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From "Vladimir Ivanov (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-885) [classlib][core][drlvm] unexpected LinkageError for ClassLoader.defineClass
Date Tue, 19 Dec 2006 11:56:23 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-885?page=all ]

Vladimir Ivanov updated HARMONY-885:
------------------------------------

    Attachment: ClassLoaderTest.patch

unit test

> [classlib][core][drlvm] unexpected LinkageError for ClassLoader.defineClass
> ---------------------------------------------------------------------------
>
>                 Key: HARMONY-885
>                 URL: http://issues.apache.org/jira/browse/HARMONY-885
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Vladimir Ivanov
>         Attachments: ClassLoaderTest.patch
>
>
> According to J2SE specifications for method java.lang.ClassLoader.defineClass(byte[]
b, int off, int len):
>  "Throws: ClassFormatError - if the data did not contain a valid class "
> But Harmony API +DRLVM throws LinkageError in this case.
> =================== test.java =======================
> public class test {
>     public static void main (String [] args) {
>         try {
>             byte[] array0 = new byte[] { 2, 2, 2, 2, 2, 2};
>             new CL().defineKlass(array0, 0, 3);
>             System.out.println("exception expected");
>         } catch (ClassFormatError e) {
>             System.out.println("Test passed: " + e);
>         } catch (Throwable e) {
>             System.out.println("Test failed: unexpected exception: " + e);
>             e.printStackTrace();
>         }
>     }
> }
> class CL extends ClassLoader {
>     public Class defineKlass(byte[] a, int i1, int i2) throws ClassFormatError {
>         return super.defineClass(a, i1, i2);
>     }
> } 
> =================================================
> Output:
> C:\tmp\tmp17>C:\jrockit-jdk1.5.0-windows-ia32\bin\java.exe -cp . -showversion test
> java version "1.5.0"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
> BEA WebLogic JRockit(R) (build dra-38972-20041208-2001-win-ia32, R25.0.0-75, GC: System
optimized over throughput (initial strategy singleparpar))
> Test passed: java.lang.ClassFormatError
> C:\tmp\tmp17>C:\harmony\trunk_0427\deploy\jdk\jre\bin\java.exe -cp . -showversion
test
> java version 1.5 (subset)
> (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
> Test passed: java.lang.ClassFormatError: () unexpected EOF at offset=3
> C:\tmp\tmp17>C:\harmony\drlvm\trunk\build\win_ia32_msvc_debug\deploy\jre\bin\ij -cp
. -showversion test
> Apache Harmony DRLVM HEAD-4807 (2006-05-02), Windows/ia32/msvc 1310, debug
> Test failed: unexpected exception: java.lang.LinkageError: DefineClass was called without
class name and class name could not be extracted from provid
> ed class data
> java.lang.LinkageError: DefineClass was called without class name and class name could
not be extracted from provided class data
>         at java.lang.VMClassRegistry.defineClass()
>         at java.lang.ClassLoader.defineClass()
>         at java.lang.ClassLoader.defineClass()
>         at java.lang.ClassLoader.defineClass()
>         at CL.defineKlass(test.java:17)
>         at test.main(test.java:5)
> C:\tmp\tmp17>C:\harmony\drlvm\trunk\build\win_ia32_msvc_release\deploy\jre\bin\ij
-cp . -showversion test
> Apache Harmony DRLVM HEAD-4807 (2006-05-02), Windows/ia32/msvc 1310, release
> Test failed: unexpected exception: java.lang.LinkageError: DefineClass was called without
class name and class name could not be extracted from provid
> ed class data
> java.lang.LinkageError: DefineClass was called without class name and class name could
not be extracted from provided class data
>         at java.lang.VMClassRegistry.defineClass()
>         at java.lang.ClassLoader.defineClass()
>         at java.lang.ClassLoader.defineClass()
>         at java.lang.ClassLoader.defineClass()
>         at CL.defineKlass(test.java:17)
>         at test.main(test.java:5)

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