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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; 6+ messages in thread
From: martin at egholm-nielsen dot dk @ 2005-08-08 18:54 UTC (permalink / raw)
To: gcc-bugs
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] 6+ 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; 6+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-08-08 18:59 UTC (permalink / raw) To: gcc-bugs ------- 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] 6+ 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; 6+ messages in thread From: tromey at gcc dot gnu dot org @ 2005-09-09 18:35 UTC (permalink / raw) To: gcc-bugs ------- 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] 6+ 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; 6+ messages in thread From: cvs-commit at developer dot classpath dot org @ 2005-09-09 21:51 UTC (permalink / raw) To: gcc-bugs ------- 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] 6+ 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; 6+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2005-09-15 20:17 UTC (permalink / raw) To: gcc-bugs ------- 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] 6+ messages in thread
[parent not found: <bug-23288-10349@http.gcc.gnu.org/bugzilla/>]
* [Bug libgcj/23288] java.lang.Class's #getPackage() returns null [not found] <bug-23288-10349@http.gcc.gnu.org/bugzilla/> @ 2006-03-07 22:41 ` tromey at gcc dot gnu dot org 0 siblings, 0 replies; 6+ messages in thread From: tromey at gcc dot gnu dot org @ 2006-03-07 22:41 UTC (permalink / raw) To: gcc-bugs ------- Comment #5 from tromey at gcc dot gnu dot org 2006-03-07 22:41 ------- I believe this was fixed a while back. The test cases work for me with 4.1. -- tromey at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED Target Milestone|--- |4.1.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23288 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2006-03-07 22:41 UTC | newest]
Thread overview: 6+ 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
[not found] <bug-23288-10349@http.gcc.gnu.org/bugzilla/>
2006-03-07 22:41 ` tromey at gcc dot gnu dot org
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