Toba: Patch Information

From time to time as critical bugs are discovered, the Toba project will release patches to the most recent distribution. While a reasonable effort is made to ensure that the patches work on all platforms, they do not undergo the full testing of a normal release. Generally, they have been tested on Linux systems, and any other system that there's reason to believe may be affected by the patch. Patches are sometimes created relative to the base 1.1 distribution.

Version 1.1c, 13Apr99

The tar file for version 1.1c contains source-level fixes for the following problems:

Everything in patch 1.1b.
gc updated to 4.13 (final), now built from patch to original distribution like the other supplementary systems. Version 1.1c is not provided in patch format, because the previous gc directory must be completely eliminated.
Linux system uses pthreads by default, instead of scout threads, allowing timed waits and joins.
Match JDK (classfile) order of results in the reflection methods that return lists of fields/methods. Support for this changed the size of the vt_generic and mt_generic structures: all object files must be rebuilt with the new release.
Fix problems with access to class variables through reflection without prior class initialization.
Serialization mishandled overrides of the readObject/writeObject method.
Compression/decompression dropped data when decompressing files (including class files) that exceeded an internal buffer size.
Serialization values miscalculated due to extraneous flag bits, and uninitialized exception lists in classes that had not been fully resolved.
Fix problem where classes were internally identified only by name, causing conflicts when the same class was loaded multiple times through different class loaders. Now classes are named by both name and an associated loader.
Fix problem with wakeups in various thread packages (the notification supposed to go to certain threads was sometimes stolen by others).

Version 1.1b, 04Dec98

The patch and tar files for version 1.1b contain source-level fixes for the following problems:

Everything in patch 1.1a.
java.lang.reflect support completely rewritten to match JDK behavior, and implement Method.invoke(). The method invocation is written in semi-portable C, rather than platform-specific code. Methods with no more than two parameters (three for static methods), or with no more than 12 parameters all the same size as a java object pointer, should work on both x86/Linux and SPARC/Solaris. There are some problems with passing/returning primitive types on Irix.
Bugs allocating multidimensional arrays in jit'd code are fixed.
The exception thrown when operating on closed file or socket descriptors should now match JDK (a subclass of IOException rather than a NullPointerException).
Instantiating an uninstantiable class generates the correct exception.

Patch 1.1b also introduced the following bugs:

Synchronized method invocation may hang on an Irix 6.5 system. If anybody cares to figure out why and let us know a patch, we'd appreciate it.

Version 1.1a, 30Oct98

The patch file for version 1.1a contains source-level fixes for the following problems:

Serialization problems were fixed by the following three changes:
The computed serialVersionUID of jit'd classes differed from Sun's calculation.
Looking up array classes with Class.forName was not supported with the JIT enabled.
Field and method resolution when a jit'd subclass overloads a superclass is not completely correct. One particular instance of this caused initialization of sun.security.provider.Sun to segfault, breaking serialization. This error has been fixed, but there are still cases where overloading a static variable (method) method with an instance variable (method) of the same name and signature will result in incorrect execution. A proper fix for this involves a major restructuring of Toba, and is not currently scheduled for attention.
Constant value conflicts between JDK and the host system for socket options like SO_LINGER have been resolved.
A missing undocumented system property that was required to match JDK's behavior when converting Unicode strings to byte arrays has been added.
The path to X11 libraries on Linux when building --with-biss has been updated to what may be a more standard location.
The driver script was updated to prefer the rebuilt BISS classes to the standard ones; if you're building with BISS, you need this patch.
The default behavior of Toba is now to not run finalizers on exit, matching JDK's behavior. The System.RunFinalizersOnExit(boolean) method is now supported to change this.

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