In message ,

"Ted Unangst"  pointed out that

# strlcpy is wrong with overlapping arguments.
Should this be mentioned in the strlcpy/strlcat man page?

(It isn't as of 4.3-release.)  Here's a suggested patch:
Index: strlcpy.3

===================================================================

RCS file: /cvs/src/lib/libc/string/strlcpy.3,v

retrieving revision 1.19

diff -u -r1.19 strlcpy.3

--- strlcpy.3	31 May 2007 19:19:32 -0000	1.19

+++ strlcpy.3	27 May 2008 10:51:45 -0000

@@ -88,6 +88,17 @@

 It will append at most

 .Fa size

 - strlen(dst) - 1 bytes, NUL-terminating the result.

+.Pp

+.Fa src

+and

+.Fa dst

+must not overlap, i.e., no character copied by

+.Fn strlcpy

+or

+.Fn strlcat

+may be within the initial

+.Fa dst

+string.

 .Sh RETURN VALUES

 The

 .Fn strlcpy
ciao,
--

-- Jonathan Thornburg (remove -animal to reply)

   School of Mathematics, U of Southampton, England

   "Washing one's hands of the conflict between the powerful and the

    powerless means to side with the powerful, not to be neutral."

                                      -- quote by Freire / poster by Oxfam