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Date: Fri, 8 Dec 2006 08:09:27 -0800 (PST)
From: "Vladimir Beliaev (JIRA)" <jira@apache.org>
To: commits@harmony.apache.org
Subject: [jira] Created: (HARMONY-2558) [drlvm][jit] 'new' bytecode does not
 cause class initialization
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[drlvm][jit] 'new' bytecode does not cause class initialization
---------------------------------------------------------------

                 Key: HARMONY-2558
                 URL: http://issues.apache.org/jira/browse/HARMONY-2558
             Project: Harmony
          Issue Type: Bug
          Components: DRLVM
            Reporter: Vladimir Beliaev


According to JVMS for 'new' bytecode:
http://java.sun.com/docs/books/vmspec/2nd-edition/html/Instructions2.doc10.=
html#new
 ... named class, array, or interface type is resolved (=C2=A75.4.3.1) ...
 ... On successful resolution of the class, it is initialized (=C2=A75.5) i=
f it has not already been initialized....

See also 5.5 Initialization (http://java.sun.com/docs/books/vmspec/2nd-edit=
ion/html/ConstantPool.doc.html#77976).
  ... A class or interface may be initialized only as a result of:
      o  The execution of any one of the Java virtual machine instructions =
new, getstatic,...

So, executing 'new' bytecode must cause a class initialization (in particla=
r <clinit> call). The attached test shows it is not true for recent version=
 of DRLVM. In this test the <clinit> produce exception which is supposed to=
 be catched in 'main' method.

The issue is not reproducible with interpreter (-Xint) - marking this bug a=
s JIT one.

To prepare the test please build attached Jasm_part.jj first; then build Te=
st.java.

Test output is:

$ deploy/jre/bin/java -showversion Test
Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foun=
dation or its licensors, as applicable.
java version "1.5.0"=20
pre-alpha : not complete or compatible
svn =3D r482108, (Dec  8 2006), Windows/ia32/msvc 1310, debug build
http://incubator.apache.org/harmony
FAILED: no exception...

$ deploy/jre/bin/java -showversion -Xint Test
Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foun=
dation or its licensors, as applicable.
java version "1.5.0"=20
pre-alpha : not complete or compatible
svn =3D r482108, (Dec  8 2006), Windows/ia32/msvc 1310, debug build
http://incubator.apache.org/harmony
PASSED...

$ java -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))
PASSED...

Thanks
Vladimir

--=20
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