--- a/jdk/src/windows/classes/sun/security/krb5/internal/tools/Klist.java	Wed Jun 01 17:11:23 2011 -0700
+++ b/jdk/src/windows/classes/sun/security/krb5/internal/tools/Klist.java	Wed Jun 08 14:01:34 2011 +0800
@@ -95,14 +95,17 @@
             }
             break;
         case 'k':
-            try {
-                KeyTab ktab = KeyTab.getInstance(klist.name);
-                klist.target = ktab;
-                klist.name = ktab.tabName();
-            } catch (Exception e) {
-                klist.displayMessage("KeyTab");
+            KeyTab ktab = KeyTab.getInstance(klist.name);
+            if (ktab.isMissing()) {
+                System.out.println("KeyTab " + klist.name + " not found.");
+                System.exit(-1);
+            } else if (!ktab.isValid()) {
+                System.out.println("KeyTab " + klist.name
+                        + " format not supported.");
                 System.exit(-1);
             }
+            klist.target = ktab;
+            klist.name = ktab.tabName();
             klist.displayTab();
             break;
         default:

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/sun/security/krb5/tools/ktmissing.sh	Wed Jun 08 14:01:34 2011 +0800
@@ -0,0 +1,51 @@
+#
+# Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+
+# @test
+# @bug 7043737
+# @summary klist does not detect non-existing keytab
+# @run shell ktmissing.sh
+#
+
+OS=`uname -s`
+case "$OS" in
+  CYGWIN* )
+    FS="/"
+    ;;
+  Windows_* )
+    FS="\\"
+    ;;
+  * )
+    FS="/"
+    echo "Unsupported system!"
+    exit 0;
+    ;;
+esac
+
+${TESTJAVA}${FS}bin${FS}klist -k this_file_does_not_exist && exit 1
+
+echo ABC > this_is_not_a_keytab
+
+${TESTJAVA}${FS}bin${FS}klist -k this_is_not_a_keytab && exit 2
+
+exit 0