Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!zaphod.mps.ohio-state.edu!mips!spool.mu.edu!snorkelwacker.mit.edu!hsdndev!cfa203!todd
From: todd@cfa.harvard.edu (Todd Karakashian)
Newsgroups: comp.lang.c
Subject: Re: result of strstr(cs,ct) when ct is a null string
Message-ID: <1991May20.202314.432@cfa203.harvard.edu>
Date: 20 May 91 20:23:14 GMT
References: <1991May20.163227.7166@cfa.harvard.edu>
Organization: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA,  USA
Lines: 34

From article <1991May20.163227.7166@cfa.harvard.edu>, by todd@cfa.harvard.edu (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
> 

Well!  Having now perused the ANSI standard more carefully, I find in
4.11.5.7:

	"if s2 points to a string of zero length, the function
returns s1."

Whoops - very sorry to bother you.  In the words of Emily Latella:

			"Never mind."


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