# Wednesday, 01 December 2010
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New Development Snapshot

Several bug fixes. I also figured out a way to workaround an annoying .NET 4 x64 JIT bug without any significant performance impact. Marek Safar has started on porting gmcs to IKVM.Reflection and that triggered some IKVM.Reflection bug fixes and improvements.

  • Fixed regression in Throwable.printStackTrace(). Exception cause in stack trace should use Throwable.toString() not System.Exception.ToString().
  • Add support for serializing .NET exceptions in Java. We don't serialize the actual object, but a placeholder instead, to avoid having to implement full .NET serialization interop.
  • File.lastModified() should return 0 for non-existing files. Fix for #3111432. Thanks to Stephen White for the patch.
  • Added workaround for .NET 4 x64 JIT bug.
  • Optimized thread creation.
  • Optimized ProtectionDomains created for .NET assemblies to be more lazy.
  • Made assembly Java class loader construction lazy.
  • Removed trace messages that don't add much value but do cause the tracer to needlessly read configuration data early in initialization.
  • Fixed AccessController.doPrivileged() bug that caused context to be ignored.
  • Removed implementation specific methods from top of stack trace for threads started from Java.
  • UnauthorizedAccessException caused by already existing file or directory should cause createFileExclusively() to return false instead of throwing an exception.
  • File.canWrite() should always return true for directories (on Windows).
  • Fixed regression. Don't call GetIPv6Properties() if IPv6 isn't available.
  • AWT fixes.
  • IKVM.Reflection: Added IKVM.Reflection.Missing type. Thanks to Marek Safar for pointing this out.
  • IKVM.Reflection: Fixed ParameterInfo.RawDefaultValue to return Missing.Value if the parameter is optional, but doesn't have a default and to return null, if the parameter isn't optional (and doesn't have a default).
  • IKVM.Reflection: Added AssemblyBuilder.__DefineIconResource() API.
  • Added -win32icon:<file> option to ikvmc.
  • IKVM.Reflection: Added ModuleBuilder.__Save() to support -target:module option better.
  • Changed ikvmc to use new ModuleBuilder.__Save() instead of workaround of deleting the manifest module after saving the assembly.
  • Added support for assembly custom attributes in combination with -target:module.
  • IKVM.Reflection: Added AssemblyBuilder.__AddModule() to allow pre-existing modules to be linked in.
  • IKVM.Reflection: Fixed RawModule.GetReferencedAssemblies() to work for non-manifest modules as well.
  • IKVM.Reflection: Added API to query placeholder assembly custom attributes in a module.
  • Fixed Thread.stop() race condition.
  • Implemented java.awt.Font.createFont().
  • Fixed .NET 4 security attribute regressions.

Binaries available here: ikvmbin-0.45.3987.zip

Wednesday, 01 December 2010 09:46:41 (W. Europe Standard Time, UTC+01:00)  #    Comments [0]
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I apologize for the lameness of this, but the comment spam was driving me nuts. In order to be able to post a comment, you need to answer a simple question. Hopefully this question is easy enough not to annoy serious commenters, but hard enough to keep the spammers away.

Anti-Spam Question: What method on java.lang.System returns an object's original hashcode (i.e. the one that would be returned by java.lang.Object.hashCode() if it wasn't overridden)? (case is significant)

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