Name: icC57033 Date: 12/15/97


Next program Crasher.java crashes JVM
when called with limited Java heap sizes: -ms1m -mx1m.

Those crashing is reproduceable for release
1.2S, 1.2V, 1.2W, 1.2X, 1.2Z
But can't be reproduced for 1.1.4, 1.1.5, 1.2P
  
------------------ Crasher.java --------------------
public class Crasher {
  Crasher eat[];
  
  Crasher(Crasher prev,int len) {
    eat=new Crasher[len];
    if( prev!=null ) prev.eat[0]=this;
  }
  
  public static void main(String argv[]) {
    Crasher first,last;
    int len=(new Integer("10")).intValue(); // needed for fastest crash !!
                                            // len must equal ~10 !!
for( ; ; ){
      try {
        first = new Crasher(null,len);
        last=first;
        for( ; ; ){
         last = new Crasher(last,len);
        }
      }
      catch (Throwable e) {
        first = last = null;
try {
          e.printStackTrace();
        }
        catch (Throwable ee) {
        }
      }
    }
  }
}
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To reproduce bug:

% uname -a
SunOS novo37 5.5.1 Generic_103640-08 sun4m sparc SUNW,SPARCstation-10,SX
% cd ~/tmp
% ls
Crasher.java
% java -version
java version "1.2beta2"
% java -fullversion
java full version "JDK-1.2beta2-V"
% echo $CLASSPATH
.:/export/ld32/sqe/harness_release/classes
% javac Crasher.java ; echo "status=$status"
status=0
% java -verify -ms1m -mx1m Crasher ; echo "status=$status"
java.lang.OutOfMemoryError
at Crasher.<init>(Crasher.java:6)
at Crasher.main(Crasher.java:25)
java.lang.OutOfMemoryError
SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_MAPERR [addr: 0x4]

stackbase=F0000000, stackpointer=EFFFE90C

Full thread dump:
    "CachedReference sweeper" (TID:0xeea80ce8, sys_thread_t:0x6bccc, state:CW, thread_t: t@7, sp:0xeea116c8, stack_bottom:0xeea12000, stack_size:0x21000) prio=9
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:309)
at java.lang.Runtime.waitForMemoryAdvice(Runtime.java:569)
at java.lang.ref.CachedReference$Sweeper.run(CachedReference.java:342)
at java.lang.Thread.run(Thread.java:484)
    "Finalizer" (TID:0xeea80320, sys_thread_t:0x65eec, state:CW, thread_t: t@6, sp:0xeea41728, stack_bottom:0xeea42000, stack_size:0x21000) prio=8
at java.lang.Object.wait(Native Method)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:86)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:99)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:131)
    "Reference handler" (TID:0xeea803d0, sys_thread_t:0x5623c, state:CW, thread_t: t@5, sp:0xeea716c0, stack_bottom:0xeea72000, stack_size:0x21000) prio=10
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:309)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:198)
    "SIGQUIT handler" (TID:0xeea80038, sys_thread_t:0x59c94, state:R, thread_t: t@4, sp:0xeebb1b50, stack_bottom:0xeebb2000, stack_size:0x21000) prio=0
    "main" (TID:0xeea80068, sys_thread_t:0x2141c, state:R, thread_t: t@1, sp:0xeffff1b0, stack_bottom:0xf0000000, stack_size:0x800000) prio=5 *current thread*
at java.lang.Throwable.printStackTrace0(Native Method)
at java.lang.Throwable.printStackTrace(Throwable.java:134)
at Crasher.main(Crasher.java:31)
Monitor Cache Dump:
    java.lang.ref.Reference$Lock@EEA803E0/EEAB5058: <unowned>
Waiting to be notified:
"Reference handler" (0x5623c)
    java.lang.Object@EEA80560/EEAB56E0: <unowned>
Waiting to be notified:
"CachedReference sweeper" (0x6bccc)
    java.lang.ref.ReferenceQueue$Lock@EEA80330/EEAB5538: <unowned>
Waiting to be notified:
"Finalizer" (0x65eec)
    java.io.PrintStream@EEA80EC0/EEAB80F8: owner "main" (0x2141c, 1 entry)
Registered Monitor Dump:
    utf8 hash table: <unowned>
    JNI pinning lock: <unowned>
    JNI global reference lock: <unowned>
    BinClass lock: <unowned>
    Class linking lock: <unowned>
    Code rewrite lock: <unowned>
    Heap lock: <unowned>
    Monitor cache expansion lock: <unowned>
    Thread queue lock: <unowned>
    Monitor registry: owner "main" (0x2141c, 1 entry)
Abort
status=-2147483642
%
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Hook 5(hook5): test
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