Bug 359364: Prevent premature access to ambiguous nodes.

core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java

@@ -9526,4 +9526,16 @@ public class AST2CPPTests extends AST2BaseTest {
 		ICPPClassType c= bh.assertNonProblem("A", 1);
 		assertEquals(0, ClassTypeHelper.getPureVirtualMethods(c).length);
 	}
+	
+	//	template <typename T> struct CT1 {};
+	//	template <typename T> struct CT2 {};
+	//	typedef char Tdef;
+	//	template<> struct CT1< CT2<int> > {
+	//		CT1<Tdef> x;			   // Ambiguity causes lookup in CT1< CT2<int> >
+	//	};
+	//	template<> struct CT2<Tdef> {  // Accessed before ambiguity is resolved
+	//	};
+	public void testAmbiguityResolution_Bug359364() throws Exception {
+		parseAndCheckBindings();
+	}
 }

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTAmbiguityResolver.java

@@ -13,6 +13,7 @@ package org.eclipse.cdt.internal.core.dom.parser.cpp;
 import java.util.HashSet;
 import java.util.LinkedList;
 
+import org.eclipse.cdt.core.dom.ast.ASTNodeProperty;
 import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.IASTCompositeTypeSpecifier;
 import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
@@ -29,7 +30,10 @@ import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration;
 import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
 import org.eclipse.cdt.core.dom.ast.IScope;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTElaboratedTypeSpecifier;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateDeclaration;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateId;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateSpecialization;
 import org.eclipse.cdt.internal.core.dom.parser.ASTAmbiguousNode;
 import org.eclipse.cdt.internal.core.dom.parser.ASTQueries;
 import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics;
@@ -101,6 +105,14 @@ final class CPPASTAmbiguityResolver extends ASTVisitor {
 	public int leave(IASTDeclSpecifier declSpec) {
 		if (declSpec instanceof ICPPASTCompositeTypeSpecifier) {
 			fDeferFunctions--;
+			
+			// Resolve class type definitions, such that the scope is available
+			// during ambiguity resolution.
+			((ICPPASTCompositeTypeSpecifier) declSpec).getName().resolveBinding();
+			
+			// Trigger computation of implicit members.
+			if (declSpec instanceof CPPASTCompositeTypeSpecifier)
+				((CPPASTCompositeTypeSpecifier) declSpec).setAmbiguitiesResolved();
 		}
 		return PROCESS_CONTINUE;
 	}
@@ -128,17 +140,30 @@ final class CPPASTAmbiguityResolver extends ASTVisitor {
 		if (fRepopulate.remove(declaration)) {
 			repopulateScope(declaration);
 		}
-		// Explicit and partial class template specializations need to be resolved right away, 
+		// We need to create class bindings for all definitions and for the specializations.
-		// otherwise we fail to correctly resolve qualified names that depend on a partial specialization. 
+		// Otherwise, name resolution cannot access members or correct specialization.
 		if (declaration instanceof IASTSimpleDeclaration) {
 			IASTSimpleDeclaration sdecl= (IASTSimpleDeclaration) declaration;
+			IASTName name= null;
 			IASTDeclSpecifier declspec = sdecl.getDeclSpecifier();
-			if (declspec instanceof IASTCompositeTypeSpecifier && sdecl.getDeclarators().length == 0) {
+			if (declspec instanceof IASTCompositeTypeSpecifier) {
-				IASTName name= ((IASTCompositeTypeSpecifier) declspec).getName().getLastName();
+				// Definition of a class[template[specialization]]
-				if (name instanceof ICPPASTTemplateId) {
+				name= ((IASTCompositeTypeSpecifier) declspec).getName().getLastName();
-					name.resolveBinding();
+			} else if (declspec instanceof ICPPASTElaboratedTypeSpecifier
+					&& sdecl.getDeclarators().length == 0) {
+				ASTNodeProperty prop = declaration.getPropertyInParent();
+				if (prop == ICPPASTTemplateDeclaration.OWNED_DECLARATION 
+						|| prop == ICPPASTTemplateSpecialization.OWNED_DECLARATION) {
+					ICPPASTElaboratedTypeSpecifier elab= (ICPPASTElaboratedTypeSpecifier) declspec;
+					if (!elab.isFriend()) {
+						// Declaration of a class template specialization.
+						name= elab.getName().getLastName();
+					}
 				}
 			}
+			if (name instanceof ICPPASTTemplateId) {
+				name.resolveBinding();
+			}
 		}
 		return PROCESS_CONTINUE;
 	}

