I was debugging another problem and got the following message while
running caffeinemarks 2.5:

AWT lock error (../../../../src/solaris/sun/awt_Frame.c,708) (last held by
../../../../src/solaris/sun/awt_Frame.c,678) 1
AWT unlock error (../../../../src/solaris/sun/awt_Frame.c,775,1)

The problem seems to be a recursive use of AWT_LOCK. To reproduce:

cd /home/never/java/benchmarks/caffeinemark25
/usr/local/java/jdk1.1.4/solaris/bin/java_g sun.applet.AppletViewer
caffeinemark2.html

Once the window appears press the button marked "Local..." and you
should see the same message. The application continues to work fine even in the
face of the message. It may acually be just a bug in the assertion checker. Also it doesn't show up in 1.2.
tom.rodriguez@Eng 1997-09-29

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[ BEGIN phil.race@eng 06-oct-97]

I see this message too, while debugging a separate AWT problem

It can occur in a very trivial program, eg running the below
program under JDK 1.1.4 java_g on Solaris 2.6 SPARC

%java_g LockTest
AWT lock error (../../../../src/solaris/sun/awt_Frame.c,708) (last held by ../../../../src/solaris/sun/awt_Frame.c,678) 1
AWT unlock error (../../../../src/solaris/sun/awt_Frame.c,775,1)

It is apparently related to the TextField, since commenting out that line
and uncommenting the Label line makes the message go away

// LockTest.java

mport java.awt.*;

public class LockTest extends Panel {

        public LockTest(Frame frame) {
           //add(new Label("Test lock message"));
           add(new TextField("Test lock message"));
        }

        public static void main(String args[]) {
            Frame frame = new Frame("LockTest");
            LockTest lt = new LockTest(frame);
            frame.add("Center", lt);
            frame.pack();
            frame.setVisible(true);
        }
}


[ END phil.race@eng 06-oct-97]
------------------------------