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From "Ivan Popov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-4234) [jdktools][jpda][eut] JDWP command ClassType.InvokeMethod fails for method Class.forName(Ljava/lang/String;ZLjava/lang/ClassLoader;)
Date Tue, 19 Jun 2007 09:09:26 GMT
[jdktools][jpda][eut] JDWP command ClassType.InvokeMethod fails for method Class.forName(Ljava/lang/String;ZLjava/lang/ClassLoader;)
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                 Key: HARMONY-4234
                 URL: https://issues.apache.org/jira/browse/HARMONY-4234
             Project: Harmony
          Issue Type: Bug
          Components: JDK
         Environment: Windows/x86, harmony-jdk-r547543
            Reporter: Ivan Popov


JDWP agent fails in executing command ClassType.InvokeMethod fails for method Class.forName(Ljava/lang/String;ZLjava/lang/ClassLoader;),
it claims about type mismatch for the last argument. This causes 10 of 520 EUT jdtdebug tests
failures (org.eclipse.jdt.debug.tests.core.LocalVariableTests) mentioned in HARMONY-4186.

To reproduce this problem use attached application ArrayDetailTests.java:

1. Load ArrayDetailTests.java into Eclipse
2. Set breakpoint to the last line of method test() (line 64)
3. Launch application under debugger (Run->Debug)
4. Wait for application is suspended on breakpoint
5. Go to Variables view and choose 'strings' variable

With RI debugger will show value of 'strings' variable as '[0, 1, 10, 11, 100]'.
With Harmony it will print the following text:

    Detail formatter error:
        com.sun.jdi.InvalidTypeException occurred invoking method.

The problem is in JDWP agent function SpecialAsyncCommandHandler::getClassNameArg(), which
extracts argument type name from the method signature. This function handles symbol 'L' in
a special way and this causes problems in extracting name 'java/lang/ClassLoader' for the
last argument of the invoked method.


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