X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Fpwd.pl;h=6b429eb5a6849d4c2975bd425fe5069e8c2323f1;hb=cd4eab350f31b452f88e849e0c9d1309692f544f;hp=beb591679e261072d8fb0bc80ee0ea6e9cc6cbfd;hpb=748a93069b3d16374a9859d1456065dd3ae11394;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/lib/pwd.pl b/lib/pwd.pl
index beb5916..6b429eb 100644
--- a/lib/pwd.pl
+++ b/lib/pwd.pl
@@ -1,5 +1,14 @@
 ;# pwd.pl - keeps track of current working directory in PWD environment var
 ;#
+#
+# This library is no longer being maintained, and is included for backward
+# compatibility with Perl 4 programs which may require it.
+#
+# In particular, this should not be used as an example of modern Perl
+# programming techniques.
+#
+# Suggested alternative: Cwd
+#
 ;# $RCSfile: pwd.pl,v $$Revision: 4.1 $$Date: 92/08/07 18:24:11 $
 ;#
 ;# $Log:	pwd.pl,v $
@@ -16,7 +25,7 @@ sub main'initpwd {
     if ($ENV{'PWD'}) {
 	local($dd,$di) = stat('.');
 	local($pd,$pi) = stat($ENV{'PWD'});
-	if ($di != $pi || $dd != $pd) {
+	if (!defined $dd or !defined $pd or $di != $pi or $dd != $pd) {
 	    chop($ENV{'PWD'} = `pwd`);
 	}
     }
@@ -26,7 +35,7 @@ sub main'initpwd {
     if ($ENV{'PWD'} =~ m|(/[^/]+(/[^/]+/[^/]+))(.*)|) {
 	local($pd,$pi) = stat($2);
 	local($dd,$di) = stat($1);
-	if ($di == $pi && $dd == $pd) {
+	if (defined $pd and defined $dd and $di == $pi and $dd == $pd) {
 	    $ENV{'PWD'}="$2$3";
 	}
     }