fix possible problem with dynamic assemblies in ClassBrowser

src/AddIns/Debugger/Debugger.Core/Module.cs

@@ -71,7 +71,10 @@ namespace Debugger
 				if (symReader != null)
 					return symReader.GetUserEntryPoint();
 				var info = TypeSystemExtensions.GetInfo(Assembly);
-				var ep = info.CecilModule.EntryPoint;
+				var cecilModule = info.CecilModule;
+				if (cecilModule == null)
+					return 0;
+				var ep = cecilModule.EntryPoint;
 				if (ep != null)
 					return ep.MetadataToken.ToUInt32();
 				return 0;

src/AddIns/Debugger/Debugger.Core/TypeSystemExtensions.cs

@@ -138,8 +138,11 @@ namespace Debugger
 		internal static Task<IUnresolvedAssembly> LoadModuleAsync(Module module, ICorDebugModule corModule)
 		{
 			string name = corModule.GetName();
-			if (corModule.IsDynamic() == 1 || corModule.IsInMemory() == 1)
+			if (corModule.IsDynamic() == 1 || corModule.IsInMemory() == 1) {
-				return Task.FromResult<IUnresolvedAssembly>(new DefaultUnresolvedAssembly(name));
+				var defaultUnresolvedAssembly = new DefaultUnresolvedAssembly(name);
+				weakTable.Add(defaultUnresolvedAssembly, new ModuleMetadataInfo(module, null));
+				return Task.FromResult<IUnresolvedAssembly>(defaultUnresolvedAssembly);
+			}
 			
 			//return Task.FromResult(LoadModule(module, name));
 			return Task.Run(() => LoadModule(module, name));
@@ -181,6 +184,8 @@ namespace Debugger
 			ModuleMetadataInfo info;
 			if (!weakTable.TryGetValue(module.UnresolvedAssembly, out info))
 				throw new ArgumentException("The assembly was not from the debugger type system");
+			if (info.CecilModule == null)
+				return EmptyList<string>.Instance;
 			return info.CecilModule.AssemblyReferences.Select(r => r.FullName);
 		}