From: "Luke Bishop" <lbishop AT calvin DOT stemnet DOT nf DOT ca>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: new operator
Date: 17 Feb 1998 22:13:59 GMT
Organization: The Zone
Lines: 11
Message-ID: <01bd3a84$3863ca80$0201a8c0@technoid>
References: <6cacaa$c5n1 AT walter DOT wcom DOT com>
NNTP-Posting-Host: n072h123.thezone.net
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

> In DJGPP, does the new operator throw an exception if it cannot allocate
> the requested memory?  Or does it just return a NULL value.?

No, worse still.  DJGPP's LIBC standard new handler dumps you to DOS if it
cannot allocate the memory.  To avoid this, you should overload the new
operator and call malloc manually inside the overloaded operator.  Watch
out for virtual functions, though, because DJGPP will assign your VFTBL to
a NULL just as easily as to real memory.  Also, if your overloaded new
returns null, class construction continues anyway and the constructor is
called with a this pointer of NULL.