Simplified class loading exception handling.

runtime/ByteCodeHelper.cs

@@ -301,18 +301,9 @@ namespace IKVM.Runtime
 				wrapper.Finish();
 				return wrapper;
 			}
-			catch(ClassNotFoundException x)
-			{
-				throw new java.lang.NoClassDefFoundError(x.Message);
-			}
 			catch(RetargetableJavaException x)
 			{
-				Exception javaException = x.ToJava();
-				if(!(javaException is java.lang.Error))
-				{
-					throw new java.lang.NoClassDefFoundError(javaException.Message).initCause(javaException);
-				}
-				throw javaException;
+				throw x.ToJava();
 			}
 #endif
 		}
@@ -492,18 +483,9 @@ namespace IKVM.Runtime
 				}
 				Interlocked.CompareExchange(ref cache, java.lang.invoke.MethodType.methodType(loader.RetTypeWrapperFromSig(sig).ClassObject, ptypes), null);
 			}
-			catch (ClassNotFoundException x)
-			{
-				throw new java.lang.NoClassDefFoundError(x.Message);
-			}
 			catch (RetargetableJavaException x)
 			{
-				Exception javaException = x.ToJava();
-				if (!(javaException is java.lang.Error))
-				{
-					throw new java.lang.NoClassDefFoundError(javaException.Message).initCause(javaException);
-				}
-				throw javaException;
+				throw x.ToJava();
 			}
 #endif
 		}
@@ -572,18 +554,9 @@ namespace IKVM.Runtime
 						}
 				}
 			}
-			catch (ClassNotFoundException x)
-			{
-				throw new java.lang.NoClassDefFoundError(x.Message);
-			}
 			catch (RetargetableJavaException x)
 			{
-				Exception javaException = x.ToJava();
-				if (!(javaException is java.lang.Error))
-				{
-					throw new java.lang.NoClassDefFoundError(javaException.Message).initCause(javaException);
-				}
-				throw javaException;
+				throw x.ToJava();
 			}
 			catch (java.lang.ReflectiveOperationException x)
 			{

runtime/JavaException.cs

@@ -65,9 +65,13 @@ sealed class ClassLoadingException : RetargetableJavaException
 	{
 	}
 
-#if !STATIC_COMPILER && !STUB_GENERATOR
+#if !STATIC_COMPILER && !FIRST_PASS && !STUB_GENERATOR
 	internal override Exception ToJava()
 	{
+		if (!(InnerException is java.lang.Error) && !(InnerException is java.lang.RuntimeException))
+		{
+			return new java.lang.NoClassDefFoundError(InnerException.Message).initCause(InnerException);
+		}
 		return InnerException;
 	}
 #endif
@@ -122,7 +126,7 @@ sealed class ClassNotFoundException : RetargetableJavaException
 #if !STATIC_COMPILER && !FIRST_PASS && !STUB_GENERATOR
 	internal override Exception ToJava()
 	{
-		return new java.lang.ClassNotFoundException(Message);
+		return new java.lang.NoClassDefFoundError(Message);
 	}
 #endif
 }

runtime/common.cs

@@ -215,28 +215,40 @@ namespace IKVM.NativeCode.ikvm.runtime
 
 		public static global::java.lang.Class loadClass(global::java.lang.ClassLoader _this, string name, bool resolve)
 		{
-#if !FIRST_PASS
-			if (!global::java.lang.ClassLoader.checkName(name))
-			{
-				throw new global::java.lang.ClassNotFoundException(name);
-			}
-#endif
+#if FIRST_PASS
+			return null;
+#else
 			try
 			{
+				if (!global::java.lang.ClassLoader.checkName(name))
+				{
+					throw new ClassNotFoundException(name);
+				}
 				AssemblyClassLoader_ wrapper = (AssemblyClassLoader_)ClassLoaderWrapper.GetClassLoaderWrapper(_this);
 				TypeWrapper tw = wrapper.LoadClass(name);
-				if(tw == null)
+				if (tw == null)
 				{
 					throw new ClassNotFoundException(name);
 				}
 				Tracer.Info(Tracer.ClassLoading, "Loaded class \"{0}\" from {1}", name, _this);
 				return tw.ClassObject;
 			}
-			catch(RetargetableJavaException x)
+			catch (ClassNotFoundException x)
+			{
+				Tracer.Info(Tracer.ClassLoading, "Failed to load class \"{0}\" from {1}", name, _this);
+				throw new global::java.lang.ClassNotFoundException(x.Message);
+			}
+			catch (ClassLoadingException x)
+			{
+				Tracer.Info(Tracer.ClassLoading, "Failed to load class \"{0}\" from {1}", name, _this);
+				throw x.InnerException;
+			}
+			catch (RetargetableJavaException x)
 			{
 				Tracer.Info(Tracer.ClassLoading, "Failed to load class \"{0}\" from {1}", name, _this);
 				throw x.ToJava();
 			}
+#endif
 		}
 
 		public static global::java.net.URL getResource(global::java.lang.ClassLoader _this, string name)

runtime/openjdk.cs

@@ -2427,6 +2427,14 @@ namespace IKVM.NativeCode.java
 						ClassLoaderWrapper classLoaderWrapper = ClassLoaderWrapper.GetClassLoaderWrapper(loader);
 						tw = classLoaderWrapper.LoadClassByDottedName(name);
 					}
+					catch (ClassNotFoundException x)
+					{
+						throw new global::java.lang.ClassNotFoundException(x.Message);
+					}
+					catch (ClassLoadingException x)
+					{
+						throw x.InnerException;
+					}
 					catch (RetargetableJavaException x)
 					{
 						throw x.ToJava();