Mysaifu JVM - Known bugs

Known bugs in current version

Here is a list of known bugs in the current version of Mysaifu JVM.
 Please inform the Bug reporting form when you find a new bug with this software.

Java Virtual Machine

General

• Keyword strictfp is ignored.
• Keyword volatile is ignored.

JNI

• Not all JNI functions are implemented. Please refer to the JNI status.

Security

• Verifier does not check jsr, ret instructions.

Core class libraries

General

• There are many classes in GNU Classpath, but only few classes are tested under the JVM.

package java.awt

• Transparency is not supported.
• Graphics.drawString() ignores setXORMode() settings.
• Frame, Dialog classes always displayed full-screen mode.. Java applications cannot change it's bounds.
• List.setMultipleMode(boolean b) does not work.
• Toolkit.createImage(ImageProducer) assumes that ImageProducer genarates pixel data as int[] format. byte[] format not supported.
• Following method of class Font ignores FontRenderContext frc.
  

  public Rectangle2D getStringBounds(char[] chars,
                                     int beginIndex,
                                     int limit,
                                     FontRenderContext frc)

• There are a lot of classes that do not work yet.

package java.lang

• Following methods of Class do not work
  • getEnclosingMethod()
  • getEnclosingConstructor()
  • getDeclaringClass()
  • getEnclosingClass()
  • isLocalClass()
  • isMemberClass()
• Class.getResource() cannot load a resource in jar file which in bootclasspath.
• OutOfMemoryError does not have StackTraceElements.
• StackOverflowError does not have StackTraceElements.

Package java.lang.management

• All classes in this package do not work.(Always throws UnsatisfiedLinkError)

Package java.lang.ref

• The operation of SoftReference and WeakReference are the same.
• PhantomReference is enqueued to ReferenceQueue before referent's finalize() called.

Package java.nio.channels

• FileChannel.lock(), tryLock() only works on Windows Mobile 5 or later.
• FileChannel.map() only works on Windows Mobile 5 or later.

Package java.net

• Class Socket does not support timeout.
• Socket.setReceiveBufferSize() always throws SocketException.(Limitation of Windows CE platform)

Package java.util

• Time zone format is "GMT+offset".