Date:	Sun, 7 Jan 2001 08:25:52 +0200 (IST)
From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender:	eliz AT is
To:	"Mark E." <snowball3 AT bigfoot DOT com>
cc:	djgpp-workers AT delorie DOT com
Subject:	Re: valloc and memalign draft
In-Reply-To:	<3A55C132.12287.6F26E9@localhost>
Message-ID:	<Pine.SUN.3.91.1010107082143.21289C-100000@is>
MIME-Version:	1.0
Reply-To:	djgpp-workers AT delorie DOT com
Errors-To:	nobody AT delorie DOT com
X-Mailing-List:	djgpp-workers AT delorie DOT com
X-Unsubscribes-To:	listserv AT delorie DOT com

On Fri, 5 Jan 2001, Mark E. wrote:

> +   /* Temporarily clear chunk-in-use bit so macros work correctly.  */
> +   b1->size &= ~1;

Isn't this a bit dangerous?  Doesn't it leave the malloc chain in an 
inconsistent state, for a small window of opportunities?  What if some 
signal (i.e. exception) strikes between this line and where you restore 
the bit, and the code run from the signal handler calls memalign?

- Raw text -