Name: szC45993 Date: 08/05/99



+StressDerivedPointers and +ZapDeadCompiledLocals debugging flags, used
for Tonga/src/nsk/arguments/oopmap003 test, crash java_g
(HotSpot VM 1.0.1, build debug a) on Solaris
(SunOS novo63 5.7 Generic_Patch sun4u sparc SUNW,Ultra-1System = SunOS).
See log and source below.

novo63% /net/novo73/export/home2/java/latkin/hotspot/jdk1.2.2W-hs1.0.1A/bin/javac oopmap003.java
novo63% /net/novo73/export/home2/java/latkin/hotspot/jdk1.2.2W-hs1.0.1A/bin/java_g -verify -XX:+StressDerivedPointers -XX:+ZapDeadCompiledLocals oopmap003
VM option '+StressDerivedPointers'
VM option '+ZapDeadCompiledLocals'

...

781787788776777783784785786773779780782783789776777778779785786787774775781782783784785777778779780781787788775776777783784785786773779780781782783789776777778779785786787774775781782783784785777778779780781787788775776777783784785786773779780781782783789776777778779785786#
# HotSpot Virtual Machine Error, assertion failure
#
# assert(_younger_window != 0, "Younger window should be available")
# Error happened during: scavenge
#
# Error ID: /net/mizu/usr/re/hotsparc1.0.1/src/solaris_only/hotsparc_beta_jvmg/build/solaris/../../src/cpu/sparc/vm/frame_sparc.cpp, 36 [ Patched ]
#
Dumping core....
Abort (core dumped)
novo63%

SOURCE:
========

//--------------------- oopmap003.java:
// Ident: @(#)oopmap003.java 1.1 99/07/06
// Copyright 07/06/99 Sun Microsystems, Inc. All Rights Reserved

import java.io.PrintStream;

public class oopmap003 {
  final static int mask=0x1FFF;
  final static int delta=123;
  final static int Len=mask-2*delta-1;
  static java.util.Random rand;
  public int ifld2 = 776;

  static int nextInt() {
int res=(rand.nextInt()&mask)-delta;
return res;
  }

 static int randomWrite(Object[] arr) {
int len=arr.length, n=12345;
for (int k=0; k<len; k++) {
n=nextInt();
if ((n>=0)&&(n<len)) {
arr[n]=new Integer(n);
if ((n<0)||(n>=len)) return 1;
}
}
return 0;
  }

 static int prc3(int i, int j) {
oopmap003 cs003 = new oopmap003();
//#############################################
return 2 * i + 1 + cs003.ifld2;
//#############################################
 }

 static int randomRead1(Object[] arr, int i) {
int len=arr.length, n=54321;
int idiv1=0;
int idiv2=0;
for (int k=0; k<len; k++) {
n=nextInt();
if ((n>=0)&&(n<len)) {
Object obj=arr[n];
//#############################################
//#############################################
// SPECIAL INSERTION (Please, don't remove)//##
                                           //##
idiv1 = k%7; //##
                                           //##
  idiv1 = prc3(idiv1,idiv1); //##
                                           //##
idiv2 = k%5; //##
System.out.print(idiv1-idiv2); //##
                                           //##
//#############################################
//#############################################
if ((n<0)||(n>=len)) return 1;
if ( (obj!=null) && (((Integer)obj).intValue()!=n) ) return 3;
}
}
return 0;
  }

  public static int run(String argv[], PrintStream out) {
rand=new java.util.Random();
rand.setSeed(123456789);
Object[] arr = new Object[Len];
if ((randomWrite(arr)!=0)) return 1;
if ((randomRead1(arr,2)!=0)) return 1;
return 0;
  }

  static public void main(String argv[]) {
System.exit(run(argv, System.out)+95);
  }

}
//---------------------

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




###@###.### 2000-03-29

This assertion is occuring with hotspot server binary in comp mode. so I am updating the existing bug.

If anybody doesn't want this to show up in runtime_system sub-category, I can open a new bug for the same assertion, in compiler2 subcategory

To reproduce :

  1. Go to /net/toasteroven/export/tests/runThese/bugs/4259961
  2. Set you classpath to - /net/jde4.eng/export/jde4-1/nightly_spec_runs/spec/v20:/net/jde4.eng/export/jde4-1/nightly_spec_runs/spec/v20/class

  3. Execute doit



testObjectArray: OK
checkInstanceOf: OK
checkInterfaceInstanceOf: OK
testWaitNull: OK
testVarAndMethodNameClash: OK
testMisk: OK
testGC: OK
****** PepTest completed ******
File output byte count = 0 checksum = 0

#### IO Statistics for this Run ####
## IO time : 0.0 seconds
## No. of File opens : 0
## No. of Byte Reads from cache : 0
## No. of Byte Reads from File : 0
## No. of Byte Reads from Url : 0
#### Cumulative Cache Stats: N 0, B 0, H 0, M 0
#### No. of HTTP retries : 0

Run 0 end. Total memory=3604480 free memory=3455896
----------------------------------
spec.io.FileInputStream: Caught exception in constructor: java.io.FileNotFoundException: spec/benchmarks/_200_check/validity100.dat (No such file or directory)
trying to open: validity100.dat
spec.io.FileInputStream: Attempting recovery with System.runFinalizatio

#
# HotSpot Virtual Machine Error, assertion failure
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# assert(_younger_window != 0, "Younger window should be available")
#
# Error happened during: mark sweep
#
# Error ID: /net/sqesvr/vsn/users/fhsu/ws-hs2.0/src/cpu/sparc/vm/frame_sparc.cpp,
 37 [ Patched ]
#
# Problematic Thread: prio=5 tid=0x12c358 nid=0x4 runnable
#


dhana.varadharaj@Eng 2000-05-05

The same assertion happens with Compiler2 binary with Mauve tests. A doit script to reproduce the bug is included in /net/sqesvr/vsn/GammaBase/Bugs/4259961 directory.

Execute doit.mauve.