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTCompositeTypeSpecifier.java

@@ -30,12 +30,13 @@ public class CPPASTCompositeTypeSpecifier extends CPPASTBaseDeclSpecifier
 
     private int fKey;
     private IASTName fName;
-    private ICPPClassScope fScope;
+    private CPPClassScope fScope;
 	private IASTDeclaration[] fAllDeclarations;
 	private IASTDeclaration[] fActiveDeclarations;
     private int fDeclarationsPos=-1;
 	private ICPPASTCompositeTypeSpecifier.ICPPASTBaseSpecifier[] baseSpecs = null;
 	private int baseSpecsPos = -1;
+	private boolean fAmbiguitiesResolved= false;
 
 
     public CPPASTCompositeTypeSpecifier() {
@@ -46,6 +47,13 @@ public class CPPASTCompositeTypeSpecifier extends CPPASTBaseDeclSpecifier
 		setName(n);
 	}
 
+	public void setAmbiguitiesResolved() {
+		if (!fAmbiguitiesResolved && fScope != null) {
+			fScope.createImplicitMembers();
+		}
+		fAmbiguitiesResolved= true;
+	}
+	
 	public CPPASTCompositeTypeSpecifier copy() {
 		return copy(CopyStyle.withoutLocations);
 	}
@@ -140,15 +148,15 @@ public class CPPASTCompositeTypeSpecifier extends CPPASTBaseDeclSpecifier
     }
 
 	public ICPPClassScope getScope() {
-		if (fScope == null)
+		if (fScope == null) {
 			fScope = new CPPClassScope(this);
+			if (fAmbiguitiesResolved) {
+				fScope.createImplicitMembers();
+			}
+		}
 		return fScope;
 	}
     	
-    public void setScope(ICPPClassScope scope) {
-        this.fScope = scope;
-    }
-
     @Override
 	public boolean accept(ASTVisitor action) {
 		if (action.shouldVisitDeclSpecifiers) {

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTTemplateId.java

@@ -15,8 +15,10 @@ package org.eclipse.cdt.internal.core.dom.parser.cpp;
 import org.eclipse.cdt.core.dom.ast.ASTTypeUtil;
 import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.IASTExpression;
+import org.eclipse.cdt.core.dom.ast.IASTFileLocation;
 import org.eclipse.cdt.core.dom.ast.IASTName;
 import org.eclipse.cdt.core.dom.ast.IASTNode;
+import org.eclipse.cdt.core.dom.ast.IASTNodeLocation;
 import org.eclipse.cdt.core.dom.ast.IASTTypeId;
 import org.eclipse.cdt.core.dom.ast.IBinding;
 import org.eclipse.cdt.core.dom.ast.ISemanticProblem;
@@ -128,7 +130,11 @@ public class CPPASTTemplateId extends CPPASTNameBase implements ICPPASTTemplateI
     		if (needComma)
     			buf.append(", "); //$NON-NLS-1$
     		needComma= true;
-    		if (arg instanceof IASTExpression) {
+    		IASTNodeLocation[] nodeLocs = arg.getNodeLocations();
+    		if (nodeLocs.length == 1 && nodeLocs[0] instanceof IASTFileLocation) {
+    			buf.append(arg.getRawSignature());
+    			cleanupWhitespace= true;
+    		} else if (arg instanceof IASTExpression) {
     			IValue value= Value.create((IASTExpression) arg, Value.MAX_RECURSION_DEPTH);
     			if (value != Value.UNKNOWN && !Value.isDependentValue(value)) {
         			buf.append(value.getSignature());

