class Foo {
public: 
  enum EN { ev1 , ev2 };


   void foo(EN e);
};

===================== CLANG 130 =============================

Clang Parser using v0.62 g++ 11.3 

clang_parseTranslationUnit2(0x242, -fPIC, -fno-exceptions, -Wno-constant-logical-operand, -x, c++, -std=c++17, /home/kleint/t.cpp, -isystem, /opt/QtO/clang130qt/lib/clang/13.0.0/include
t.cpp:1:1-7:2            >ClassDecl [def], type="Foo", spelling="Foo"
t.cpp:2:1-8                >CXXAccessSpecifier public
                           <CXXAccessSpecifier
t.cpp:3:3-24               >EnumDecl, "unsigned int", type="Foo::EN", spelling="EN"
t.cpp:3:13-16                >EnumConstantDecl, value=0u (0x0), type="Foo::EN", spelling="ev1"
                             <EnumConstantDecl
t.cpp:3:19-22                >EnumConstantDecl, value=1u (0x1), type="Foo::EN", spelling="ev2"
                             <EnumConstantDecl
                           <EnumDecl
t.cpp:6:4-18               >CXXMethod Available, result type="void", ExceptionNone, type="void (Foo::EN)", spelling="foo"
t.cpp:6:13-17                >ParmDecl, type="Foo::EN", spelling="e"
t.cpp:6:13-15                  >TypeRef, type="Foo::EN", spelling="enum Foo::EN"
                               <TypeRef
                             <ParmDecl
                           <CXXMethod
                         <ClassDecl (Foo)


========================= CLANG 160 ========================

Clang Parser using v0.63 g++ 11.3

clang_parseTranslationUnit2(0x242, -fPIC, -fno-exceptions, -Wno-constant-logical-operand, -x, c++, -std=c++17, /home/kleint/t.cpp, -isystem, /opt/QtO/clang160qt/lib/clang/16/include
t.cpp:1:1-7:2            >ClassDecl [def], type="Foo", spelling="Foo"
t.cpp:2:1-8                >CXXAccessSpecifier public
                           <CXXAccessSpecifier
t.cpp:3:3-24               >EnumDecl, "unsigned int", type="Foo::EN", spelling="EN"
t.cpp:3:13-16                >EnumConstantDecl, value=0u (0x0), type="Foo::EN", spelling="ev1"
                             <EnumConstantDecl
t.cpp:3:19-22                >EnumConstantDecl, value=1u (0x1), type="Foo::EN", spelling="ev2"
                             <EnumConstantDecl
                           <EnumDecl
t.cpp:6:4-18               >CXXMethod Available, result type="void", ExceptionNone, type="void (EN)", spelling="foo"
t.cpp:6:13-17                >ParmDecl, type=<elaborated type> "EN", spelling="e"
t.cpp:6:13-15                  >TypeRef, type="Foo::EN", spelling="enum Foo::EN"
                               <TypeRef
                             <ParmDecl
                           <CXXMethod
                         <ClassDecl (Foo)