Path: utzoo!attcan!uunet!cs.utexas.edu!swrinde!ucsd!ucbvax!zardoz.coral.com!don
From: don@zardoz.coral.com (Don Dewar)
Newsgroups: comp.lang.c++
Subject: call a constructor
Message-ID: <9008031721.AA18726@zardoz.coral.com>
Date: 3 Aug 90 17:21:49 GMT
References: <1990Aug1.182945.23905@dg-rtp.dg.com>
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 46


) Return-Path: <info-g++-request@prep.ai.mit.edu>
) Date: 1 Aug 90 18:29:45 GMT
) From: uunet!mcnc.org!rti!dg-rtp!farm!taylor  (William Taylor)
) Organization: Data General Corp., Research Triangle Park, NC
) Subject: call a constructor
) Sender: uunet!prep.ai.mit.edu!info-g++-request
) To: info-g++@prep.ai.mit.edu
) 
) Using g++:
) 
) I would like to call a constructor directly on a piece of memory that
) I have allocated.
) 
) I have a pointer to some memory (malloc'ed, shared memory, ...)
) and I would like to put a class there.  How can I call the constructor
) for that class (and its base and member classes, etc.) to initialize 
) the memory?
) 
) I have found out how to do it with cfront.  You can specify a second
) argument to "new" telling it where to construct the class - just what I wanted.
) 
) Is there any way to do this with g++?
) 
) William Taylor 				taylor@dg-rtp.dg.com
) Data General Corporation		{world}!mcnc!rti!dg-rtp!taylor
) Research Triangle Park, NC  27709	(919) 248-5801
) 
) 

I have also been wondering this same thing.  Something I used to do
with CFront all the time was call one constructor from another as a
convenient way to build up overloaded constructors.  Now, to do the
same thing I have to separate the code out of the constructor and call
call it from each constructor.  Is there any chance this will change?

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