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassScope.java

@@ -71,18 +71,18 @@ public class CPPClassScope extends CPPScope implements ICPPClassScope {
 
 	public CPPClassScope(ICPPASTCompositeTypeSpecifier physicalNode) {
 		super(physicalNode);
-		((CPPASTCompositeTypeSpecifier) physicalNode).setScope(this);
-		createImplicitMembers();
 	}
 
 	public EScopeKind getKind() {
 		return EScopeKind.eClassType;
 	}
 
-	// 12.1 The default constructor, copy constructor, copy assignment operator, and destructor are
+	/**
-	//special member functions.  The implementation will implicitly declare these member functions
+	 * Add in default constructor, copy constructor, copy assignment operator and destructor,
-	//for a class type when the program does not declare them.
+	 * if appropriate.
-	private void createImplicitMembers() {
+	 * Method will be called after ambiguity resolution.
+	 */
+	public void createImplicitMembers() {
 	    //create bindings for the implicit members, if the user declared them then those declarations
 	    //will resolve to these bindings.
 	    ICPPASTCompositeTypeSpecifier compTypeSpec = (ICPPASTCompositeTypeSpecifier) getPhysicalNode();

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassSpecialization.java

@@ -12,22 +12,15 @@
  *******************************************************************************/
 package org.eclipse.cdt.internal.core.dom.parser.cpp;
 
-import org.eclipse.cdt.core.dom.ast.ASTVisitor;
-import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
-import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
-import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
 import org.eclipse.cdt.core.dom.ast.IASTName;
 import org.eclipse.cdt.core.dom.ast.IASTNode;
 import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration;
-import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
 import org.eclipse.cdt.core.dom.ast.IBinding;
 import org.eclipse.cdt.core.dom.ast.IField;
 import org.eclipse.cdt.core.dom.ast.IProblemBinding;
 import org.eclipse.cdt.core.dom.ast.IType;
 import org.eclipse.cdt.core.dom.ast.ITypedef;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier;
-import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTElaboratedTypeSpecifier;
-import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateDeclaration;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPBase;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassScope;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassSpecialization;
@@ -35,7 +28,6 @@ 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.ICPPField;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPMethod;
-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;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateParameterMap;
@@ -51,7 +43,6 @@ public class CPPClassSpecialization extends CPPSpecialization
 
 	private ICPPClassSpecializationScope specScope;
 	private ObjectMap specializationMap= ObjectMap.EMPTY_MAP;
-	private boolean checked;
 
 	public CPPClassSpecialization(ICPPClassType specialized, IBinding owner, ICPPTemplateParameterMap argumentMap) {
 		super(specialized, owner, argumentMap);
@@ -82,84 +73,8 @@ public class CPPClassSpecialization extends CPPSpecialization
 		}
 	}
 	
