Use somewhat harsher language and better examples; demonstrate that

non-dangerous use functions is difficult.
ok guenther

1 files changed, 9 insertions, 12 deletions

diff --git a/src/lib/libc/string/strcat.3 b/src/lib/libc/string/strcat.3
index fba992edd9..7368d08e4b 100644
--- a/src/lib/libc/string/strcat.3
+++ b/src/lib/libc/string/strcat.3
@@ -1,4 +1,4 @@
-.\"     $OpenBSD: strcat.3,v 1.16 2013/12/19 20:52:37 millert Exp $
+.\"     $OpenBSD: strcat.3,v 1.17 2014/04/19 11:30:40 deraadt Exp $
 .\"
 .\" Copyright (c) 1990, 1991 The Regents of the University of California.
 .\" All rights reserved.
@@ -31,12 +31,12 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: December 19 2013 $
+.Dd $Mdocdate: April 19 2014 $
 .Dt STRCAT 3
 .Os
 .Sh NAME
 .Nm strcat
-.Nd concatenate two strings
+.Nd concatenate two strings without bounds checking
 .Sh SYNOPSIS
 .In string.h
 .Ft char *
@@ -50,22 +50,19 @@ to the end of the NUL-terminated string
 .Fa s ,
 then adds a terminating
 .Ql \e0 .
-The string
-.Fa s
-must have sufficient space to hold the result.
+.Pp
+No bounds checking is performed.
+If the buffer
+.Fa dst
+is not large enough to hold the result,
+subsequent memory will be damaged.
 .Sh RETURN VALUES
 The
 .Fn strcat
 function return the pointer
 .Fa s .
 .Sh SEE ALSO
-.Xr bcopy 3 ,
-.Xr memccpy 3 ,
-.Xr memcpy 3 ,
-.Xr memmove 3 ,
-.Xr strcpy 3 ,
 .Xr strlcpy 3 ,
-.Xr strncat 3 ,
 .Xr wcscat 3 ,
 .Xr wcslcpy 3
 .Sh STANDARDS