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* [Bug libgcj/23288] New: java.lang.Class's #getPackage() returns null
@ 2005-08-08 18:54 martin at egholm-nielsen dot dk
2005-08-08 18:59 ` [Bug libgcj/23288] " pinskia at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: martin at egholm-nielsen dot dk @ 2005-08-08 18:54 UTC (permalink / raw)
To: java-prs
The following code illustrates that java.lang.Class's method getMethod() returns
null. (The source for Class.java in 3.4.3 actually proves that it is
gnu.gcj.runtime.VMClassLoader that does it...)
--- 8< 8< 8< ---
package men.gcjpackage;
public class TestPackage
{
public static void main(String[] args)
{
System.out.println("ClassLoader: " + TestPackage.class.getClassLoader() );
System.out.println("Package: " + TestPackage.class.getPackage());
} // main
} // TestPackage
--- 8< 8< 8< ---
It produces the following output:
# ./testpackage
ClassLoader: gnu.gcj.runtime.VMClassLoader@10074fc0
Package: null
This is tested with libgcj 3.4.3, however Tom Tromey has proven this still exist
in latest HEAD (as of 2005-08-08):
http://gcc.gnu.org/ml/java/2005-08/msg00027.html
// Martin Egholm
--
Summary: java.lang.Class's #getPackage() returns null
Product: gcc
Version: 3.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libgcj
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: martin at egholm-nielsen dot dk
CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23288
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/23288] java.lang.Class's #getPackage() returns null
2005-08-08 18:54 [Bug libgcj/23288] New: java.lang.Class's #getPackage() returns null martin at egholm-nielsen dot dk
@ 2005-08-08 18:59 ` pinskia at gcc dot gnu dot org
2005-09-09 18:35 ` tromey at gcc dot gnu dot org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-08-08 18:59 UTC (permalink / raw)
To: java-prs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-08 18:59 -------
Confirmed:
It works when interpreting the byte-code:
earth:~>gij men.gcjpackage.TestPackage
ClassLoader: gnu.gcj.runtime.SystemClassLoader{urls=[file:./],
parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
Package: package men.gcjpackage
But not when natively:
earth:~>!./a
./a.out
ClassLoader: gnu.gcj.runtime.SystemClassLoader{urls=[file:./],
parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
Package: null
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2005-08-08 18:59:21
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23288
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/23288] java.lang.Class's #getPackage() returns null
2005-08-08 18:54 [Bug libgcj/23288] New: java.lang.Class's #getPackage() returns null martin at egholm-nielsen dot dk
2005-08-08 18:59 ` [Bug libgcj/23288] " pinskia at gcc dot gnu dot org
@ 2005-09-09 18:35 ` tromey at gcc dot gnu dot org
2005-09-09 21:51 ` cvs-commit at developer dot classpath dot org
2005-09-15 20:17 ` cvs-commit at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: tromey at gcc dot gnu dot org @ 2005-09-09 18:35 UTC (permalink / raw)
To: java-prs
------- Additional Comments From tromey at gcc dot gnu dot org 2005-09-09 18:35 -------
Note also that Package.getVersion fails when the class file comes from a
jar. With the included example you can see this by making a manifest file
(in my example named "J/Man"):
Main-Class: men.gcjpackage.TestPackage
Name: men/gcjpackage/
Specification-Title: JChemPaint
Specification-Version: 2.0
Specification-Vendor: The JChemPaint Project
Implementation-Title: jchempaint
Implementation-Version: 2.0.12
Implementation-Vendor: The JChemPaint Project
Then make a jar:
jar -cv -m J/Man -f J/men.jar men/gcjpackage/*.class
And change the test to:
package men.gcjpackage;
public class TestPackage
{
public static void main(String[] args)
{
System.out.println("ClassLoader: " + TestPackage.class.getClassLoader() );
Package x = TestPackage.class.getPackage();
System.out.println("Package: " + x);
System.out.println("Version: " + x.getImplementationVersion());
} // main
} // TestPackage
With the JDK the last line prints:
Version: 2.0.12
With gij it prints:
Version: null
As the names suggest, this prevents JChemPaint from working:
http://almost.cubic.uni-koeln.de/cdk/jcp
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23288
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/23288] java.lang.Class's #getPackage() returns null
2005-08-08 18:54 [Bug libgcj/23288] New: java.lang.Class's #getPackage() returns null martin at egholm-nielsen dot dk
2005-08-08 18:59 ` [Bug libgcj/23288] " pinskia at gcc dot gnu dot org
2005-09-09 18:35 ` tromey at gcc dot gnu dot org
@ 2005-09-09 21:51 ` cvs-commit at developer dot classpath dot org
2005-09-15 20:17 ` cvs-commit at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at developer dot classpath dot org @ 2005-09-09 21:51 UTC (permalink / raw)
To: java-prs
------- Additional Comments From cvs-commit at developer dot classpath dot org 2005-09-09 21:51 -------
Subject: Bug 23288
CVSROOT: /cvsroot/classpath
Module name: classpath
Branch:
Changes by: Tom Tromey <tromey@savannah.gnu.org> 05/09/09 21:42:58
Modified files:
. : ChangeLog
java/net : URLClassLoader.java
Log message:
For PR libgcj/23288:
* java/net/URLClassLoader.java (definePackage): Correctly order
arguments to definePackage. Look up per-entry Attributes.
(getAttributeValue): New method.
CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/classpath/classpath/ChangeLog.diff?tr1=1.4712&tr2=1.4713&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/classpath/classpath/java/net/URLClassLoader.java.diff?tr1=1.35&tr2=1.36&r1=text&r2=text
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23288
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libgcj/23288] java.lang.Class's #getPackage() returns null
2005-08-08 18:54 [Bug libgcj/23288] New: java.lang.Class's #getPackage() returns null martin at egholm-nielsen dot dk
` (2 preceding siblings ...)
2005-09-09 21:51 ` cvs-commit at developer dot classpath dot org
@ 2005-09-15 20:17 ` cvs-commit at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-09-15 20:17 UTC (permalink / raw)
To: java-prs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-09-15 20:17 -------
Subject: Bug 23288
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: tromey@gcc.gnu.org 2005-09-15 20:17:09
Modified files:
libjava : ChangeLog
libjava/java/net: URLClassLoader.java
Log message:
For PR libgcj/23288:
* java/net/URLClassLoader.java (definePackage): Correctly order
arguments to definePackage. Look up per-entry Attributes.
(getAttributeValue): New method.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/ChangeLog.diff?cvsroot=gcc&r1=1.3738&r2=1.3739
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libjava/java/net/URLClassLoader.java.diff?cvsroot=gcc&r1=1.32&r2=1.33
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23288
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-09-15 20:17 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-08-08 18:54 [Bug libgcj/23288] New: java.lang.Class's #getPackage() returns null martin at egholm-nielsen dot dk
2005-08-08 18:59 ` [Bug libgcj/23288] " pinskia at gcc dot gnu dot org
2005-09-09 18:35 ` tromey at gcc dot gnu dot org
2005-09-09 21:51 ` cvs-commit at developer dot classpath dot org
2005-09-15 20:17 ` cvs-commit at gcc dot gnu dot org
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