### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: compiler/org/eclipse/jdt/internal/compiler/ClassFile.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ClassFile.java,v
retrieving revision 1.204
diff -u -r1.204 ClassFile.java
--- compiler/org/eclipse/jdt/internal/compiler/ClassFile.java	5 Jan 2011 19:57:26 -0000	1.204
+++ compiler/org/eclipse/jdt/internal/compiler/ClassFile.java	14 Jan 2011 15:32:52 -0000
@@ -3901,20 +3901,35 @@
 		if (aType.isInterface()) {
 			superclassNameIndex = this.constantPool.literalIndexForType(ConstantPool.JavaLangObjectConstantPoolName);
 		} else {
-			superclassNameIndex =
-				(aType.superclass == null ? 0 : this.constantPool.literalIndexForType(aType.superclass));
+			if (aType.superclass != null) {
+				 if ((aType.superclass.tagBits & TagBits.HasMissingType) != 0) {
+						superclassNameIndex = this.constantPool.literalIndexForType(ConstantPool.JavaLangObjectConstantPoolName);
+				 } else {
+						superclassNameIndex = this.constantPool.literalIndexForType(aType.superclass);
+				 }
+			} else {
+				superclassNameIndex = 0;
+			}
 		}
 		this.contents[this.contentsOffset++] = (byte) (superclassNameIndex >> 8);
 		this.contents[this.contentsOffset++] = (byte) superclassNameIndex;
 		ReferenceBinding[] superInterfacesBinding = aType.superInterfaces();
 		int interfacesCount = superInterfacesBinding.length;
-		this.contents[this.contentsOffset++] = (byte) (interfacesCount >> 8);
-		this.contents[this.contentsOffset++] = (byte) interfacesCount;
+		int interfacesCountPosition = this.contentsOffset;
+		this.contentsOffset += 2;
+		int interfaceCounter = 0;
 		for (int i = 0; i < interfacesCount; i++) {
-			int interfaceIndex = this.constantPool.literalIndexForType(superInterfacesBinding[i]);
+			ReferenceBinding binding = superInterfacesBinding[i];
+			if ((binding.tagBits & TagBits.HasMissingType) != 0) {
+				continue;
+			}
+			interfaceCounter++;
+			int interfaceIndex = this.constantPool.literalIndexForType(binding);
 			this.contents[this.contentsOffset++] = (byte) (interfaceIndex >> 8);
 			this.contents[this.contentsOffset++] = (byte) interfaceIndex;
 		}
+		this.contents[interfacesCountPosition++] = (byte) (interfaceCounter >> 8);
+		this.contents[interfacesCountPosition] = (byte) interfaceCounter;
 		this.creatingProblemType = createProblemType;
 
 		// retrieve the enclosing one guaranteed to be the one matching the propagated flow info
#P org.eclipse.jdt.core.tests.compiler
Index: src/org/eclipse/jdt/core/tests/compiler/regression/ProblemTypeAndMethodTest.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/ProblemTypeAndMethodTest.java,v
retrieving revision 1.39
diff -u -r1.39 ProblemTypeAndMethodTest.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/ProblemTypeAndMethodTest.java	17 Dec 2010 09:39:06 -0000	1.39
+++ src/org/eclipse/jdt/core/tests/compiler/regression/ProblemTypeAndMethodTest.java	14 Jan 2011 15:32:53 -0000
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2010 IBM Corporation and others.
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -1579,9 +1579,9 @@
 			false,
 			false);
 
-	// check Y superclass in problem classfile
+	// check Y superclass in problem classfile: shoud not be Z otherwise the class cannot load
 	String expectedOutput =
-		"public class Y extends Z {\n";
+		"public class Y {\n";
 
 	File f = new File(OUTPUT_DIR + File.separator + "Y.class");
 	byte[] classFileBytes = org.eclipse.jdt.internal.compiler.util.Util.getFileByteContent(f);