-	private class FindDeclarationDefinitionAction extends ASTVisitor {
-		private char [] nameArray = CPPClassSpecialization.this.getNameCharArray();
-		public IASTName foundDef = null;
-		public IASTName foundDecl = null;
-
-		{
-			shouldVisitNames          = true;
-			shouldVisitDeclarations   = true;
-			shouldVisitDeclSpecifiers = true;
-			shouldVisitDeclarators    = true;
-		}
-
-		@Override
-		public int visit(IASTName name) {
-			final IASTNode parent = name.getParent();
-			final boolean isDef = parent instanceof ICPPASTCompositeTypeSpecifier;
-			final boolean isDecl = !isDef && parent instanceof ICPPASTElaboratedTypeSpecifier
-					&& parent.getParent() instanceof IASTSimpleDeclaration;
-			if (isDef || isDecl) {
-				name= name.getLastName();
-				if (CharArrayUtils.equals(name.getLookupKey(), nameArray)) {
-					IBinding binding = name.resolveBinding();
-					if (binding == CPPClassSpecialization.this) {
-						if (isDef) {
-							foundDef= name;
-							return PROCESS_ABORT;
-						}
-						if (foundDecl == null)
-							foundDecl= name;
-					}
-				}
-			}
-			// Don't look at members of qualified names or template ids.
-			return PROCESS_SKIP;
-		}
-
-		@Override
-		public int visit( IASTDeclaration declaration ){ 
-			if(declaration instanceof IASTSimpleDeclaration || declaration instanceof ICPPASTTemplateDeclaration)
-				return PROCESS_CONTINUE;
-			return PROCESS_SKIP; 
-		}
-		@Override
-		public int visit( IASTDeclSpecifier declSpec ){
-			return (declSpec instanceof ICPPASTCompositeTypeSpecifier ) ? PROCESS_CONTINUE : PROCESS_SKIP; 
-		}
-		@Override
-		public int visit( IASTDeclarator declarator ) 			{ return PROCESS_SKIP; }
-	}
-
 	public void checkForDefinition() {
-		if( !checked && definition == null ) {
+		// Ambiguity resolution ensures that declarations and definitions are resolved.
-			IBinding orig= getSpecializedBinding();
-			IASTTranslationUnit tu= null;
-			while (orig != null) {
-				if (orig instanceof ICPPInternalBinding) {
-					IASTNode node= ((ICPPInternalBinding) orig).getDefinition();
-					if (node != null)  {
-						tu= node.getTranslationUnit();
-						if (tu != null)
-							break;
-					}
-				}
-				if (!(orig instanceof ICPPSpecialization))
-					break;
-				orig= ((ICPPSpecialization) orig).getSpecializedBinding();
-			}
-			if (tu != null) {
-				FindDeclarationDefinitionAction action= new FindDeclarationDefinitionAction();
-				tu.accept( action );
-				definition = action.foundDef;
-				if (definition == null && action.foundDecl != null) {
-					addDeclaration(action.foundDecl);
-				}
-			}
-			checked = true;
-		}
-		return;
 	}
 
 	public ICPPASTCompositeTypeSpecifier getCompositeTypeSpecifier() {

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassTemplate.java

@@ -14,14 +14,9 @@
 package org.eclipse.cdt.internal.core.dom.parser.cpp;
 
 import org.eclipse.cdt.core.dom.ast.ASTTypeUtil;
-import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.DOMException;
-import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
-import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
-import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
 import org.eclipse.cdt.core.dom.ast.IASTName;
 import org.eclipse.cdt.core.dom.ast.IASTNode;
-import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration;
 import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
 import org.eclipse.cdt.core.dom.ast.IBinding;
 import org.eclipse.cdt.core.dom.ast.IField;
@@ -31,8 +26,6 @@ import org.eclipse.cdt.core.dom.ast.ITypedef;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTElaboratedTypeSpecifier;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTQualifiedName;
-import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateDeclaration;
-import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateId;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPBase;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassScope;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassTemplate;
@@ -46,9 +39,7 @@ import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateParameter;
 import org.eclipse.cdt.core.index.IIndex;
 import org.eclipse.cdt.core.index.IIndexBinding;
 import org.eclipse.cdt.core.parser.util.ArrayUtil;
-import org.eclipse.cdt.core.parser.util.CharArrayUtils;
 import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPTemplates;
-import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor;
 
 /**
  * Represents a class template.
@@ -58,56 +49,7 @@ public class CPPClassTemplate extends CPPTemplateDefinition implements ICPPClass
 
 	private ICPPClassTemplate fIndexBinding= null;
 	private boolean checkedIndex= false;
-	private boolean checkedDefinition= false;
 	
