[Mono-dev] Reflection Emit issues
Miguel de Icaza
miguel at novell.com
Wed Mar 14 19:33:59 EDT 2007
Hello,
> After a lot of trail and error, here is a small sample that duplicate
> this issue, it works flawlessly on CLR, but fails on Mono.
> Note that I put an assert before the call to Emit(OpCode, method), but
> it still thing that it is null.
It is probably not finding the method because the arguments are:
public static MethodBase GetMethodFromHandle(RuntimeMethodHandle handle,
RuntimeTypeHandle declaringType)
Try adjusting that.
> Unhandled Exception: System.ArgumentNullException: Argument cannot be
> null.
> Parameter name: method
> at System.Reflection.Emit.ILGenerator.Emit (OpCode opcode,
> System.Reflection.MethodInfo method) [0
> x00099] in C:\cygwin\tmp\scratch\mono- 1.2.3.1\mcs\class\corlib
> \System.Reflection.Emit\ILGenerator.cs
> :720
> at Mono.Emit.Program.Main (System.String[] args) [0x00000]
>
> class Program
> {
> static void Main(string[] args)
> {
> AssemblyName assemblyName = new AssemblyName("Blag");
> AssemblyBuilder assemblyBuilder =
> AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName,
> AssemblyBuilderAccess.RunAndSave);
> ModuleBuilder moduleBuilder =
> assemblyBuilder.DefineDynamicModule("Module"," test.dll");
> TypeBuilder typeBuilder =
> moduleBuilder.DefineType("Child",TypeAttributes.Class,
> typeof(Parent));
> MethodBuilder methodBuilder =
> typeBuilder.DefineMethod("Method", MethodAttributes.Virtual|
> MethodAttributes.Public);
> ILGenerator ilGenerator = methodBuilder. GetILGenerator();
> LocalBuilder localBuilder = ilGenerator.DeclareLocal(typeof
> (MethodInfo));
> ilGenerator.Emit (OpCodes.Ldtoken,
> typeof(Parent).GetMethod("Method"));
> ilGenerator.Emit(OpCodes.Ldtoken, typeof(Parent));
> MethodInfo methodInfo = typeof(MethodBase).GetMethod(
> "GetMethodFromHandle", BindingFlags.Static |
> BindingFlags.Public, null,
> new Type[] { typeof(RuntimeMethodHandle),
> typeof(RuntimeTypeHandle) }, null);
> Debug.Assert(methodInfo != null, "GetMethodFromHandle must
> exists");
> ilGenerator.Emit(OpCodes.Call, methodInfo);
> ilGenerator.Emit(OpCodes.Castclass, typeof(MethodInfo));
> ilGenerator.Emit(OpCodes.Stloc,localBuilder);
> ilGenerator.EmitWriteLine(localBuilder);
> ilGenerator.Emit(OpCodes.Ret);
> Type type = typeBuilder.CreateType();
> Parent parent = (Parent) Activator.CreateInstance(type);
> assemblyBuilder.Save("test.dll");
> parent.Method();
> }
> }
>
> public class Parent
> {
> public virtual void Method()
> {
>
> }
>
> public virtual void Print(object obj)
> {
> Console.WriteLine(obj);
>
> }
> }
>
>
>
> On 3/12/07, Gert Driesen <gert.driesen at telenet.be> wrote:
> Hi Ayende,
>
>
>
> I tried the tests myself (with SVN head), and did not even
> succeed in running the complete test suite:
>
>
>
> "no implementation for interface method
> Rhino.Mocks.Interfaces.IMockedObject::g
>
> _ProxyHash() in
> class .genericClass`1Proxy79e618bfe6044bb9bb680503b32a2e36
>
>
>
> This application has requested the Runtime to terminate it in
> an unusual way.
>
> Please contact the application's support team for more
> information."
>
>
>
> It would be great if you could create smaller test cases, and
> submit a bug reports for these issues.
>
>
>
> A good place to start would be running the unit tests of
> Castle on Mono, and once these pass move on to the Rhino
> tests.
>
>
>
> Gert
>
>
>
> From:mono-devel-list-bounces at lists.ximian.com
> [mailto:mono-devel-list-bounces at lists.ximian.com] On Behalf Of
> Ayende Rahien
> Sent: maandag 12 maart 2007 7:13
> To: mono-devel-list at lists.ximian.com
> Subject: [Mono-dev] Reflection Emit issues
>
>
>
>
> Hi guys,
> I have just attempted to run the Rhino Mocks test suite on
> Mono (Win32).
> The result is about 300 failing tests. The root cause seems to
> be differences in Reflection.Emit behavior.
