diff options
Diffstat (limited to 'lib/libc/stdlib')
| -rw-r--r-- | lib/libc/stdlib/malloc.3 | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/libc/stdlib/malloc.3 b/lib/libc/stdlib/malloc.3 index 1182256650a..ea6344d6a95 100644 --- a/lib/libc/stdlib/malloc.3 +++ b/lib/libc/stdlib/malloc.3 @@ -30,7 +30,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $OpenBSD: malloc.3,v 1.33 2003/11/25 12:32:54 jmc Exp $ +.\" $OpenBSD: malloc.3,v 1.34 2004/02/02 18:15:52 tedu Exp $ .\" .Dd August 27, 1996 .Dt MALLOC 3 @@ -192,7 +192,14 @@ at exit. This option requires the library to have been compiled with -DMALLOC_STATS in order to have any effect. .Pp +.It Cm F +.Dq Freeguard . +Enable use after free protection. +Unused pages on the freelist are read and write protected to +cause a segmentation fault upon access. +.Pp .It Cm G +.Dq Guard . Enable guard pages and chunk randomization. Each page size or larger allocation is followed by a guard page that will cause a segmentation fault upon any access. |