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