-	private class FindDefinitionAction extends ASTVisitor {
-		private char[] nameArray = CPPClassTemplate.this.getNameCharArray();
-		public IASTName result = null;
-
-		FindDefinitionAction() {
-			shouldVisitNames          = true;
-			shouldVisitDeclarations   = true;
-			shouldVisitDeclSpecifiers = true;
-			shouldVisitDeclarators    = true;
-		}
-
-		@Override
-		public int visit(IASTName name) {
-			if (name instanceof ICPPASTTemplateId || name instanceof ICPPASTQualifiedName)
-				return PROCESS_CONTINUE;
-			char[] c = name.getLookupKey();
-			if (name.getParent() instanceof ICPPASTTemplateId)
-				name = (IASTName) name.getParent();
-			if (name.getParent() instanceof ICPPASTQualifiedName) {
-				IASTName[] ns = ((ICPPASTQualifiedName) name.getParent()).getNames();
-				if (ns[ns.length - 1] != name)
-					return PROCESS_CONTINUE;
-				name = (IASTName) name.getParent();
-			}
-
-			if (name.getParent() instanceof ICPPASTCompositeTypeSpecifier && CharArrayUtils.equals(c, nameArray)) {
-				IBinding binding = name.resolveBinding();
-				if (binding == CPPClassTemplate.this) {
-					result = name.getLastName();
-					return PROCESS_ABORT;
-				}
-			}
-			return PROCESS_CONTINUE; 
-		}
-
-		@Override
-		public int visit(IASTDeclaration declaration) { 
-			if (declaration instanceof IASTSimpleDeclaration || declaration instanceof ICPPASTTemplateDeclaration)
-				return PROCESS_CONTINUE;
-			return PROCESS_SKIP; 
-		}
-		@Override
-		public int visit(IASTDeclSpecifier declSpec) {
-			return (declSpec instanceof ICPPASTCompositeTypeSpecifier) ? PROCESS_CONTINUE : PROCESS_SKIP; 
-		}
-		@Override
-		public int visit(IASTDeclarator declarator) { return PROCESS_SKIP; }
-	}
 
 	private ICPPClassTemplatePartialSpecialization[] partialSpecializations = null;
 	private ICPPDeferredClassInstance fDeferredInstance;
@@ -117,24 +59,7 @@ public class CPPClassTemplate extends CPPTemplateDefinition implements ICPPClass
 	}
 
 	public void checkForDefinition() {
-		if (checkedDefinition)
+		// Ambiguity resolution ensures that definitions are resolved.
-			return;
-	
-		checkedDefinition= true;
-		if (definition != null)
-			return;
-	
-		FindDefinitionAction action = new FindDefinitionAction();
-		IASTNode node = CPPVisitor.getContainingBlockItem(declarations[0]).getParent();
-		while (node instanceof ICPPASTTemplateDeclaration)
-			node = node.getParent();
-		node.accept(action);
-		definition = action.result;
-
-		if (definition == null) {
-			node.getTranslationUnit().accept(action);
-			definition = action.result;
-		}
 	}
 	
 	public void addPartialSpecialization(ICPPClassTemplatePartialSpecialization spec) {

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassType.java

@@ -15,16 +15,11 @@
 package org.eclipse.cdt.internal.core.dom.parser.cpp;
 
 import org.eclipse.cdt.core.dom.ILinkage;
-import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.DOMException;
 import org.eclipse.cdt.core.dom.ast.IASTCompositeTypeSpecifier;
-import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
-import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
-import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
 import org.eclipse.cdt.core.dom.ast.IASTName;
 import org.eclipse.cdt.core.dom.ast.IASTNode;
 import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration;
-import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
 import org.eclipse.cdt.core.dom.ast.IBinding;
 import org.eclipse.cdt.core.dom.ast.IField;
 import org.eclipse.cdt.core.dom.ast.IScope;
@@ -33,8 +28,6 @@ import org.eclipse.cdt.core.dom.ast.ITypedef;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTElaboratedTypeSpecifier;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTQualifiedName;
-import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateDeclaration;
-import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateId;
 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;
@@ -46,7 +39,6 @@ import org.eclipse.cdt.core.dom.ast.cpp.ICPPMethod;
 import org.eclipse.cdt.core.index.IIndex;
 import org.eclipse.cdt.core.index.IIndexBinding;
 import org.eclipse.cdt.core.parser.util.ArrayUtil;
-import org.eclipse.cdt.core.parser.util.CharArrayUtils;
 import org.eclipse.cdt.internal.core.dom.Linkage;
 import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
 import org.eclipse.cdt.internal.core.dom.parser.ProblemBinding;
@@ -103,58 +95,6 @@ public class CPPClassType extends PlatformObject implements ICPPInternalClassTyp
 		}
 	}
 
