On Tue, Dec 21, 2010 at 11:08:29PM -0700, Anthony J. Bentley wrote:

quoted text
> Hi,
> 
> This looks like a typo, almost changes the meaning of the sentence:
> 
> Index: lib/libc/stdlib/malloc.3
> ===================================================================
> RCS file: /cvs/src/lib/libc/stdlib/malloc.3,v
> retrieving revision 1.68
> diff -u lib/libc/stdlib/malloc.3
> --- lib/libc/stdlib/malloc.3	26 May 2010 08:22:11 -0000	1.68
> +++ lib/libc/stdlib/malloc.3	22 Dec 2010 06:02:47 -0000
> @@ -235,7 +235,7 @@
>  Unused pages on the freelist are read and write protected to
>  cause a segmentation fault upon access.
>  This will also switch off the delayed freeing of chunks,
> -reducing random behaviour but detecting double
> +reducing random behaviour by detecting double
>  .Fn free
>  calls as early as possible.
>  .It Cm G

No.

I'm trying to express there: you pay a bit (by reducing randomness),
but you also gains a bit (earlier detection). 

	-Otto