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From "Catherine Hope (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-6321) [VM] -Xbootclasspath/a is not appended properly with IBM VMI
Date Thu, 27 Aug 2009 16:50:59 GMT
[VM] -Xbootclasspath/a is not appended properly with IBM VMI

                 Key: HARMONY-6321
                 URL: https://issues.apache.org/jira/browse/HARMONY-6321
             Project: Harmony
          Issue Type: Bug
          Components: VM
         Environment: all
            Reporter: Catherine Hope
            Priority: Minor

Running Harmony with IBM VMI and option -Xbootclasspath/a does not produce the expected bootclasspath,
> java -Xbootclasspath/a:<dir> <class>
gives the following bootclasspath (org.apache.harmony.boot.class.path property):
remaining api jars

So the appended directory appears between the kernal jars and the api ones, instead of at
the end of the path.
The problem does not occur with DRLVM because the bootclasspath is set up as follows: 

in the launcher
- passes contents of harmonyvm.properties (containing luni-kernal and security jars) and command-line
arguments to CreateJavaVM

in luniglob (called on JNI_OnLoad)
- retrieves org.apache.harmony.boot.class.path property from VM and _appends_ the api jars
from bootclasspath.properties
- sets org.apache.harmony.boot.class.path property to the new value

with Harmony with IBM VM
- org.apache.harmony.boot.class.path property contains the parsed and set bootclasspath, api
jars are added at the end

with Harmony with DRL VM
- org.apache.harmony.boot.class.path property is null, api jars are added and then this value
is used later by classloader.bootstrap_components_classpath to combine with the other components
and form sun.boot.class.path

There's a difference in how the two bootclasspath properties sun.boot.class.path and org.apache.harmony.boot.class.path
are being used by DRLVM and IBM VMI - DRLVM uses the sun.boot.class.path as the definitive
one, assembled from the contents of org.apache.harmony.boot.class.path, and IBM VMI uses the
org.apache.harmony.boot.class.path completely, and sun.boot.class.path is null.

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