A customer has found out the operation which can make jdb freeze easily.

REPRODUCE :
 1) Please compile the attached test program(suspendtest.java)
 2) launch "jdb suspendtest"
    then please track the following commands for jdb

goedel[13]% jdb suspendtest
Initializing jdb ...
> run
run suspendtest
Set uncaught java.lang.Throwable
Set deferred uncaught java.lang.Throwable
>
VM Started: issue suspend()
issue resume()
                       <==== Here, press "enter"
> threads
Group system:
  (java.lang.ref.Reference$ReferenceHandler)0xdd Reference Handler cond. waiting
  (java.lang.ref.Finalizer$FinalizerThread)0xdc Finalizer cond. waiting
  (java.lang.Thread)0xdb Signal Dispatcher running
Group main:
  (java.lang.Thread)0x1 main cond. waiting
  (suspendtest)0x10b Thread-0 running
  (suspendtest)0x10c Thread-1 running
> thread 0x10c
Thread-1[1] where
Current thread isn't suspended.
Thread-1[1] suspend

<< Here, NO REPLY >>

^Cgoedel[14]%
###@###.### 2005-2-03 00:33:15 GMT