X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=builtins%2Fcommand.def;h=6e6e5f60b0f50acb7cec44ed2931ba03750e4c27;hb=d166f048818e10cf3799aa24a174fb22835f1acc;hp=3a14dc6451f2c2b04d5873d6c1acc2ca19a02331;hpb=ccc6cda312fea9f0468ee65b8f368e9653e1380b;p=platform%2Fupstream%2Fbash.git

diff --git a/builtins/command.def b/builtins/command.def
index 3a14dc6..6e6e5f6 100644
--- a/builtins/command.def
+++ b/builtins/command.def
@@ -117,13 +117,10 @@ command_builtin (list)
   if (use_standard_path)
     {      
       old_path = get_string_value ("PATH");
+      /* If old_path is NULL, $PATH is unset.  If so, we want to make sure
+	 it's unset after this command completes. */
       if (old_path)
 	old_path = savestring (old_path);
-      else
-	{
-	  old_path = xmalloc (1);
-	  old_path[0] = '\0';
-	}
       add_unwind_protect ((Function *)restore_path, old_path);
 
       standard_path = get_standard_path ();
@@ -162,8 +159,13 @@ static void
 restore_path (var)
      char *var;
 {
-  bind_variable ("PATH", var);
-  free (var);
+  if (var)
+    {
+      bind_variable ("PATH", var);
+      free (var);
+    }
+  else
+    unbind_variable ("PATH");
 }
 
 /* Return a value for PATH that is guaranteed to find all of the standard