1 files changed, 12 insertions, 9 deletions

diff --git a/src/lib/libc/string/strdup.3 b/src/lib/libc/string/strdup.3
index 925cbf3d46..6abbba57cb 100644
--- a/src/lib/libc/string/strdup.3
+++ b/src/lib/libc/string/strdup.3
@@ -1,5 +1,7 @@
-.\" Copyright (c) 1990, 1991 The Regents of the University of California.
-.\" All rights reserved.
+.\" $OpenBSD: strdup.3,v 1.6 1998/08/19 05:51:14 pjanzen Exp $
+.\"
+.\" Copyright (c) 1990, 1991, 1993
+.\"     The Regents of the University of California.  All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
@@ -29,10 +31,9 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"     from: @(#)strdup.3      5.3 (Berkeley) 4/19/91
-.\"     $Id: strdup.3,v 1.1.1.1 1995/10/18 08:42:22 deraadt Exp $
+.\"     @(#)strdup.3    8.1 (Berkeley) 6/9/93
 .\"
-.Dd April 19, 1991
+.Dd June 9, 1993
 .Dt STRDUP 3
 .Os
 .Sh NAME
@@ -53,13 +54,15 @@ does the copy, and returns a pointer to it.
 The pointer may subsequently be used as an
 argument to the function
 .Xr free 3 .
+.Pp
+If insufficient memory is available, NULL is returned.
 .Sh SEE ALSO
 .Xr free 3 ,
 .Xr malloc 3 ,
-.Xt strcpy 3 ,
-.Xt strlen 3
+.Xr strcpy 3 ,
+.Xr strlen 3
 .Sh HISTORY
 The
 .Fn strdup
-function
-.Ud .
+function first appeared in
+.Bx 4.4 .