C++2a -> C++20 in some identifiers; NFC.
diff --git a/clang/lib/Parse/ParseDeclCXX.cpp b/clang/lib/Parse/ParseDeclCXX.cpp
index cbff35a..6b91919 100644
--- a/clang/lib/Parse/ParseDeclCXX.cpp
+++ b/clang/lib/Parse/ParseDeclCXX.cpp
@@ -155,7 +155,7 @@
     // Normal namespace definition, not a nested-namespace-definition.
   } else if (InlineLoc.isValid()) {
     Diag(InlineLoc, diag::err_inline_nested_namespace_definition);
-  } else if (getLangOpts().CPlusPlus2a) {
+  } else if (getLangOpts().CPlusPlus20) {
     Diag(ExtraNSs[0].NamespaceLoc,
          diag::warn_cxx14_compat_nested_namespace_definition);
     if (FirstNestedInlineLoc.isValid())
@@ -2787,7 +2787,7 @@
                  !DS.isFriendSpecified()) {
         // It's a default member initializer.
         if (BitfieldSize.get())
-          Diag(Tok, getLangOpts().CPlusPlus2a
+          Diag(Tok, getLangOpts().CPlusPlus20
                         ? diag::warn_cxx17_compat_bitfield_member_init
                         : diag::ext_bitfield_member_init);
         HasInClassInit = Tok.is(tok::equal) ? ICIS_CopyInit : ICIS_ListInit;
@@ -2992,7 +2992,7 @@
           << 0 /* default */;
       else
         Diag(ConsumeToken(), diag::err_default_special_members)
-            << getLangOpts().CPlusPlus2a;
+            << getLangOpts().CPlusPlus20;
       return ExprError();
     }
   }