moc parse error on combination of namespace, enum and include

Compile the attached project to get the error reported by moc: Parse error at "...(file name with path)..."

The project can be compiled successfully with 5.12.5.  Not tested with other versions.

Basically, this is the pattern to trigger the bug:

#pragma once

namespace myNameSpace{

  typedef enum _MY_ENUMS_ {

    #include "MyNames.h"

  }eMY_ENUMS;

  class QMyClass : public QObject

  {

    Q_OBJECT

    // other contents

  };

} // namespace

And this is the contents of MyNames.h:

myEnum1,
myEnum2,

Notice the comma after myEnum2.  The moc will be a success if the comma is removed.  The tricky part is, if the contents is placed directly inside enum, without using #include, it will also be a success even with the comma after myEnum2.