/rustc_lint/src/context.rs
+++ b/compiler/rustc_lint/src/context.rs
@@ -21,7 +21,8 @@ use crate::passes::{EarlyLintPassObject, LateLintPassObject};
 use rustc_ast::util::unicode::TEXT_FLOW_CONTROL_CHARS;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::sync;
-use rustc_errors::{struct_span_err, Applicability, MultiSpan, SuggestionStyle};
+use rustc_errors::{add_elided_lifetime_in_path_suggestion, struct_span_err};
+use rustc_errors::{Applicability, MultiSpan, SuggestionStyle};
 use rustc_hir as hir;
 use rustc_hir::def::Res;
 use rustc_hir::def_id::{CrateNum, DefId};
@@ -665,6 +666,21 @@ pub trait LintContext: Sized {
                 ) => {
                     db.span_note(span_def, "the macro is defined here");
                 }
+                BuiltinLintDiagnostics::ElidedLifetimesInPaths(
+                    n,
+                    path_span,
+                    incl_angl_brckt,
+                    insertion_span,
+                ) => {
+                    add_elided_lifetime_in_path_suggestion(
+                        sess.source_map(),
+                        &mut db,
+                        n,
+                        path_span,
+                        incl_angl_brckt,
+                        insertion_span,
+                    );
+                }
                 BuiltinLintDiagnostics::UnknownCrateTypes(span, note, sugg) => {
                     db.span_suggestion(span, &note, sugg, Applicability::MaybeIncorrect);
                 }
diff --git a/compiler/rustc_lint/src/early.rs b/compiler/rustc_lint/src/early.rs
index e7855f8057c..b4262f184c8 100644
--- a/compiler/rustc_lint/src/early.rs
+++ b/compiler/rustc_lint/src/early.rs
@@ -284,6 +284,11 @@ impl<'a, T: EarlyLintPass> ast_visit::Visitor<'a> for EarlyContextAndPass<'a, T>
         ast_visit::walk_path(self, p);
     }
 
+    fn visit_path_segment(&mut self, path_span: Span, s: &'a ast::PathSegment) {
+        self.check_id(s.id);
+        ast_visit::walk_path_segment(self, path_span, s);
+    }
+
     fn visit_attribute(&mut self, attr: &'a ast::Attribute) {
         run_early_pass!(self, check_attribute, attr);
     }