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| author |   deraadt <deraadt@openbsd.org> | 2014-04-19 11:30:40 +0000 |
|---|---|---|
| committer | deraadt <deraadt@openbsd.org> | 2014-04-19 11:30:40 +0000 |
| commit | 5d354709047d762de49ee774c57d23b877c33736 (patch) | |
| tree | 796da3f35cbcf11acc1f91d1e1c3e7942e074830 /lib/libc/string/strcat.3 | |
| parent | when copying socket path, check that we didnt truncate it which would cause (diff) | |
| download | wireguard-openbsd-5d354709047d762de49ee774c57d23b877c33736.tar.xz wireguard-openbsd-5d354709047d762de49ee774c57d23b877c33736.zip | |
Use somewhat harsher language and better examples; demonstrate that
non-dangerous use functions is difficult.
ok guenther
Diffstat (limited to 'lib/libc/string/strcat.3')
| -rw-r--r-- | lib/libc/string/strcat.3 | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/lib/libc/string/strcat.3 b/lib/libc/string/strcat.3 index fba992edd9b..7368d08e4b3 100644 --- a/lib/libc/string/strcat.3 +++ b/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 |