Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!aero!aerospace.aero.org!jordan
From: jordan@aerospace.aero.org (Larry M. Jordan)
Newsgroups: comp.lang.c++
Subject: Naming nested declarations
Message-ID: <98561@aerospace.AERO.ORG>
Date: 29 Jan 91 00:37:08 GMT
Sender: news@aerospace.aero.org
Reply-To: jordan@antares.UUCP (Larry M. Jordan)
Organization: The Aerospace Corporation, El Segundo, CA
Lines: 32

Given the following declaration:

  struct NODE;
  typedef NODE *LVAL;

  struct NODE {
    char n_type;
    char n_flags;
    union ninfo {
      struct cons {
        LVAL xl_car;
        LVAL xl_cdr;
      } n_cons;
      struct vector {
	unsigned length;
	LVAL *xv_data;
      } n_vector;
      ...
    } n_info;
  };

which of the following is "correct":

  [1] int i = sizeof(NODE::ninfo);

  [2] int i = sizeof(union ninfo);

?

Well, Zortech v2.1 can handle [2], but produces an error for [1].
While another vendor can handle [1], but chokes on [2].  Whose right?
What does the ARM say?