diff --git a/compiler/rustc_ast_passes/src/ast_validation.rs b/compiler/rustc_ast_passes/src/ast_validation.rs
index 93881f5ed4261..bc108447d23fe 100644
--- a/compiler/rustc_ast_passes/src/ast_validation.rs
+++ b/compiler/rustc_ast_passes/src/ast_validation.rs
@@ -63,7 +63,7 @@ impl TraitOrTraitImpl {
 }
 
 struct AstValidator<'a> {
-    session: &'a Session,
+    sess: &'a Session,
     features: &'a Features,
 
     /// The span of the `extern` in an `extern { ... }` block, if any.
@@ -267,7 +267,7 @@ impl<'a> AstValidator<'a> {
     }
 
     fn dcx(&self) -> DiagCtxtHandle<'a> {
-        self.session.dcx()
+        self.sess.dcx()
     }
 
     fn visibility_not_permitted(&self, vis: &Visibility, note: errors::VisibilityNotPermittedNote) {
@@ -359,7 +359,7 @@ impl<'a> AstValidator<'a> {
             in_impl: matches!(parent, TraitOrTraitImpl::TraitImpl { .. }),
             const_context_label: parent_constness,
             remove_const_sugg: (
-                self.session.source_map().span_extend_while_whitespace(span),
+                self.sess.source_map().span_extend_while_whitespace(span),
                 match parent_constness {
                     Some(_) => rustc_errors::Applicability::MachineApplicable,
                     None => rustc_errors::Applicability::MaybeIncorrect,
@@ -472,7 +472,7 @@ impl<'a> AstValidator<'a> {
 
     fn check_defaultness(&self, span: Span, defaultness: Defaultness) {
         if let Defaultness::Default(def_span) = defaultness {
-            let span = self.session.source_map().guess_head_span(span);
+            let span = self.sess.source_map().guess_head_span(span);
             self.dcx().emit_err(errors::ForbiddenDefault { span, def_span });
         }
     }
@@ -480,7 +480,7 @@ impl<'a> AstValidator<'a> {
     /// If `sp` ends with a semicolon, returns it as a `Span`
     /// Otherwise, returns `sp.shrink_to_hi()`
     fn ending_semi_or_hi(&self, sp: Span) -> Span {
-        let source_map = self.session.source_map();
+        let source_map = self.sess.source_map();
         let end = source_map.end_point(sp);
 
         if source_map.span_to_snippet(end).is_ok_and(|s| s == ";") {
@@ -552,7 +552,7 @@ impl<'a> AstValidator<'a> {
     }
 
     fn current_extern_span(&self) -> Span {
-        self.session.source_map().guess_head_span(self.extern_mod.unwrap())
+        self.sess.source_map().guess_head_span(self.extern_mod.unwrap())
     }
 
     /// An `fn` in `extern { ... }` cannot have qualifiers, e.g. `async fn`.
@@ -648,7 +648,7 @@ impl<'a> AstValidator<'a> {
         if ident.name.as_str().is_ascii() {
             return;
         }
-        let span = self.session.source_map().guess_head_span(item_span);
+        let span = self.sess.source_map().guess_head_span(item_span);
         self.dcx().emit_err(errors::NoMangleAscii { span });
     }
 
@@ -753,7 +753,7 @@ impl<'a> AstValidator<'a> {
                     self.dcx().emit_err(errors::PatternFnPointer { span });
                 });
                 if let Extern::Implicit(_) = bfty.ext {
-                    let sig_span = self.session.source_map().next_point(ty.span.shrink_to_lo());
+                    let sig_span = self.sess.source_map().next_point(ty.span.shrink_to_lo());
                     self.maybe_lint_missing_abi(sig_span, ty.id);
                 }
             }
@@ -795,7 +795,7 @@ impl<'a> AstValidator<'a> {
         // FIXME(davidtwco): This is a hack to detect macros which produce spans of the
         // call site which do not have a macro backtrace. See #61963.
         if self
-            .session
+            .sess
             .source_map()
             .span_to_snippet(span)
             .is_ok_and(|snippet| !snippet.starts_with("#["))
@@ -885,7 +885,7 @@ fn validate_generic_param_order(dcx: DiagCtxtHandle<'_>, generics: &[GenericPara
 
 impl<'a> Visitor<'a> for AstValidator<'a> {
     fn visit_attribute(&mut self, attr: &Attribute) {
-        validate_attr::check_attr(&self.session.psess, attr);
+        validate_attr::check_attr(&self.sess.psess, attr);
     }
 
     fn visit_ty(&mut self, ty: &'a Ty) {
@@ -1192,7 +1192,7 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
                 } else if where_clauses.after.has_where_token {
                     self.dcx().emit_err(errors::WhereClauseAfterTypeAlias {
                         span: where_clauses.after.span,
-                        help: self.session.is_nightly_build(),
+                        help: self.sess.is_nightly_build(),
                     });
                 }
             }
@@ -1328,7 +1328,7 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
                     (BoundKind::SuperTraits, BoundConstness::Never, BoundPolarity::Maybe(_))
                         if !self.features.more_maybe_bounds =>
                     {
-                        self.session
+                        self.sess
                             .create_feature_err(
                                 errors::OptionalTraitSupertrait {
                                     span: trait_ref.span,
@@ -1341,7 +1341,7 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
                     (BoundKind::TraitObject, BoundConstness::Never, BoundPolarity::Maybe(_))
                         if !self.features.more_maybe_bounds =>
                     {
-                        self.session
+                        self.sess
                             .create_feature_err(
                                 errors::OptionalTraitObject { span: trait_ref.span },
                                 sym::more_maybe_bounds,
@@ -1752,13 +1752,13 @@ fn deny_equality_constraints(
 }
 
 pub fn check_crate(
-    session: &Session,
+    sess: &Session,
     features: &Features,
     krate: &Crate,
     lints: &mut LintBuffer,
 ) -> bool {
     let mut validator = AstValidator {
-        session,
+        sess,
         features,
         extern_mod: None,
         outer_trait_or_trait_impl: None,