From:	"John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: [Q] malloc() and assumptions about alignment
Date:	Thu, 13 Feb 1997 20:13:59 -0800
Organization:	Two pounds of chaos and a pinch of salt
Lines:	31
Message-ID:	<3303E687.2AF7@cs.com>
References:	<5dvv1h$ar9 AT news DOT service DOT uci DOT edu>
Reply-To:	fighteer AT cs DOT com
NNTP-Posting-Host:	ppp201.cs.com
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

John Beppu wrote:
> 
>   question 1    Is it safe to assume that memory allocated with
>                 malloc() will be aligned on at least a 4 byte
>                 boundary.  (using djgpp)

Yes, as long as the standard compilation switches are used.  Take a look
at the gcc docs for more information; or you could just get the library
sources (v2/djlsr201.zip) and peek into 'malloc.c'.  :)

>   question 2    Is it safe to assume the above will be true of
>                 ports of gcc to other platforms?

Probably, but it's best to test it to make sure.

>   question 3    ...and what about other non-gcc compilers?

No, you can't depend on this.

May I ask what it is that you are doing that depends on memory
alignment?

-- 
John M. Aldrich, aka Fighteer I <fighteer AT cs DOT com>

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