> Rhino Mocks is using Castle Dynamic Proxy 2 to generate
> proxies, and all those tests are running on the Microsoft .NET
> implementation successfully.
>
> How to reproduce:
> 1/ Get the source from
> https://rhino-tools.svn.sourceforge.net/svnroot/rhino-tools
> 2/ Build rhino-mocks (xbuild default.build )
> 3/ rhino-tools\rhino-mocks\Rhino.Mocks.Tests\bin\debug>"c:
> \Program Files\Mono-1.2.3.1\bin\mono" MbUnit.GUI.exe
>
> The result of one of the failing tests:
>
> 1)
> Rhino.Mocks.Tests.FieldsProblem.PresenterBaseTestFixture.SetUp.TestEventInitialization.TearDown :
> Argument cannot be null.
> Parameter name: method
> at System.Reflection.Emit.ILGenerator.Emit (OpCode opcode,
> System.Reflection.MethodInfo method) [0x00000]
> at
> Castle.DynamicProxy.Generators.Emitters.SimpleAST.MethodTokenExpression.Emit (IMemberEmitter member, System.Reflection.Emit.ILGenerator gen) [0x00000]
> at
> Castle.DynamicProxy.Generators.Emitters.SimpleAST.AssignStatement.Emit (IMemberEmitter member, System.Reflection.Emit.ILGenerator gen) [0x00000]
> at
> Castle.DynamicProxy.Generators.Emitters.CodeBuilders.AbstractCodeBuilder.Generate (IMemberEmitter member, System.Reflection.Emit.ILGenerator il) [0x00000]
> at
> Castle.DynamicProxy.Generators.Emitters.ConstructorEmitter.Generate () [0x00000]
> at
> Castle.DynamicProxy.Generators.Emitters.AbstractTypeEmitter.EnsureBuildersAreInAValidState () [0x00000]
> at
> Castle.DynamicProxy.Generators.Emitters.AbstractTypeEmitter.BuildType () [0x00000]
> at
> Castle.DynamicProxy.Generators.InterfaceProxyWithTargetGenerator.GenerateCode (System.Type proxyTargetType, System.Type[] interfaces, Castle.DynamicProxy.ProxyGenerationOptions options) [0x00000]
> at
> Castle.DynamicProxy.DefaultProxyBuilder.CreateInterfaceProxyTypeWithoutTarget (System.Type theInterface, System.Type[] interfaces, Castle.DynamicProxy.ProxyGenerationOptions options) [0x00000]
> at
> Castle.DynamicProxy.ProxyGenerator.CreateInterfaceProxyTypeWithoutTarget (System.Type theInterface, System.Type[] interfaces, Castle.DynamicProxy.ProxyGenerationOptions options) [0x00000]
> at
> Castle.DynamicProxy.ProxyGenerator.CreateInterfaceProxyWithoutTarget (System.Type theInterface, System.Type[] interfaces, Castle.DynamicProxy.ProxyGenerationOptions options, Castle.Core.Interceptor.IInterceptor[] interceptors) [0x00000]
> at
> Castle.DynamicProxy.ProxyGenerator.CreateInterfaceProxyWithoutTarget (System.Type theInterface, System.Type[] interfaces, Castle.Core.Interceptor.IInterceptor [] interceptors) [0x00000]
> at Rhino.Mocks.MockRepository.MockInterface
> (Rhino.Mocks.CreateMockState mockStateFactory, System.Type
> type, System.Type[] extras) [0x00000]
> at Rhino.Mocks.MockRepository.CreateMockObject (System.Type
> type, Rhino.Mocks.CreateMockState factory, System.Type[]
> extras, System.Object[] argumentsForConstructor) [0x00000]
> at Rhino.Mocks.MockRepository.DynamicMultiMock (System.Type
> mainType, System.Type[] extraTypes, System.Object[]
> argumentsForConstructor) [0x00000]
> at Rhino.Mocks.MockRepository.DynamicMock (System.Type type,
> System.Object[] argumentsForConstructor) [0x00000]
> at
> Rhino.Mocks.Tests.FieldsProblem.PresenterBaseTestFixture.SetUp
> () [0x00000]
> at <0x00000> <unknown method>
> at (wrapper managed-to-native)
> System.Reflection.MonoMethod:InternalInvoke (object,object[])
> at System.Reflection.MonoMethod.Invoke ( System.Object obj,
> BindingFlags invokeAttr, System.Reflection.Binder binder,
> System.Object[] parameters, System.Globalization.CultureInfo
> culture) [0x00000]
>
>
>
> _______________________________________________
> Mono-devel-list mailing list
> Mono-devel-list at lists.ximian.com
> http://lists.ximian.com/mailman/listinfo/mono-devel-list
More information about the Mono-devel-list
mailing list