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authorKenneth R Westerback <krw@cvs.openbsd.org>2005-05-15 22:38:27 +0000
committerKenneth R Westerback <krw@cvs.openbsd.org>2005-05-15 22:38:27 +0000
commitd7a7f8a12607d4507605cd7d434d5df172fa509a (patch)
tree5fb3bdf04e83c3e3c9e1e4b5507e0dda40485a7d /share/man
parentdda364e6c2ba246aeb807e323cba62a1cfbe0ecf (diff)
Update style recommendation around NULL usage, especially in function
parameters, after discussions a while ago with mickey@, deraadt@, millert@. Verbiage by millert@, ok millert@.
Diffstat (limited to 'share/man')
-rw-r--r--share/man/man9/style.99
1 files changed, 3 insertions, 6 deletions
diff --git a/share/man/man9/style.9 b/share/man/man9/style.9
index f307fd03874..051ae00537d 100644
--- a/share/man/man9/style.9
+++ b/share/man/man9/style.9
@@ -22,7 +22,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" $OpenBSD: style.9,v 1.38 2004/04/10 09:10:16 jmc Exp $
+.\" $OpenBSD: style.9,v 1.39 2005/05/15 22:38:26 krw Exp $
.\"
.Dd June 18, 2001
.Dt STYLE 9
@@ -516,11 +516,8 @@ is the preferred null pointer constant.
Use
.Dv NULL
instead of
-(type\ *)0 or (type\ *)NULL in contexts where the compiler knows the
-type, e.g., in assignments.
-Use (type\ *)NULL in other contexts, in particular for all function args.
-(Casting is essential for variadic args and is necessary for other args
-if the function prototype might not be in scope.)
+(type\ *)0 or (type\ *)NULL in all cases except for arguments to variadic
+functions where the compiler does not know the type.
Test pointers
against
.Dv NULL ,