Name: abR10010 Date: 12/13/2000


The nsk/jdi/ReferenceType/fields/fields003 test causes crash of
the HotSpot Client VM (build 1.3.1beta-b11).

This test cheks the fields() method of the ReferenceType interface
of the com.sun.jdi package for unloaded class.

The test loads a class, gets a ReferenceType instance for this
class, then enforces the class to be unloaded and calls the
equals() method - the com.sun.jdi.ObjectCollectedException
should be thrown in this case.
In fact, the HotSpot VM crashes while the test enforces the class
to be unloaded.

In order to unload the checked class the test causes the memory
exhausting so the GC would unload the checked class.

This failure happens on Solaris-Sparc.

The Merlin HotSpot VM (build 1.4beta-B44) passes this test.

To reproduce the bug on Solaris run doit.sh in
/net/sqesvr/export/vsn/GammaBase/Bugs/4397763.

The first parameter for doit.sh should be JDK root directory
(e.g. /java/jdk1.3.1/solsparc) and the other parameter(s) -
VM option(s) (optional).
  
See logs:

For Ladybird:

% doit.sh /export/java/dest/jdk1.3.1-b11/solsparc
java version "1.3.1beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1beta-b11)
Java HotSpot(TM) Client VM (build 1.3.1beta-b11, mixed mode)
==> nsk/jdi/ReferenceType/fields/fields003 test LOG:
--> test checks fields() method of ReferenceType interface
    of the com.sun.jdi package for UNLOADED class

VirtualMachineManager: version 1.4
LaunchingConnector:
    name: com.sun.jdi.CommandLineLaunch
    description: Launches target using Sun Java VM command line and attaches to
it
    transport: dt_socket
Arguments: {home=home=/net/java7/d/bond/java/dest/jdk1.3.1-b11/solsparc,
vmexec=vmexec=java, options=options=,
main=main=fields003a -vbs, quote=quote=", suspend=suspend=true}
--> fields003: fields003a debugee launched
**> fields003a: debugee started!
**> fields003a: waiting for "checked class dir" info...
--> fields003: debugee's "ready0" signal recieved!
--> fields003a: checked class loaded:fields003b
**> fields003a: waiting for "continue" or "quit" signal...
--> fields003: debugee's "ready1" signal recieved!
--> fields003: getting ReferenceType object for loaded checked class...
--> fields003: checked class FOUND: fields003b
--> fields003: waiting for "ready2" or "not_unloaded" signal from debugee...
**> fields003a: "continue" signal recieved!
**> fields003a: enforce to unload checked class...
##> fields003: UNEXPECTED debugee's signal (not "ready2")!
##> fields003: output from debugee:
#
# HotSpot Virtual Machine Error, Internal Error
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# Error happened during: mark sweep
#
# Error ID: 53414645504F494E540E4350500113 01
#
# Problematic Thread: prio=5 tid=0x9f678 nid=0x4 runnable
#

==> nsk/jdi/ReferenceType/fields/fields003 test FAILED

(Error ID: safepoint.cpp, 275)

NOTES.
    Sometimes the test hangs in the same place instead of
    causing crash of HotSpot VM.


For Merlin:


% doit.sh /export/java/dest/jdk1.4.0beta-b44/solsparc
java version "1.4.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0beta-b44)
Java HotSpot(TM) Client VM (build 1.4beta-B44, mixed mode)
==> nsk/jdi/ReferenceType/fields/fields003 test LOG:
--> test checks fields() method of ReferenceType interface
    of the com.sun.jdi package for UNLOADED class

VirtualMachineManager: version 1.4
LaunchingConnector:
    name: com.sun.jdi.CommandLineLaunch
    description: Launches target using Sun Java VM command line and attaches to
it
    transport: dt_socket
Arguments: {home=home=/net/java7/d/bond/java/dest/jdk1.4.0beta-b44/solsparc,
vmexec=vmexec=java, options=options=,
main=main=fields003a -vbs, quote=quote=", suspend=suspend=true}
--> fields003: fields003a debugee launched
**> fields003a: debugee started!
**> fields003a: waiting for "checked class dir" info...
--> fields003: debugee's "ready0" signal recieved!
--> fields003a: checked class loaded:fields003b
**> fields003a: waiting for "continue" or "quit" signal...
--> fields003: debugee's "ready1" signal recieved!
--> fields003: getting ReferenceType object for loaded checked class...
--> fields003: checked class FOUND: fields003b
--> fields003: waiting for "ready2" or "not_unloaded" signal from debugee...
**> fields003a: "continue" signal recieved!
**> fields003a: enforce to unload checked class...
**> fields003a: checked class unloaded!
**> fields003a: waiting for "quit" signal...
--> fields003: debugee's "ready2" signal recieved!
--> fields003: check that checked class has been unloaded realy...
--> fields003: checked class has been unloaded realy: fields003b
--> fields003: check ReferenceType.fields() method for unloaded class...
--> fields003: PASSED: expected Exception thrown -
com.sun.jdi.ObjectCollectedException
--> fields003: waiting for debugee finish...
**> fields003a: "quit" signal recieved!
**> fields003a: completed!
--> fields003: expected Debugee's exit status - 95

==> nsk/jdi/ReferenceType/fields/fields003 test PASSED


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