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From: "bonniot at users dot sf dot net" <gcc-bugzilla@gcc.gnu.org> To: java-prs@gcc.gnu.org Subject: [Bug libgcj/21785] New: [regression] ClassNotFound during deserialization Date: Fri, 27 May 2005 15:02:00 -0000 [thread overview] Message-ID: <20050527150214.21785.bonniot@users.sf.net> (raw) This very simple serialization/deserialization test fails. This is a regression. //////////////////////////////////// import java.io.*; public class Enum implements Serializable { public static void main(String[] args) { try { ByteArrayOutputStream outb = new ByteArrayOutputStream(); ObjectOutputStream outs = new ObjectOutputStream(outb); outs.writeObject(new Enum()); byte[] store = outb.toByteArray(); ByteArrayInputStream inb = new ByteArrayInputStream(store); ObjectInputStream ins = new ObjectInputStream(inb); ins.readObject(); } catch (Throwable e) { throw new Error(e); } } } /////////////////////////////// sauternes /tmp /usr/local/src/gcc-cvs/install/bin/gcj -C Enum.java [04:54 27/05/05] sauternes /tmp /usr/local/src/gcc-cvs/install/bin/gij Enum [04:54 27/05/05] Exception in thread "main" java.lang.Error: java.lang.ClassNotFoundException: Enum at Enum.main (Enum.java:17) Caused by: java.lang.ClassNotFoundException: Enum at java.lang.Class.forName (natClass.cc:91) at java.io.ObjectInputStream.resolveClass (ObjectInputStream.java:782) at java.io.ObjectInputStream.readClassDescriptor (ObjectInputStream.java:534) at java.io.ObjectInputStream.readObject (ObjectInputStream.java:228) at java.io.ObjectInputStream.readObject (ObjectInputStream.java:275) at Enum.main (Enum.java:15) sauternes /tmp kaffe Enum [04:54 27/05/05] sauternes /tmp java Enum sauternes /tmp gij (GNU libgcj) version 4.1.0 20050527 (experimental) Note: this bug looks similar to a bug I reported against jamvm: https://sourceforge.net/tracker/?func=detail&atid=543058&aid=1155738&group_id=75148 I paste here the evaluation Robert sent me privately after he fixed it, as it MIGHT be relevant to gcj too (being a change in classpath). " P.S. It was the recent changes made to Classpath. VMSecurityManager.currentClassLoader() now returns "null" if checkPermissions(AllPermissions) passes. ObjectInputStream uses this to resolve a class, and ends up trying to resolve it using the bootstrap class loader (which fails). By luck SableVM works, because it doesn't have a complete implementation of VMAccessController, so checkPermissions(AllPermissions) fails, and currentClassLoader returns the same as before. I'll report a Classpath/SableVM bug. " -- Summary: [regression] ClassNotFound during deserialization Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: libgcj AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: bonniot at users dot sf dot net 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=21785
next reply other threads:[~2005-05-27 15:02 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2005-05-27 15:02 bonniot at users dot sf dot net [this message] 2005-05-27 15:05 ` [Bug libgcj/21785] " bonniot at users dot sf dot net 2005-05-27 17:14 ` [Bug libgcj/21785] [4.1 regression] " pinskia at gcc dot gnu dot org 2005-06-01 17:15 ` tromey at gcc dot gnu dot org 2005-06-01 19:58 ` cvs-commit at gcc dot gnu dot org 2005-06-01 20:01 ` tromey at gcc dot gnu dot org
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