cast instead

Author: jsji

clang/include/clang/Basic/DiagnosticParseKinds.td

@@ -983,6 +983,9 @@ def warn_cxx23_variadic_friends : Warning<
   "variadic 'friend' declarations are incompatible with C++ standards before C++2c">,
   DefaultIgnore, InGroup<CXXPre26Compat>;
 
+def err_friend_concept : Error<
+  "friend declaration cannot be a concept">;
+
 // C++11 default member initialization
 def ext_nonstatic_member_init : ExtWarn<
   "default member initializer for non-static data member is a C++11 "

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -3020,8 +3020,6 @@ def err_c23_constexpr_pointer_not_null : Error<
   "constexpr pointer initializer is not null">;
 
 // C++ Concepts
-def err_friend_concept : Error<
-  "friend declaration cannot be a concept">;
 def err_concept_decls_may_only_appear_in_global_namespace_scope : Error<
   "concept declarations may only appear in global or namespace scope">;
 def err_concept_no_parameters : Error<

clang/lib/Parse/ParseDeclCXX.cpp

@@ -3150,8 +3150,8 @@ Parser::DeclGroupPtrTy Parser::ParseCXXClassMemberDeclaration(
   if (Tok.is(tok::kw_concept)) {
     Diag(Tok.getLocation(),
          DS.isFriendSpecified() || NextToken().is(tok::kw_friend)
-             ? diag::err_friend_concept
-             : diag::
+             ? (unsigned)diag::err_friend_concept
+             : (unsigned)diag::
                    err_concept_decls_may_only_appear_in_global_namespace_scope);
     SkipUntil(tok::semi, tok::r_brace, StopBeforeMatch);
     return nullptr;