David R Tribble <david.tribble@central.beasys.com> writes:

> Bill Wade <bill.wade@stoner.com> wrote:
> > ...
> > A reference member can be changed by destruction/construction.
>
> I was not aware that a reference member could be modified in a destructor.
> Perhaps someone could show me an example?

In can't, but after the destructor of the object in run (does a
reference have a destructor ?), the reference can be rebinded to
annother object.

Quoting Bill Wade:

]>struct foo
]>{
]>  const int& r;
]>  foo(int j): r(j){}
]>};
]>
]>  foo x(7);
]>  x.~foo();
]>  new(&x) foo(5);       // Gives x.r a new binding
]>
]>I believe that a compiler which treated x.r as a constant (even if the
]>destruction/construction were hidden in a subroutine) would not comply
with
]>the standard.  This sample does not invoke undefined behavior.

--

Valentin Bonnard                mailto:bonnardv@pratique.fr
info about C++/a propos du C++: http://www.pratique.fr/~bonnardv/
---
[ comp.std.c++ is moderated.  To submit articles: try just posting with      ]
[ your news-reader.  If that fails, use mailto:std-c++@ncar.ucar.edu         ]
[ FAQ:      http://reality.sgi.com/employees/austern_mti/std-c++/faq.html    ]
[ Policy:   http://reality.sgi.com/employees/austern_mti/std-c++/policy.html ]
[ Comments? mailto:std-c++-request@ncar.ucar.edu                             ]

Bill Wade <bill.wade@stoner.com> wrote:
> ...
> A reference member can be changed by destruction/construction.

I was not aware that a reference member could be modified in a destructor.
Perhaps someone could show me an example?

--------------------.      BEA Systems, Inc. ,-.  +1-972-738-6125 Office
David R. Tribble     \   ,------------------'   \ +1-972-738-6111 Fax
http://www.beasys.com `-'  Dallas, TX 75248      `-----------------------
david.tribble@noSPAM.beasys.com            http://www.flash.net/~dtribble
Support the anti-Spam amendment, join at http://www.cauce.org/
---
[ comp.std.c++ is moderated.  To submit articles: try just posting with      ]
[ your news-reader.  If that fails, use mailto:std-c++@ncar.ucar.edu         ]
[ FAQ:      http://reality.sgi.com/employees/austern_mti/std-c++/faq.html    ]
[ Policy:   http://reality.sgi.com/employees/austern_mti/std-c++/policy.html ]
[ Comments? mailto:std-c++-request@ncar.ucar.edu                             ]