-	private class FindDefinitionAction extends ASTVisitor {
-		private char[] nameArray = CPPClassType.this.getNameCharArray();
-		public IASTName result = null;
-
-		{
-			shouldVisitNames          = true;
-			shouldVisitDeclarations   = true;
-			shouldVisitDeclSpecifiers = true;
-			shouldVisitDeclarators    = true;
-		}
-
-		@Override
-		public int visit(IASTName name) {
-			if (name instanceof ICPPASTTemplateId)
-				return PROCESS_SKIP;
-			if (name instanceof ICPPASTQualifiedName)
-				return PROCESS_CONTINUE;
-			char[] c = name.getLookupKey();
-
-			if (name.getParent() instanceof ICPPASTQualifiedName) {
-				IASTName[] ns = ((ICPPASTQualifiedName) name.getParent()).getNames();
-				if (ns[ns.length - 1] != name)
-					return PROCESS_CONTINUE;
-				name = (IASTName) name.getParent();
-			}
-
-			if (name.getParent() instanceof ICPPASTCompositeTypeSpecifier && CharArrayUtils.equals(c, nameArray)) {
-				IBinding binding = name.resolveBinding();
-				if (binding == CPPClassType.this) {
-					result= name.getLastName();
-					return PROCESS_ABORT;
-				}
-			}
-			return PROCESS_CONTINUE; 
-		}
-
-		@Override
-		public int visit(IASTDeclaration declaration) { 
-			if (declaration instanceof IASTSimpleDeclaration || declaration instanceof ICPPASTTemplateDeclaration)
-				return PROCESS_CONTINUE;
-			return PROCESS_SKIP; 
-		}
-		@Override
-		public int visit(IASTDeclSpecifier declSpec) {
-			return (declSpec instanceof ICPPASTCompositeTypeSpecifier) ? PROCESS_CONTINUE : PROCESS_SKIP; 
-		}
-		@Override
-		public int visit(IASTDeclarator declarator) {
-			return PROCESS_SKIP;
-		}
-	}
-
 	private IASTName definition;
 	private IASTName[] declarations;
 	private boolean checked = false;
@@ -188,30 +128,16 @@ public class CPPClassType extends PlatformObject implements ICPPInternalClassTyp
 	}
 
 	public void checkForDefinition() {
-		if (!checked && definition == null) {
+		// Ambiguity resolution ensures that definitions are resolved.
-			FindDefinitionAction action = new FindDefinitionAction();
+		if (!checked) {
-			IASTNode node = CPPVisitor.getContainingBlockItem(getPhysicalNode()).getParent();
+			if (definition == null && typeInIndex == null) {
-
+				IIndex index= getPhysicalNode().getTranslationUnit().getIndex();
-			if (node instanceof ICPPASTCompositeTypeSpecifier)
+				if (index != null) {
-				node = CPPVisitor.getContainingBlockItem(node.getParent());
+					typeInIndex= (ICPPClassType) index.adaptBinding(this);
-			while(node instanceof ICPPASTTemplateDeclaration)
-				node = node.getParent();
-			node.accept(action);
-			definition = action.result;
-
-			if (definition == null) {
-				final IASTTranslationUnit translationUnit = node.getTranslationUnit();
-				translationUnit.accept(action);
-				definition = action.result;
-				if (definition == null && typeInIndex == null) {
-					IIndex index= translationUnit.getIndex();
-					if (index != null) {
-						typeInIndex= (ICPPClassType) index.adaptBinding(this);
-					}
 				}
 			}
+			checked = true;
 		}
-		checked = true;
 	}
 
 	public ICPPASTCompositeTypeSpecifier getCompositeTypeSpecifier() {
@@ -291,26 +217,30 @@ public class CPPClassType extends PlatformObject implements ICPPInternalClassTyp
 	}
 
