Issue 1519:  _var & _out types problems (01) (cxx_revision)
Source:  (, )
Nature:  Revision
Severity: 
Summary: Summary: 1.  The spec insection 20.9.2 does not specifically address the form of
 T_out types for fixed length structured types.   So, should the T_out
 type be:
 
 typedef T &T_out;
 
 or should it follow the form of the T_out type for variable length
 structured types and define as a "class T_out"?  In this case, of course
 the copy contructor operator from T_var would not delete the pointer
 held by the T_var.
 
 Since the "class T_out" solution for fixed length types does not appear
 to have any advantages over the typedef, I recommend that the spec be
 modified to state that T_out types for fixed length structured types
 simply be a typedef of "T&".
 

Resolution: see below
Revised Text: Preceding the final paragraph of 1.9.2, add the following para:
For fixed-length underlying types, no memory management issues arise;
however, a compliant mapping must provide the following type definition
in the scope of T:
typedef T &T_out;
Actions taken:
June 10, 1998: received issue
May 13, 2002: closed issue
Discussion: 

End of Annotations:=====
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Sender: jon@floorboard.com
Date: Wed, 10 Jun 1998 12:15:04 -0700
From: Jonathan Biggar <jon@floorboard.com>
To: issues@omg.org, cxx_revision@omg.org
Subject: Problems related to _var & _out types in C++ language mapping

1.  The spec insection 20.9.2 does not specifically address the form
of
T_out types for fixed length structured types.   So, should the T_out
type be:

typedef T &T_out;

or should it follow the form of the T_out type for variable length
structured types and define as a "class T_out"?  In this case, of
course
the copy contructor operator from T_var would not delete the pointer
held by the T_var.

Since the "class T_out" solution for fixed length types does not
appear
to have any advantages over the typedef, I recommend that the spec be
modified to state that T_out types for fixed length structured types
simply be a typedef of 'T&'.

Date: Mon, 28 May 2001 13:14:53 +1000 (EST)
From: Michi Henning <michi.henning@iona.com>
Reply-To: C++ Revision Task Force <cxx_revision@omg.org>
To: C++ Revision Task Force <cxx_revision@omg.org>
Subject: Proposal for 1519
Message-ID: <Pine.HPX.4.05.10105281312320.1568-100000@bobo.ooc.com.au>
Organization: IONA Technologies
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Status: RO

Proposal for 1519:

Preceding the final paragraph of 1.9.2, add the following para:

	  For fixed-length underlying types, no memory management
	  issues arise;
	  however, a compliant mapping must provide the following
	  type definition in the scope of T:

	       typedef T &T_out;

							Cheers,

														Michi.
--
Michi Henning                             +61 7 3324 9633
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