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From "Serguei Zapreyev (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-1800) Harmony bug [classlib][drlvm] VM crashes when started via Runtime.exec(...) with null in cmd or envp elements
Date Wed, 11 Oct 2006 06:50:22 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-1800?page=all ]

Serguei Zapreyev updated HARMONY-1800:
--------------------------------------

    Attachment: H1800.jlR_impl.txt

The patch to fix the issue.

> Harmony bug [classlib][drlvm] VM crashes when started via Runtime.exec(...) with null
in cmd or envp elements
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-1800
>                 URL: http://issues.apache.org/jira/browse/HARMONY-1800
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>         Environment: Windows and Linux
>            Reporter: Vera Petrashkova
>         Attachments: H1800.jlR_impl.txt
>
>
> According to J2SE API specifications of java.lang.Runtime
> exec(String[] cmdarray)
> Throws:
>     NullPointerException - If cmdarray is null, or one of the elements of cmdarray is
null
> exec(String[] cmdarray, String[] envp)
> exec(String[] cmdarray, String [] envp, File dir)
> Throws: 
>     NullPointerException - If cmdarray is null, or one of the elements of cmdarray is
null, or one of the elements of envp is null
> But, exec(...) do not throw NullPointerException when some element of cmdarray is null
or one of the element
> of envp is null. Besides, started VM crashes.
> Code for reproducing:
> import junit.framework.TestCase;
> import java.io.*;
> public class testExec1 extends TestCase {
>     
>     public void testExec() {
>         String [] cmdL = new String[5];
>         cmdL[0] = System.getProperty("java.home")+File.separator+"bin"+File.separator+"java";
>         cmdL[1] = "-classpath";
>         cmdL[2] = ".";
>         cmdL[3] = "testExec1_App"; 
>         cmdL[4] = null;
>         try {
>             Process p = Runtime.getRuntime().exec(cmdL);
>             p.waitFor();
>             int ans = p.exitValue();
>             InputStream is = p.getErrorStream();
>             int toRead = is.available();
>             byte[] out = new byte[100]; 
>             int sz = 0;
>             while (true) {
>                 int r = is.read();
>                 if (r == -1) {
>                     break;
>                 }
>                 out[sz] = (byte)r;
>                 sz++;
>                 if (sz == 100) {
>                     break;
>                 }
>             }
>             System.out.println("========Application error message======");
>             System.out.println(new String (out, 0, sz));
>             System.out.println("=======================================");
>             fail("NullPointerException was not thrown. exitValue = " + ans);
>         } catch (NullPointerException e) {
>         } catch (Exception e) {
>             e.printStackTrace();
>             fail("Unexpected exception was thrown: " + e);     
>         }
>      }
> }
> class testExec1_App {
>     public static void main(String[] args) {
> System.out.println("-----------Ok----------");
>          System.exit(0);
>     }
> }
> Output on RI:
> ================== 
> java version "1.5.0_06"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
> Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
> .
> Time: 0
> OK (1 test)
> Output on Harmony:
> ================
> Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation or
its licensors, as applicable.
> java version "1.5.0"
> pre-alpha : not complete or compatible
> svn = r453981, (Oct  9 2006), Windows/ia32/msvc 1310, release build
> http://incubator.apache.org/harmony
> ....VM Crashed!
> Windows reported exception: ACCESS_VIOLATION
> Registers:
>     EAX: 0x00000000, EBX: 0x00000004, ECX: 0x006d6808, EDX=0x0013e600
>     ESI: 0x00000400, EDI: 0x00000000, ESP: 0x0013e560, EBP=0x006d6bb8
>     EIP: 0x005296f6
> Stack trace:
>         1: Java_java_lang_Runtime_00024SubProcess_createProcess0 (??:-1)
>         2: apr_day_snames (??:-1)
> <end of stack trace>
> Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation or
its licensors, as applicable.
> java version "1.5.0" 
> pre-alpha : not complete or compatible
> svn = r453981, (Oct  9 2006), Linux/ia32/gcc 3.3.3, release build
> http://incubator.apache.org/harmony
> .========Application error message======
> SIGSEGV in VM code.
> Stack trace:
>         1: strlen (??:-1)
>         2: IP is 0x4113E77D <native code>
>         3: java/lang
> =======================================
> F
> Time: 0.325
> There was 1 failure:
> 1) testExec(testExec1)junit.framework.AssertionFailedError: NullPointerException was
not thrown. exitValue = 129
>         at testExec1.testExec(testExec1.java:35)
>         at java.lang.reflect.VMReflection.invokeMethod(Native Method)
>  
> FAILURES!!!
> Tests run: 1,  Failures: 1,  Errors: 0

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