 	public void addDefinition(IASTNode node) {
-		if (node instanceof ICPPASTCompositeTypeSpecifier)
+		if (node instanceof ICPPASTCompositeTypeSpecifier) {
 			definition = ((ICPPASTCompositeTypeSpecifier)node).getName();
+		} else {
+			assert false;
+		}
 	}
 	
 	public void addDeclaration(IASTNode node) {
-		if (!(node instanceof ICPPASTElaboratedTypeSpecifier))
+		if (node instanceof ICPPASTElaboratedTypeSpecifier) {
-			return;
+			IASTName name = ((ICPPASTElaboratedTypeSpecifier) node).getName();
 
-		IASTName name = ((ICPPASTElaboratedTypeSpecifier) node).getName();
+			if (declarations == null) {
+				declarations = new IASTName[] { name };
+				return;
+			}
 
-		if (declarations == null) {
+			// Keep the lowest offset declaration in [0]
-			declarations = new IASTName[] { name };
+			if (declarations.length > 0 && ((ASTNode)node).getOffset() < ((ASTNode) declarations[0]).getOffset()) {
-			return;
+				declarations = (IASTName[]) ArrayUtil.prepend(IASTName.class, declarations, name);
-		}
+			} else {
-
+				declarations = (IASTName[]) ArrayUtil.append(IASTName.class, declarations, name);
-		// Keep the lowest offset declaration in [0]
+			}
-		if (declarations.length > 0 && ((ASTNode)node).getOffset() < ((ASTNode) declarations[0]).getOffset()) {
-			declarations = (IASTName[]) ArrayUtil.prepend(IASTName.class, declarations, name);
 		} else {
-			declarations = (IASTName[]) ArrayUtil.append(IASTName.class, declarations, name);
+			assert false;
 		}
 	}
 

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPVisitor.java

@@ -222,26 +222,29 @@ public class CPPVisitor extends ASTQueries {
 		IASTNode parent = name.getParent();
 		IBinding binding = null;
 		if (parent instanceof IASTNamedTypeSpecifier ||
-			    parent instanceof ICPPASTQualifiedName ||
 				parent instanceof ICPPASTBaseSpecifier ||
 				parent instanceof ICPPASTConstructorChainInitializer ||
 				name.getPropertyInParent() == ICPPASTNamespaceAlias.MAPPING_NAME) {
 		    if (name.getLookupKey().length == 0)
 		    	return null;
 		  
+			return CPPSemantics.resolveBinding(name); 
+		} else if (parent instanceof ICPPASTQualifiedName) {
+		    if (name.getLookupKey().length == 0)
+		    	return null;
+
+			final ICPPASTQualifiedName qname = (ICPPASTQualifiedName) parent;
+			if (name != qname.getLastName())
+				return CPPSemantics.resolveBinding(name);
+			
+			parent = parent.getParent();
 			binding = CPPSemantics.resolveBinding(name);
-			if (binding instanceof IProblemBinding && parent instanceof ICPPASTQualifiedName && 
+			if (binding instanceof IProblemBinding && !(parent instanceof ICPPASTNamespaceAlias)) {
-					!(parent.getParent() instanceof ICPPASTNamespaceAlias)) {
+				final IASTName[] ns = qname.getNames();
-				final ICPPASTQualifiedName qname = (ICPPASTQualifiedName) parent;
+				if (ns.length > 1 && ns[ns.length - 2].getBinding() instanceof IProblemBinding)
-			    final IASTName[] ns = qname.getNames();
+					return binding;
-			    if (ns[ns.length - 1] != name) 
-			    	return binding;
 
