Name: auR10023 Date: 06/27/2001



Java virtual machine fails with core dump. Here is the test demonstrating
this bug:

------t.java------

class t {
    String getTypeName() {
        return "";
    }

    public void posGet_arr_int_int() {
        Iter iter = new Iter (new Interval[] {
            new Interval(0, 20),
            new Interval(0, 20),
            new Interval(0, 20),
            new Interval(0, 20),
            new Interval(0, 20),
            new Interval(0, 20)
        });

        int [] param = null;
        int len = 0;

        String meth = "" + getTypeName();

        while ((param = iter.getNext()) != null) {
            len = param[3] - param[2];
            for (int i = 0; i < len; i++) {
            }
        }
    }

    public static void main(String[] args) {
        t obj = new t();
        obj.posGet_arr_int_int();
    }
}

class Iter {
    int [] oldVal;
    int [] curVal;
    int [] tmpVal;
    int [] result;

    Interval [] intervals; // array of the interval descriptors

    public int getParam(int pos) {
        return tmpVal[pos];
    }

    public Interval getInterval(int pos) {
        return intervals[pos];
    }

    public Iter(Interval [] intervals) {
        curVal = new int [intervals.length];
        tmpVal = new int [intervals.length];
        result = new int [intervals.length];
        oldVal = new int [intervals.length];
        this.intervals = intervals;

        for (int i = 0; i < curVal.length; i++) {
            curVal[i] = 0;
            tmpVal[i] = 0;
            oldVal[i] = 0;
        }
    }

    protected int [] getNextParameters() {
        if (curVal == null) {
            return null;
        }

        System.arraycopy(curVal, 0, tmpVal, 0, tmpVal.length);

        int i = curVal.length - 1;

        for (; i >= 0; i--) {
            curVal[i]++;
            if (intervals[i].contains(curVal[i])) {
                break;
            }
            curVal[i] = 0;
        }

        if (i < 0) {
            curVal = null;
        }

        for (i = 0; i < result.length; i++) {
            result[i] = intervals[i].getValue(tmpVal[i]);
        }
        return result;
    }

    public int [] getNext() {

        int [] res = null;
        boolean isNotValid = true;

        System.arraycopy(tmpVal, 0, oldVal, 0, tmpVal.length);

        res = getNextParameters();

        while (isNotValid && curVal != null) {
            isNotValid = false;
            for (int i = 0; i < curVal.length; i++) {
                if (!intervals[i].contains(tmpVal[i])) {
                    res = getNextParameters();
                    isNotValid = true;
                    break;
                }
            }
        }
        return res;
    }
}

class Interval {
    int from, to;

    public Interval (int from, int to){
        this.from = from;
        this.to = to;
    }

    public int getLength() {
        return to - from;
    }

    public int getValue(int param) {
        return from + param;
    }

    public boolean contains(int param) {
        return param >= 0 && param < getLength();
    }

    public boolean containsValue(int value) {
        return value >= from && value < to;
    }
}

#java -version

java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b65)
Java HotSpot(TM) Client VM (build 1.4.0-beta-b65, mixed mode)


#java -server t


Unexpected Signal : 11 occurred at PC=0xFE179308
Function=JVM_GetCPClassNameUTF+0xAD10
Library=/set/jdk-builds/JDK1.4.0beta-b65/solaris/jre/lib/sparc/server/libjvm.so

Current Java thread:

Dynamic libraries:
0x10000 /set/java/jdk1.4/solaris/bin/../bin/sparc/native_threads/java
0xff360000 /usr/lib//libthread.so.1
0xff3a0000 /usr/lib//libdl.so.1
0xff280000 /usr/lib//libc.so.1
0xff270000 /usr/platform/SUNW,Ultra-4/lib/libc_psr.so.1
0xfe000000 /set/jdk-builds/JDK1.4.0beta-b65/solaris/jre/lib/sparc/server/libjvm.so
0xff210000 /usr/lib//libCrun.so.1
0xff1f0000 /usr/lib//libsocket.so.1
0xff100000 /usr/lib//libnsl.so.1
0xff0d0000 /usr/lib//libm.so.1
0xff250000 /usr/lib//libw.so.1
0xff0b0000 /usr/lib//libmp.so.2
0xff080000 /set/jdk-builds/JDK1.4.0beta-b65/solaris/jre/lib/sparc/native_threads/libhpi.so
0xff050000 /set/jdk-builds/JDK1.4.0beta-b65/solaris/jre/lib/sparc/libverify.so
0xfe7c0000 /set/jdk-builds/JDK1.4.0beta-b65/solaris/jre/lib/sparc/libjava.so
0xff030000 /set/jdk-builds/JDK1.4.0beta-b65/solaris/jre/lib/sparc/libzip.so

Local Time = Wed Jun 27 19:18:52 2001
Elapsed Time = 2
#
# HotSpot Virtual Machine Error : 11
# Error ID : 4F530E43505002D7 01
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# Java VM: Java HotSpot(TM) Server VM (1.4.0-beta-b65 mixed mode)
#
# An error report file has been saved as hs_err_pid19659.log.
# Please refer to the file for further information.
#
Abort (core dumped)

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