Name: yyT116575 Date: 10/12/2000


java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

I wrote a C program which creates a JVM using the JNI invocation
interfaces . The hotspot JVM crashes C program's exit hook has called
after Java program called System.exit() .

Using classic JVM and following each case doesn't crashes hotspot JVM:

  1. Don't call System.exit() in Java Program .
  2. Don't set exit hook to JavaOption in C Program .

I compiled C program with Microsoft VC++ version 5 .
I run C program , and got following message ( with VC++ alart dialog
that notes 'abnormal program termination' ):

C:\>Jcmd
Starting JVM...
FINISHED CallStaticVoidMethod
CALL System.exit
CALLED y_exit
#
# HotSpot Virtual Machine Error, Internal Error
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# Error ID: 4A4156410E435050012E
#


the reproductable code is follow:


/*** C program that named Jcmd.c ***/
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <jni.h>

// JVM exit code
static int exitValue = 0;
FILE *fp;

void (JNICALL y_exit)(jint code) {
    printf("CALLED y_exit\n");
    exitValue = (int)code;
}

jint (JNICALL y_fprintf)(FILE *fp, const char *format, va_list args) {
    jint rc;
    if (fp == NULL)
        if ((fp = fopen("vm.out", "w")) == NULL) return -1;
    rc = vfprintf(fp, format, args);
    fflush(fp);
    return rc;
}

int main(int argc, char *argv[]) {
    JNIEnv *env;
    JavaVM *jvm;
    JavaVMInitArgs vm_args;
    jclass clazz;
    jobjectArray str_array;
    jmethodID mid;
    jint ret;
    JavaVMOption options[3];

    options[0].optionString = "-Djava.class.path=.";
    options[1].optionString = "exit";
    options[1].extraInfo = y_exit;
    options[2].optionString = "vfprintf";
    options[2].extraInfo = y_fprintf;

    vm_args.version = JNI_VERSION_1_2;
    vm_args.nOptions = 3;
    vm_args.options = options;
    vm_args.ignoreUnrecognized = JNI_TRUE;

    // create JavaVM
    ret = JNI_CreateJavaVM(&jvm, (void **)&env, &vm_args);
    if (ret < 0) {
        printf("Can't create JVM. Error: %ld\n", ret);
        return(1);
    }

    // find Test.class
    clazz = (*env)->FindClass(env, "Test");
    if (clazz == 0) {
        printf("Can't locate the Test class.Exiting...\n");
        return(1);
    }

    // get main method
    mid = (*env)->GetStaticMethodID(env, clazz,"main","([Ljava/lang/String;)V");
    if (mid == 0) {
        printf("Can't locate the main method. Exiting...\n");
        return(1);
    }
    printf("Starting JVM...\n");

    // call main method
    (*env)->CallStaticVoidMethod(env, clazz, mid, str_array);
    printf("FINISHED CallStaticVoidMethod\n");

    // destroy JavaVM
    (*jvm)->DestroyJavaVM(jvm);
    printf("FINISHED DestroyJavaVM\n");

    return(exitValue);
}
/*** End of C program ***/


/*** Java program that named Test.java ***/
public class Test extends Thread {
    public Test() {
        start();
        // If comment out above start() method and call System.exit(0)
        // this position , JVM crashes too .
        //System.exit(0);
    }

    public void run() {
        System.out.println("CALL System.exit");
        System.exit(0);
        System.out.println("System.exit.");
    }

    public static void main(String[] argv) {
        new Test();
    }
}
/*** End of Java program ***/
(Review ID: 110685)
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