-			    if (ns.length > 1 && ns[ns.length - 2].getBinding() instanceof IProblemBinding)
+				if (((IProblemBinding) binding).getID() == IProblemBinding.SEMANTIC_MEMBER_DECLARATION_NOT_FOUND) {
-			    	return binding;
-			    
-				parent = parent.getParent();
-			    if (((IProblemBinding) binding).getID() == IProblemBinding.SEMANTIC_MEMBER_DECLARATION_NOT_FOUND) {
 					IASTNode node = getContainingBlockItem(name.getParent());
 					ASTNodeProperty prop= node.getPropertyInParent();
 					while (prop == ICPPASTTemplateDeclaration.OWNED_DECLARATION) {
@@ -264,8 +267,13 @@ public class CPPVisitor extends ASTQueries {
 				        return binding;
 				}
 			} else {
-				if (binding instanceof ICPPClassType && binding instanceof IIndexBinding && name.isDefinition()) {
+				if (parent instanceof IASTCompositeTypeSpecifier) {
-					parent= parent.getParent(); // need to create an ast binding.
+					if (binding instanceof IIndexBinding) {
+						// Need to create an AST binding
+					} else {
+						ASTInternal.addDefinition(binding, parent);
+						return binding;
+					}
 				} else {
 					return binding;
 				}
@@ -457,21 +465,46 @@ public class CPPVisitor extends ASTQueries {
     				}
     			}
         	}
-            if (!(binding instanceof ICPPInternalBinding) || !(binding instanceof ICPPClassType) && name.isActive()) {
+        	if (binding instanceof ICPPInternalBinding) {
-    			if (elabType.getKind() != IASTElaboratedTypeSpecifier.k_enum) {
+        		if (!name.isActive())
-					if (template)
+        			return binding;
-	            		binding = new CPPClassTemplate(name);
+        		
-	            	else
+        		if (binding instanceof ICPPClassType) {
-						binding = new CPPClassType(name, binding);
+        			final ICPPInternalBinding ib = (ICPPInternalBinding) binding;
-					// name may live in a different scope, so make sure to add it to the owner scope, as well.
+        			if ((binding instanceof ICPPClassTemplate) == template) {
-    				ASTInternal.addName(scope,  elabType.getName());
+        				ib.addDeclaration(elabType);
-    			}
+        				return binding;
-    		} else {
+        			}
-				if ((binding instanceof ICPPClassTemplate) == template) {
+        			if (CPPSemantics.declaredBefore(binding, name, false)) {
-					ASTInternal.addDeclaration(binding, elabType);
+        				return new ProblemBinding(name, IProblemBinding.SEMANTIC_INVALID_REDECLARATION);
-				} else {
+        			}
-    				binding = new ProblemBinding(name, IProblemBinding.SEMANTIC_INVALID_REDECLARATION);
+
-    			}
+        			// Mark the other declarations as problem and create the binding
+        			final IASTNode[] decls = ib.getDeclarations();
+        			if (decls != null) {
+        				for (IASTNode decl : decls) {
+        					if (decl instanceof IASTName) {
+        						final IASTName n = (IASTName) decl;
+        						n.setBinding(new ProblemBinding(n, IProblemBinding.SEMANTIC_INVALID_REDECLARATION));
+        					}
+        				}
+        			}
+        			IASTNode decl= ib.getDefinition();
+        			if (decl instanceof IASTName) {
+        				final IASTName n = (IASTName) decl;
+        				n.setBinding(new ProblemBinding(n, IProblemBinding.SEMANTIC_INVALID_REDEFINITION));
+        			}
+        		} 
+        	}
+        	
+        	// Create a binding
+        	if (elabType.getKind() != IASTElaboratedTypeSpecifier.k_enum) {
+        		if (template)
+        			binding = new CPPClassTemplate(name);
+        		else
+        			binding = new CPPClassType(name, binding);
+        		// name may live in a different scope, so make sure to add it to the owner scope, as well.
+        		ASTInternal.addName(scope,  elabType.getName());
     		}
         } catch (DOMException e) {
             binding = e.getProblem();
@@ -2314,7 +2347,7 @@ public class CPPVisitor extends ASTQueries {
 	}
 
 	public static IBinding findNameOwner(IASTName name, boolean allowFunction) {
-		IASTNode node= name;
+		IASTNode node= name.getLastName();
 		while (node instanceof IASTName) {
 			if (node instanceof ICPPASTQualifiedName) {
 				IASTName[] qn= ((ICPPASTQualifiedName) node).getNames();