OS version: 5.6

Product Name: JDK 1.1.6

Product version: java version "1.1.6", java full version
"Solaris_JDK_1.1.6_03"

This problem can be reproduced using Solaris_JDK_1.2.1_03 as well.

Hardware platform: Ultra 60, E450

Test Case : Test.java attached with the bug report.

Files Attached with bug report:
1. Core files (jdk_1.2.1_03.core.Z, core.int)
2. Stackdump using Solaris_JDK_1.2.1_03(stackdump-jdk1.2)
3. Test case(Test.java)

Here are the steps to reproduce the problem:

1. compile the testcase (Test.java)
   and run it
2. Tear the menu ("Test to Tear")
3. Move that menu
4. Again tear the menu
3. Select the exit menu option.
   
This results in the VM crash.

Full problem description:
When we perform the above operation in our client GUI we get the
following core dump:

__lwp_suspend2(0x0, 0x6, 0xe98c2aa0, 0xb, 0xe98c3e54, 0xe98c3e34),
at 0xef3b952c
  [2] __libthread_segvhdlr(0xb, 0xe98c2d58, 0xe98c2aa0, 0xe98c29e0,
0xef645250, 0xe98c3e34), at 0xef632ebc
  ---- called from signal handler with signal 11 (SIGSEGV) ------
  [3] XtSetKeyboardFocus(), at 0xe9c37f34
  [4] XtCallCallbackList(0x11cbf48, 0x1195908, 0x0, 0x0, 0x0, 0x0), at
0xe9c1f99c
  [5] XtPhase2Destroy(0x11cbf48, 0x517910, 0x5400512, 0xe9c7016c,
0xe97ef278, 0x0), at 0xe9c28200
  [6] _XtDoPhase2Destroy(0x5168a8, 0x1, 0x0, 0x0, 0x0, 0x11f7a18), at
0xe9c28418
  [7] XtDispatchEvent(0x1, 0x0, 0xe9c2d7f4, 0xe9c7016c, 0x0, 0x1), at
0xe9c2de60
  [8] XtAppProcessEvent(0x5168a8, 0x0, 0xe9929378, 0x1, 0xe9c7016c,
0x0), at 0xe9c3bc4c
  [9] 0xe9929524(0x102ec88, 0xe996dabc, 0xe99654ac, 0xe996da3c,
0xe9960f04, 0x1), at 0xe9929523
  [10] JITUnsynchronizedNativeStub(0xea426548, 0x124ec0, 0x51a9b4, 0x1,
0x0, 0x0), at 0xee54c814
  [11] JITInvokeCompiledMethod(0xea426548, 0x124ec0, 0x1, 0xe98c3c94,
0xef6e02c0, 0xe98c3bac), at 0xee54c748
  [12] finish_invokevirtual(0xe98c3bc4, 0xe98c3c94, 0x51a9dc, 0x0,
0xe98c3bac, 0x51a9b4), at 0xef7286d0
  [13] ExecuteJava(0xe98c3bc4, 0xe98c3c94, 0x7fffffff, 0x29, 0x51a9b4,
0x128970), at 0xef719610
  [14] do_execute_java_method_vararg(0xe98c3c94, 0xef749309, 0x0, 0x0,
0x0, 0x51a9a0), at 0xef6f24cc
  [15] execute_java_dynamic_method(0xe98c3c94, 0xea426548, 0xef749304,
0xef749308, 0xef74c800, 0xef62e7bc), at 0xef6f1afc
  [16] 0xef70d810(0xea426548, 0xef749308, 0x22000, 0xef645250, 0x4,
0x512ed8), at 0xef70d80f
  [17] 0xef724a3c(0x0, 0xe9f03d80, 0x0, 0xef64dea0, 0x1, 0xfe401000), at
0xef724a3b


Thread dump:
SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_MAPERR [addr: 0x154]

        stackbase=E9943D74, stackpointer=E99427EC