Use a dedicated type instead of a reference for the diagnostic context

This paves the way for tracking more state (e.g. error tainting) in the diagnostic context handle

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_resolve/src/diagnostics.rs b/compiler/rustc_resolve/src/diagnostics.rs
index 8d470c6c61e..659a0f368fb 100644
--- a/compiler/rustc_resolve/src/diagnostics.rs
+++ b/compiler/rustc_resolve/src/diagnostics.rs
@@ -6,7 +6,7 @@ use rustc_ast::{MetaItemKind, NestedMetaItem};
 use rustc_ast_pretty::pprust;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::{
-    codes::*, report_ambiguity_error, struct_span_code_err, Applicability, Diag, DiagCtxt,
+    codes::*, report_ambiguity_error, struct_span_code_err, Applicability, Diag, DiagCtxtHandle,
     ErrorGuaranteed, MultiSpan, SuggestionStyle,
 };
 use rustc_feature::BUILTIN_ATTRIBUTES;
@@ -120,7 +120,7 @@ fn reduce_impl_span_to_impl_keyword(sm: &SourceMap, impl_span: Span) -> Span {
 }
 
 impl<'a, 'tcx> Resolver<'a, 'tcx> {
-    pub(crate) fn dcx(&self) -> &'tcx DiagCtxt {
+    pub(crate) fn dcx(&self) -> DiagCtxtHandle<'tcx> {
         self.tcx.dcx()
     }