Name: elR10090 Date: 10/16/2001


Ivan Popov <###@###.###>

Following tests

    nsk/jdi/ExceptionEvent/catchLocation/location001
    nsk/jdi/ExceptionEvent/catchLocation/location002
    nsk/jdi/ExceptionEvent/exception/exception001

failed to pass against Merlin since build b81 on all platforms.
For build b80 and earlier all these tests pass successfully.

These tests check that ExceptionEvent is received by debugger for
each kind of exceptions thrown into debuggee including user defined
and system exceptions.

Before the build b81 all this tests passed because each expected event
was received only once. Since build b81 too many exception events
are generated by debuggee for a StackOverflowError exception.
It takes too long time for the test to handle all these events
and the tests get timed out.

I slightly modified one of the tests to count how many times event is
received for each kind of the tested exceptions. Here are the results
(on Solaris/Sparc):

  user defined exceptions:
    nsk.jdi.ExceptionEvent.catchLocation.location001aException received 1 times
    nsk.jdi.ExceptionEvent.catchLocation.location001aError received 1 times
    nsk.jdi.ExceptionEvent.catchLocation.location001aThrowable received 1 times
  system exceptions:
    java.lang.NumberFormatException received 3 times
    java.lang.StackOverflowError received 4046 times

This shows that events for system exceptions are received multiply times,
especially for StackOverflowError which was thrown by a deep recursion.
Number of events for StackOverflowError exception varies on different
tlatforms:

    Solaris/Sparc: ~4000
    Solaris/x86: ~6000
    Linux-i386: ~50000
    Windows: ~6000

It seems that event for an exception is received each time when
debuggee returns from a (recursive) call of a method by the exception.
For a deep recursion we get such a big number of ExceptionEvents.

Below is log of the test location001 on Solaris/Sparc:

------------------------------------------------------------

<...>
Getting loaded classes in debuggee
Getting reference to main thread
Creating ExceptionRequest
Cleaning event queue
Starting eventHandler
Enabling ExceptionRequest
Sending command: go
Waiting for command: done

ExceptionEvent for nsk.jdi.ExceptionEvent.catchLocation.location001aException is
received: 1
debugee.stderr> location001aException is thrown
ExceptionEvent for nsk.jdi.ExceptionEvent.catchLocation.location001aError is
received: 1
debugee.stderr> location001aError is thrown
ExceptionEvent for nsk.jdi.ExceptionEvent.catchLocation.location001aThrowable is
received: 1
debugee.stderr> location001aThrowable is thrown
ExceptionEvent for java.lang.NumberFormatException is received: 1
ExceptionEvent for java.lang.NumberFormatException is received: 2
ExceptionEvent for java.lang.NumberFormatException is received: 3
debugee.stderr> NumberFormatException is thrown
ExceptionEvent for java.lang.StackOverflowError is received: 1
ExceptionEvent for java.lang.StackOverflowError is received: 2
ExceptionEvent for java.lang.StackOverflowError is received: 3
ExceptionEvent for java.lang.StackOverflowError is received: 4
ExceptionEvent for java.lang.StackOverflowError is received: 5
<...>
ExceptionEvent for java.lang.StackOverflowError is received: 4040
ExceptionEvent for java.lang.StackOverflowError is received: 4041
ExceptionEvent for java.lang.StackOverflowError is received: 4042
ExceptionEvent for java.lang.StackOverflowError is received: 4043
ExceptionEvent for java.lang.StackOverflowError is received: 4044
ExceptionEvent for java.lang.StackOverflowError is received: 4045
ExceptionEvent for java.lang.StackOverflowError is received: 4046
debugee.stderr> StackOverflowError is thrown

Waiting for all expected events received
eventHandler completed

Expected nsk.jdi.ExceptionEvent.catchLocation.location001aException received
once
Expected nsk.jdi.ExceptionEvent.catchLocation.location001aError received once
Expected nsk.jdi.ExceptionEvent.catchLocation.location001aThrowable received
once

FAILURE 16: Too many times java.lang.NumberFormatException received: 3
FAILURE 18: Too many times java.lang.StackOverflowError received: 4046

Disabling event request
Sending command: quit
Finally cleaning event queue
Waiting for debuggee terminating
Debuggee PASSED with exit code: 95
# ERROR: TEST FAILED

------------------------------------------------------------

These tests belongs to testbase_nsk located here:

    /net/sqesvr.sfbay/export/vsn/VM/testbase/testbase_nsk.v14

To reproduce the bug run 'doit.sh' script located here:

    /net/sqesvr.sfbay/export/vsn/GammaBase/Bugs/<this bug number>

Use:
    sh doit.sh $JAVA_HOME
Where:
    $JAVA_HOME: points to JDK-1.4 (b83)

======================================================================

Name: dkR10014 Date: 10/25/2001


======================================================================
  ###@###.### 10.26.2001
  
  This bug affects the following testbase_nsk tests:
  
  nsk/jdb/caught_exception/caught_exception001
  nsk/jdb/uncaught_exception/uncaught_exception001



======================================================================

Name: elR10090 Date: 11/05/2001


This bug also affects the following testbase_nsk tests:

    nsk/jvmdi/events/exception001
    nsk/jvmdi/events/excatch001

The tests will be available in the next release v14r09 this week.

Pavel N. Vysotski, ###@###.###


======================================================================