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From: schmidt@blanche.ics.uci.edu (Doug Schmidt)
Newsgroups: comp.lang.c++
Subject: realloc and new
Message-ID: <946@paris.ics.uci.edu>
Date: 20 Nov 88 05:22:09 GMT
Sender: news@paris.ics.uci.edu
Reply-To: Doug Schmidt <schmidt@crimee.ics.uci.edu>
Organization: University of California, Irvine - Dept of ICS
Lines: 43
References:

Hi,

   Several recent postings on comp.lang.c utilizing realloc prompted
me to write and ask whether mixing calls to new and realloc are
guaranteed to work correctly with C++?  For some reason it seems
somewhat improper to mix the built-in free store allocator with the
standard C library re-allocator, but other methods don't appear
particularly satisfactory either.  

   For instance, page 182 of Stroustrup's book illustrates a good
example of ( new / delete ) pairs that might be better served with a
realloc-type scheme ( better in the sense that re-copying of data
could be avoided under certain circumstances best determined by the
free-store management system ).

   Perhaps what is necessary is to introduce another memory management
keyword, e.g.:

----------------------------------------
char *Foo = new char [ Size ];
// ...
char *Bar = renew char [ Foo, Size * 2 ];
----------------------------------------

   Of course, the FSF's G++ could always make this an extension using the
keyword ``regnu'' ( sorry, I couldn't resist! ).


thanks,

Doug Schmidt
----------------------------------------
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--
schmidt@bonnie.ics.uci.edu (ARPA) |   Per me si va nella cita dolente.
                                  |   Per me si va nell' etterno dolore.
                                  |   Per me si va tra la perduta gente.
                                  |   Lasciate ogni speranza voi ch' entrate.