Graphics2D drawString generate exception on AttributedString.getIterator().

JDK Version: 1.2fcs-K
Locale: C, zh
OS: Solaris 2.6

Graphics2D's drawString() will generate nullpointer exception
 when using AttributedString.getIterator() as arguments, the
AttributedString contain non-ascii characters.
See attachment program to reproduce it.

Exception occurred during event dispatching:
java.lang.NullPointerException
        at java.awt.geom.AffineTransform.preConcatenate(Compiled Code)
        at sun.awt.font.StandardGlyphVector.getGlyphTX(Compiled Code)
        at sun.awt.font.StandardGlyphVector.<init>(Compiled Code)
        at java.awt.Font.createGlyphVector(Compiled Code)
        at sun.awt.font.ExtendedTextSourceLabel.createGV(Compiled Code)
        at sun.awt.font.ExtendedTextSourceLabel.getGV(Compiled Code)
        at sun.awt.font.ExtendedTextSourceLabel.draw(Compiled Code)
        at sun.awt.font.ExtendedTextLabelComponent.handleDraw(Compiled Code)
        at sun.awt.font.TextLineComponent.drawTextAndEmbellishments(Compiled Code)
        at sun.awt.font.TextLineComponent.draw(Compiled Code)
        at java.awt.font.TextLine.draw(Compiled Code)
        at java.awt.font.TextLayout.draw(Compiled Code)
        at sun.java2d.SunGraphics2D.drawString(Compiled Code)
        at TextDrawer.paint(Compiled Code)
        at sun.awt.motif.MComponentPeer.handleEvent(Compiled Code)
        at java.awt.Component.dispatchEventImpl(Compiled Code)
        at java.awt.Component.dispatchEvent(Compiled Code)
        at java.awt.EventQueue.dispatchEvent(Compiled Code)
        at java.awt.EventDispatchThread.run(Compiled Code)

jim.hu@prc 1998-09-23