--- a/jdk/src/share/classes/javax/swing/DefaultListSelectionModel.java	Thu Mar 08 15:26:32 2012 -0800
+++ b/jdk/src/share/classes/javax/swing/DefaultListSelectionModel.java	Tue Mar 13 13:18:07 2012 +0200
@@ -252,6 +252,10 @@
 
     // Updates first and last change indices
     private void markAsDirty(int r) {
+        if (r == -1) {
+            return;
+        }
+
         firstAdjustedIndex = Math.min(firstAdjustedIndex, r);
         lastAdjustedIndex =  Math.max(lastAdjustedIndex, r);
     }
@@ -358,16 +362,12 @@
     private void updateLeadAnchorIndices(int anchorIndex, int leadIndex) {
         if (leadAnchorNotificationEnabled) {
             if (this.anchorIndex != anchorIndex) {
-                if (this.anchorIndex != -1) { // The unassigned state.
-                    markAsDirty(this.anchorIndex);
-                }
+                markAsDirty(this.anchorIndex);
                 markAsDirty(anchorIndex);
             }
 
             if (this.leadIndex != leadIndex) {
-                if (this.leadIndex != -1) { // The unassigned state.
-                    markAsDirty(this.leadIndex);
-                }
+                markAsDirty(this.leadIndex);
                 markAsDirty(leadIndex);
             }
         }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/swing/JTable/7027139/bug7027139.java	Tue Mar 13 13:18:07 2012 +0200
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2012, 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 7027139
+   @summary getFirstIndex() does not return the first index that has changed
+   @author Pavel Porvatov
+*/
+
+import javax.swing.*;
+import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.ListSelectionListener;
+
+public class bug7027139 {
+    public static void main(String[] args) throws Exception {
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                JTable orderTable = new JTable(new String[][]{
+                        {"Item 1 1", "Item 1 2"},
+                        {"Item 2 1", "Item 2 2"},
+                        {"Item 3 1", "Item 3 2"},
+                        {"Item 4 1", "Item 4 2"},
+                },
+                        new String[]{"Col 1", "Col 2"});
+
+                ListSelectionModel selectionModel = orderTable.getSelectionModel();
+                selectionModel.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
+                selectionModel.addListSelectionListener(new ListSelectionListener() {
+                    public void valueChanged(ListSelectionEvent e) {
+                        if (e.getValueIsAdjusting()) {
+                            return;
+                        }
+
+                        if (e.getFirstIndex() < 0) {
+                            throw new RuntimeException("Test bug7027139 failed");
+                        }
+                    }
+                });
+
+                orderTable.selectAll();
+            }
+        });
+
+        System.out.println("Test bug7027139 passed");
+    }
+}