result of strstr(cs,ct) when ct is a null string

[Todd Karakashian]

Is the result of strstr(cs,ct) defined when ct is a null string 
(i.e., when *ct == '\0')?  

SunOS 4.1.1 strstr() returns cs in this situation.  I checked the man
page, K&R 2, and the ANSI standard but couldn't find any illuminating
information (like, for example, saying it was undefined).

I am thinking perhaps that strstr() ought to return NULL in this case, or
maybe a pointer to the null termination of cs, but I am curious what
other people think.  

Thanks...

				Todd


########################################################################
## Todd Karakashian		          todd at cfa.harvard.edu (I-net)##
## Smithsonian Astrophysical Observatory  ...harvard!cfa!todd (uucp)  ##
## 60 Garden Street, MS 70		  todd at cfa (BITNET)           ##
## Cambridge, MA  02138 USA	          Phone: 617-495-7168         ##
########################################################################

-- 
########################################################################
## Todd Karakashian		          todd at cfa.harvard.edu (I-net)##
## Smithsonian Astrophysical Observatory  ...harvard!cfa!todd (uucp)  ##
## 60 Garden Street, MS 70		  todd at cfa (BITNET)           ##