STD: JDB "where all" command aborts on system thread

The JDB "where all" command aborts early if it encounters a thread
that does not have a Java frame. For example, "Signal dispatcher"
in the below example.

harmless build/solaris [39] % /usr/local/java/jdk1.2beta4.1/solaris/bin/appletviewer_g -debug http://wombat/~dlong/solar/index.html
 
Warning: disabling security due to current limitations in debugger.
 
Initializing jdb...
0xa3:class(sun.applet.AppletViewer)
> where all
Signal dispatcher:
[Internal debug-agent exception: java.lang.InternalError: JVMDI_ERROR_NO_MORE_FRAMES - during command processing]Internal exception:
java.lang.Exception: java.lang.InternalError: JVMDI_ERROR_NO_MORE_FRAMES
        at sun.tools.debug.RemoteAgent.getReply(Compiled Code)
        at sun.tools.debug.RemoteAgent.dumpStack(Compiled Code)
        at sun.tools.debug.RemoteThread.getStack(Compiled Code)
 
        at sun.tools.debug.RemoteThread.dumpStack(Compiled Code)
        at sun.tools.ttydebug.TTY.dumpStack(Compiled Code)
        at sun.tools.ttydebug.TTY.where(Compiled Code)
        at sun.tools.ttydebug.TTY.executeCommand(Compiled Code)
        at sun.tools.ttydebug.TTY.<init>(Compiled Code)
        at sun.tools.ttydebug.TTY.main(Compiled Code)
        at java.lang.reflect.Method.invoke(Native Method)
        at sun.applet.AppletViewer.debugSession(Compiled Code)
        at sun.applet.AppletViewer.main(Compiled Code)
>

dean.long@Eng 1998-08-31