### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: dom/org/eclipse/jdt/core/dom/RecoveredTypeBinding.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/dom/org/eclipse/jdt/core/dom/RecoveredTypeBinding.java,v
retrieving revision 1.7
diff -u -r1.7 RecoveredTypeBinding.java
--- dom/org/eclipse/jdt/core/dom/RecoveredTypeBinding.java	24 Aug 2007 17:17:34 -0000	1.7
+++ dom/org/eclipse/jdt/core/dom/RecoveredTypeBinding.java	7 Nov 2007 14:52:29 -0000
@@ -244,7 +244,11 @@
 	 * @see org.eclipse.jdt.core.dom.ITypeBinding#getSuperclass()
 	 */
 	public ITypeBinding getSuperclass() {
-		return this.resolver.resolveWellKnownType("java.lang.Object"); //$NON-NLS-1$
+		ITypeBinding object = this.resolver.resolveWellKnownType("java.lang.Object"); //$NON-NLS-1$
+		if (this == object) {
+			return null;
+		}
+		return object;
 	}
 
 	/* (non-Javadoc)
#P org.eclipse.jdt.core.tests.model
Index: src/org/eclipse/jdt/core/tests/dom/ASTConverterTest2.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/dom/ASTConverterTest2.java,v
retrieving revision 1.184
diff -u -r1.184 ASTConverterTest2.java
--- src/org/eclipse/jdt/core/tests/dom/ASTConverterTest2.java	24 Sep 2007 11:39:33 -0000	1.184
+++ src/org/eclipse/jdt/core/tests/dom/ASTConverterTest2.java	7 Nov 2007 14:52:37 -0000
@@ -5544,4 +5544,33 @@
 		}
 	}
 	
+	/**
+	 * @bug 186410: [dom] StackOverflowError due to endless superclass bindings hierarchy
+	 * @test Ensures that the superclass of "java.lang.Object" class is null even when it's a recovered binding
+	 * @see "https://bugs.eclipse.org/bugs/show_bug.cgi?id=186410"
+	 */
+	public void test0610() throws CoreException, IOException {
+		try {
+			createJavaProject("P", new String[] {""}, new String[0], "");
+			createFile("P/A.java",
+				"public class A {\n" +
+				"	void method(){}\n" +
+				"}"
+			);
+			createFile("P/B.java",
+				"public class B extends A {\n" +
+				"	void method(){}\n" +
+				"}"
+			);
+			ICompilationUnit cuA = getCompilationUnit("P/A.java");
+			CompilationUnit unitA = (CompilationUnit) runConversion(AST.JLS3, cuA, true, false, true);
+			AbstractTypeDeclaration type = (AbstractTypeDeclaration)unitA.types().get(0);
+			ITypeBinding typeSuperclass = type.resolveBinding().getSuperclass();
+			assertEquals("Unexpected superclass", "Object", typeSuperclass.getName());
+			assertNull("java.lang.Object should  not have any superclass", typeSuperclass.getSuperclass());
+		} finally {
+			deleteProject("P");
+		}
+	}
+	
 }