diff -r 0e6f2837eeca -r bd26e23a33e0 jdk/src/share/classes/sun/swing/SwingUtilities2.java
--- a/jdk/src/share/classes/sun/swing/SwingUtilities2.java	Tue Jun 22 12:06:33 2010 +0400
+++ b/jdk/src/share/classes/sun/swing/SwingUtilities2.java	Tue Jun 22 14:36:46 2010 +0400
@@ -438,8 +438,12 @@
         // c may be null here.
         String clipString = "...";
         availTextWidth -= SwingUtilities2.stringWidth(c, fm, clipString);
+        if (availTextWidth <= 0) {
+            //can not fit any characters
+            return clipString;
+        }
+
         boolean needsTextLayout;
-
         synchronized (charsBufferLock) {
             int stringLength = syncCharsBuffer(string);
             needsTextLayout =