When heavy load test applies to JVM(1.5b55), it crashes at register allocation.

REPRODUCE :

  1) Compile the attached program

  
---- Test.java ---->

class Test{

    static void goToHeaven(double arg){

      StringBuffer buf = new StringBuffer();

      if (arg < 0.0d){
         buf.append('-');
         arg = -arg;
      }

      int i3 = (int)(arg * 2.0d);

      buf.append(i3);

    }

    public static void main(String[] args){

    // force compilation
      (new StringBuffer()).append(1);

    // Now, go to heaven
       goToHeaven(0.5);

    }

}

<------------------

  
2) Launch the java or java_g command with options,
    -Xcomp and -XX:-BackgroundCompilation

    ex.
      "java -Xcomp -XX:-BackgroundCompilation Test"


  You will see the following crash message.

2-1) java command

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0x2000000001089ca0, pid=9001, tid=2305843011035756752
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.5.0-beta3-b55 compiled mode)
# Problematic frame:
# V [libjvm.so+0xd7dca0]
#
# An error report file with more information is saved as hs_err_pid9001.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp



2-2) java_g command

# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/reg_split.cpp:802]
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# Internal Error (/BUILD_AREA/jdk1.5.0/hotspot/src/share/vm/opto/reg_split.cpp, 802), pid=9024, tid=230584301105253
3968
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.5.0-beta3-b55-debug compiled mode)
#
# Error: assert(def != __null,"Using Undefined Value in Split()
")
# An error report file with more information is saved as hs_err_pid9024.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#


CONFIGURATION ;

   OS : RedHat Enterprise Linux AS 3.0
   JRE : 1.5b55

java version "1.5.0-beta3"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta3-b55)
Java HotSpot(TM) 64-Bit Server VM (build 1.5.0-beta3-b55, compiled mode)



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