diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
index a9404b9f3c7..d4c650977cd 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
@@ -58,6 +58,7 @@ import org.eclipse.cdt.core.dom.ast.cpp.ICPPFunction;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPFunctionTemplate;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPMethod;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPParameter;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPReferenceType;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPSpecialization;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateDefinition;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateInstance;
@@ -3039,4 +3040,57 @@ public class AST2TemplateTests extends AST2BaseTest {
 		BindingAssertionHelper ba= new BindingAssertionHelper(getAboveComment(), true);
 		ba.assertNonProblem("foo();", 3);
 	}
+	
+	//	namespace result_of {
+	//		template <typename Sequence, typename T, bool is_associative_sequence = false>
+	//		struct find;
+	//
+	//		template <typename Sequence, typename T>
+	//		struct find<Sequence, T, false> {
+	//			typedef
+	//			detail::static_seq_find_if<
+	//			typename result_of::begin<Sequence>::type
+	//			, typename result_of::end<Sequence>::type
+	//			, is_same<mpl::_, T>
+	//			>
+	//			filter;
+	//		};
+	//
+	//		template <typename Sequence, typename T>
+	//		struct find<Sequence, T, true> {
+	//			typedef detail::assoc_find<Sequence, T> filter;
+	//		}; 
+	//	}
+	public void testBug238180_ArrayOutOfBounds() throws Exception {
+		// the code above used to trigger an ArrayOutOfBoundsException
+		parse(getAboveComment(), ParserLanguage.CPP);
+	}
+	
+	//	namespace detail {
+	//		template<bool AtoB, bool BtoA, bool SameType, class A, class B>
+	//		struct str;
+	//		template<class A, class B>
+	//		struct str<true, true, false, A, B> {
+	//			typedef
+	//			detail::return_type_deduction_failure<str> type;
+	//			// ambiguous type in conditional expression
+	//		};
+	//		template<class A, class B>
+	//		struct str<true, true, true, A, B> {
+	//			typedef A type;
+	//		};
+	//	} // detail
+	public void testBug238180_ClassCast() throws Exception {
+		// the code above used to trigger a ClassCastException
+		BindingAssertionHelper ba= new BindingAssertionHelper(getAboveComment(), true);
+		String tmplId= "str<true, true, false, A, B>";
+		ICPPClassType p= ba.assertNonProblem(tmplId, tmplId.length(), ICPPClassType.class);
+		ICPPConstructor con= p.getConstructors()[1];
+		ICPPReferenceType reftype= (ICPPReferenceType) con.getType().getParameterTypes()[0];
+		IQualifierType qt= (IQualifierType) reftype.getType();
+		ICPPDeferredClassInstance dcl= (ICPPDeferredClassInstance) qt.getType();
+		ICPPClassTemplatePartialSpecialization spec= (ICPPClassTemplatePartialSpecialization) dcl.getSpecializedBinding();
+		ICPPTemplateTypeParameter tp= (ICPPTemplateTypeParameter) spec.getTemplateParameters()[0];
+		assertNull(tp.getDefault());
+	}
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassTemplatePartialSpecialization.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassTemplatePartialSpecialization.java
index e34b00991c8..feea318e68b 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassTemplatePartialSpecialization.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassTemplatePartialSpecialization.java
@@ -67,6 +67,9 @@ public class CPPClassTemplatePartialSpecialization extends CPPClassTemplate impl
 		}
 		
