Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!taumet!steve
From: steve@taumet.com (Stephen Clamage)
Newsgroups: comp.lang.c++
Subject: Re: How to get the functionality of realloc() in C++ ?
Message-ID: <728@taumet.com>
Date: 14 May 91 22:01:25 GMT
References: <1991May13.191807.29295@csl.dl.nec.com>
Organization: Taumetric Corporation, San Diego
Lines: 20

manohar@csl.dl.nec.com (Mun o her) writes:

>How to get the functionality of 'realloc()' in C++ ?
>Note : realloc() is used to change the size of the memory.

C++ does not support the functionality of realloc() via 'new' and
'delete'.  You have two choices:

1.  Do it by hand.  Use 'new' to acquire a larger space, copy the
    data, and 'delete' the old space.  This is what realloc() does
    anyway, if the space cannot be extended where it is.

2.  Use malloc(), realloc(), and free() in your C++ program.  Check
    your documentation to see whether this is supported.  It probably
    is.  WARNINGS:  Do not use malloc/realloc for objects with
    constructors.  Do not 'delete' something allocated with
    malloc/realloc.  Do not 'free' something allocated with 'new'.
-- 

Steve Clamage, TauMetric Corp, steve@taumet.com