>Number:         5001
>Category:       bin
>Synopsis:       sh doesn't like "cd ./"
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people (Utility Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 16 13:05:01 1998
>Last-Modified:
>Originator:     Tom Yu
>Organization:
	dis
>Release:        971126 or so
>Environment:
	
System: NetBSD chaos-in-motion 1.3_ALPHA NetBSD 1.3_ALPHA (CHAOS) #16: Wed Nov 26 17:37:10 EST 1997 tlyu@chaos-in-motion:/usr/src/sys/arch/i386/compile/CHAOS i386


>Description:

	There is a bug in bin/sh/cd.c that prevents the command "cd ./" 
from working.  This is due to the special handling of a leading "./" in
the destination directory in cdcmd().

>How-To-Repeat:
	/bin/sh
	cd ./

>Fix:
	One fix is to check to make sure that the path is longer
than two bytes before lopping off the leading "./".  This is against
/*	$NetBSD: cd.c,v 1.23 1997/07/04 20:59:40 christos Exp $	*/,
which is still current, I believe.

--- /usr/stock-current/src/bin/sh/cd.c  Sat Jul  5 07:12:27 1997
+++ cd.c        Mon Feb 16 15:45:55 1998
@@ -110,7 +110,8 @@
                                /*
                                 * XXX - rethink
                                 */
-                               if (p[0] == '.' && p[1] == '/')
+                               if (p[0] == '.' && p[1] == '/' &&
+                                       strlen(p) > 2)
                                        p += 2;
                                print = strcmp(p, dest);
                        }
>Audit-Trail:
>Unformatted: