From: Keith.S.Thompson+u@gmail.com   
      
   James Kuyper  writes:   
   [...]   
   > Note: in C2023, the predefined Identifiers section says: "Any other   
   > predefined macro names: shall begin with a leading underscore followed   
   > by an uppercase letter; or, a second underscore...". For earlier   
   > versions of the standard, user code should avoid using such identifiers   
   > because they were reserved for all purposes, but that's no longer the   
   > case. Now, they should be avoided because they may be pre-defined by the   
   > implementation, which means that any attempt to use them might have   
   > unpredictable results.   
      
   That's in the "Predefined macro names" section (N3220 6.10.10.1).   
      
   The "Predefine identifiers" section (6.4.3.2) documents __func__.   
   There are no other predefined identifiers.   
      
   [...]   
      
   --   
   Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com   
   void Void(void) { Void(); } /* The recursive call of the void */   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)