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From "George Timoshenko (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-2485) [drlvm][jit][opt] NPE on EM64T with OPT
Date Wed, 06 Dec 2006 07:57:21 GMT
[drlvm][jit][opt] NPE on EM64T with OPT
---------------------------------------

                 Key: HARMONY-2485
                 URL: http://issues.apache.org/jira/browse/HARMONY-2485
             Project: Harmony
          Issue Type: Bug
          Components: DRLVM
         Environment: EM64T
            Reporter: George Timoshenko
            Priority: Critical
         Attachments: HARMONY-2485.patch

Any run with OPT on EM64T gives failures like this:

$HRMN_d -Xem:opt  Hello
Uncaught exception in main:
java.lang.NullPointerException
        at java.net.URLClassLoader.findClassImpl(URLClassLoader.java)
        at java.net.URLClassLoader$4.run(URLClassLoader.java)
        at java.net.URLClassLoader$4.run(URLClassLoader.java:1)
        at java.security.AccessController.doPrivilegedImpl(Unknown Source)
        at java.security.AccessController.doPrivileged(Unknown Source)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:621)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader$SystemClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
FAILED to invoke JVM.


The problem was triggered by the fix of HARMONY-2158.
After this patch DrlVMTypeManager::getVTable starts to return the real VTable address instead
of runtime_type_handle.

Jitrino::OPT (Ia32InstCodeSelector) should be modified with respect to these changes.


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