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Posted to commits@harmony.apache.org by "Jin Yang (JIRA)" <ji...@apache.org> on 2010/09/26 14:34:34 UTC
[jira] Updated: (HARMONY-6659) [classlib][luni]Launcher causing JVM
to silently ignore unrecognized options
[ https://issues.apache.org/jira/browse/HARMONY-6659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jin Yang updated HARMONY-6659:
------------------------------
Attachment: HARMONY-6659.diff
> [classlib][luni]Launcher causing JVM to silently ignore unrecognized options
> ----------------------------------------------------------------------------
>
> Key: HARMONY-6659
> URL: https://issues.apache.org/jira/browse/HARMONY-6659
> Project: Harmony
> Issue Type: Bug
> Components: Classlib
> Reporter: Jin Yang
> Attachments: HARMONY-6659.diff
>
>
> Harmony launcher instructs the JVM to discard any unrecognized argument silently, this hides incorrectly formed command lines and can lead to tests passing (e.g. those that contain -Xcompressedrefs) when they should fail. To see the problem simply add an unrecognized VM option to the command line, e.g.
> Command: '.\java -XthisShouldBarf -version'
> ` Expected Output:
> Unrecognized option: -XthisShouldBarf
> Could not create the Java virtual machine.
> Actual Output:
> Apache Harmony Launcher : (c) Copyright 1991, 2010 The Apache Software Foundation or its licensors,as applicable.
> java version "1.6.0"
> Harmony Virtual Machine Element (20100920_64951)
> IBM J9 VM (2.6)
> IBM J9 2.6 Windows XP x86-32 (JIT enabled, AOT enabled)
> J9VM - R26_head_20100917_1044_B64808
> JIT - dev_20100903_16914
> GC - R26_head_20100916_1755_B64769
> J9CL - 20100920_64951
> Harmony - Unknow
> It can be fixed by changing the argument #6 from JNI_TRUE to JNI_FALSE in lancher's calling
> invocation
> (PORTLIB, argc, argv, handle, JNI_VERSION_1_4, JNI_TRUE, mainClass,
> classArg, propertiesFileName, isStandaloneJar, vmdllsubdir, versionFlag);
> This argument is to inidicate JVM whether should ignore any unrecognized option.
> This change will only affect IBM JVM because it's sensitive to this argument.
> While DRLVM will not be affected because it doesn't use this option(passing JNI_TRUE or JNI_FALSE will have same effect, DRLVM will always fail on any unrecognized option)
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