 		ObjectMap argMap= CPPTemplates.deduceTemplateArguments(getArguments(), args, true);
+		if (argMap == null)
+			return null;
+		
 		if (CPPTemplates.containsDependentArg(argMap)) {
 			return deferredInstance(argMap, args);
 		}
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPScope.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPScope.java
index 4029991dd8b..e7a9dda0bab 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPScope.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPScope.java
@@ -136,7 +136,7 @@ abstract public class CPPScope implements ICPPScope, IASTInternalScope {
 		IBinding binding= getBindingInAST(name, forceResolve);
 		if (binding == null && forceResolve) {
 			final IASTTranslationUnit tu = name.getTranslationUnit();
-			IIndex index = tu.getIndex();
+			IIndex index = tu == null ? null : tu.getIndex();
 			if (index != null) {
 				// Try looking this up in the PDOM
 				if (physicalNode instanceof IASTTranslationUnit) {
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPTemplateDefinition.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPTemplateDefinition.java
index 18f8b0f6eec..d56d10d43b0 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPTemplateDefinition.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPTemplateDefinition.java
@@ -356,7 +356,8 @@ public abstract class CPPTemplateDefinition extends PlatformObject implements IC
     	ICPPASTTemplateParameter[] ops = origTemplate.getTemplateParameters();
     	ICPPASTTemplateParameter[] nps = newTemplate.getTemplateParameters();
     	ICPPInternalBinding temp = null;
-    	for (int i = 0; i < nps.length; i++) {
+    	int end= Math.min(ops.length, nps.length);
+    	for (int i = 0; i < end; i++) {
     		temp = (ICPPInternalBinding) CPPTemplates.getTemplateParameterName(ops[i]).getBinding();
     		if (temp != null) {
     		    IASTName n = CPPTemplates.getTemplateParameterName(nps[i]);
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
index 16e1e7868b4..2ee72a16306 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
@@ -95,6 +95,7 @@ import org.eclipse.cdt.core.dom.ast.cpp.ICPPBase;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPBlockScope;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassScope;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassTemplate;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassTemplatePartialSpecialization;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassType;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPConstructor;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPDeferredTemplateInstance;
@@ -1508,23 +1509,25 @@ public class CPPSemantics {
 	    if (bindings == null || bindings.length == 0) {
 	        return null;
 	    } else if (bindings.length == 1) {
-//	        if (bindings[0] instanceof IBinding)
-//	    	    return (IBinding) bindings[0];
-//	    	else if (bindings[0] instanceof IASTName && ((IASTName) bindings[0]).getBinding() != null)
-//	    	    return ((IASTName) bindings[0]).getBinding();
-	        
 	    	IBinding candidate= null;
 	        if (bindings[0] instanceof IBinding) {
 	        	candidate= (IBinding) bindings[0];
 	        } else if (bindings[0] instanceof IASTName) {
 	    		candidate= ((IASTName) bindings[0]).getBinding();
+	    	} else {
+	    		return null;
 	    	}
 	        if (candidate != null) {
-	        	 if (candidate instanceof IType == false && candidate instanceof ICPPNamespace == false 
-	        			 && LookupData.typesOnly(name)) {
+	        	if (candidate instanceof IType == false && candidate instanceof ICPPNamespace == false 
+	        			&& LookupData.typesOnly(name)) {
 	        		return null;
-	        	 }
-	        	 return candidate;
+	        	}
+
+	        	// bug 238180
+	        	if (candidate instanceof ICPPClassTemplatePartialSpecialization) 
+	        		return null;
+	        	
+	        	return candidate;
 	        }
 	    }
 	    
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/AbstractIndexerTask.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/AbstractIndexerTask.java
index 009456437a2..7af23d4cde9 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/AbstractIndexerTask.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/AbstractIndexerTask.java
@@ -606,6 +606,11 @@ public abstract class AbstractIndexerTask extends PDOMWriter {
 			th= e; 
 		} catch (StackOverflowError e) {
 			th= e;
+		} catch (Error e) {
+			try {
+				swallowError(path, e);
+			} catch (Throwable ignore) {}
+			throw e;
 		}
 		if (th != null) {
 			swallowError(path, th);
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPClassTemplatePartialSpecialization.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPClassTemplatePartialSpecialization.java
index 3b006228097..71a3846eb50 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPClassTemplatePartialSpecialization.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPClassTemplatePartialSpecialization.java
@@ -177,6 +177,8 @@ class PDOMCPPClassTemplatePartialSpecialization extends
 		}
 		
 		ObjectMap argMap= CPPTemplates.deduceTemplateArguments(getArguments(), args, true);
+		if (argMap == null)
+			return null;
 		if (CPPTemplates.containsDependentArg(argMap)) {
 			return deferredInstance(argMap, args);
 		}