diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
index ca708da7e2d..36c54e4001b 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
@@ -4779,15 +4779,15 @@ public class AST2CPPTests extends AST2BaseTest {
     
     public void testBug84478_2() throws Exception {
     	StringBuffer buffer = new StringBuffer();
-    	buffer.append("void f(){                          \n");
-    	buffer.append("   if( int x = 1 )  x++;           \n");
-    	buffer.append("   else             x--;           \n");
-    	buffer.append("   while( int y = 2 )              \n");
-    	buffer.append("      y++;                         \n");
-    	buffer.append("   for( int a = 1; int b = 2; b++){ \n");
-    	buffer.append("      a++; b++;                    \n");
-    	buffer.append("   }                               \n");
-    	buffer.append("}                                  \n");
+    	buffer.append("void f(){                          \n"); //$NON-NLS-1$
+    	buffer.append("   if( int x = 1 )  x++;           \n"); //$NON-NLS-1$
+    	buffer.append("   else             x--;           \n"); //$NON-NLS-1$
+    	buffer.append("   while( int y = 2 )              \n"); //$NON-NLS-1$
+    	buffer.append("      y++;                         \n"); //$NON-NLS-1$
+    	buffer.append("   for( int a = 1; int b = 2; b++){ \n"); //$NON-NLS-1$
+    	buffer.append("      a++; b++;                    \n"); //$NON-NLS-1$
+    	buffer.append("   }                               \n"); //$NON-NLS-1$
+    	buffer.append("}                                  \n"); //$NON-NLS-1$
     	
     	IASTTranslationUnit tu = parse(buffer.toString(), ParserLanguage.CPP, true, true );
     	CPPNameCollector col = new CPPNameCollector();
@@ -4810,10 +4810,10 @@ public class AST2CPPTests extends AST2BaseTest {
     
     public void testBug100415() throws Exception {
     	StringBuffer buffer = new StringBuffer();
-    	buffer.append("void free( void * );         \n");
-    	buffer.append("void f( char **p ){          \n");
-    	buffer.append("   free( p );                \n");
-    	buffer.append("}                            \n");
+    	buffer.append("void free( void * );         \n"); //$NON-NLS-1$
+    	buffer.append("void f( char **p ){          \n"); //$NON-NLS-1$
+    	buffer.append("   free( p );                \n"); //$NON-NLS-1$
+    	buffer.append("}                            \n"); //$NON-NLS-1$
     	
     	IASTTranslationUnit tu = parse(buffer.toString(), ParserLanguage.CPP, true, true );
     	CPPNameCollector col = new CPPNameCollector();
@@ -4825,17 +4825,17 @@ public class AST2CPPTests extends AST2BaseTest {
     
     public void testBug86688() throws Exception {
     	StringBuffer buffer = new StringBuffer();
-    	buffer.append("class X;                 \n");
-    	buffer.append("void f() {               \n");
-    	buffer.append("   class A {             \n");
-    	buffer.append("      friend class X;    \n");
-    	buffer.append("   };                    \n");
-    	buffer.append("}                        \n");
-    	buffer.append("namespace B {            \n");
-    	buffer.append("   class A {             \n");
-    	buffer.append("      friend class X;    \n");
-    	buffer.append("   };                    \n");
-    	buffer.append("}                        \n");
+    	buffer.append("class X;                 \n"); //$NON-NLS-1$
+    	buffer.append("void f() {               \n"); //$NON-NLS-1$
+    	buffer.append("   class A {             \n"); //$NON-NLS-1$
+    	buffer.append("      friend class X;    \n"); //$NON-NLS-1$
+    	buffer.append("   };                    \n"); //$NON-NLS-1$
+    	buffer.append("}                        \n"); //$NON-NLS-1$
+    	buffer.append("namespace B {            \n"); //$NON-NLS-1$
+    	buffer.append("   class A {             \n"); //$NON-NLS-1$
+    	buffer.append("      friend class X;    \n"); //$NON-NLS-1$
+    	buffer.append("   };                    \n"); //$NON-NLS-1$
+    	buffer.append("}                        \n"); //$NON-NLS-1$
     	
     	IASTTranslationUnit tu = parse(buffer.toString(), ParserLanguage.CPP, true, true );
     	CPPNameCollector col = new CPPNameCollector();
@@ -4846,4 +4846,19 @@ public class AST2CPPTests extends AST2BaseTest {
         assertTrue( col.getName(3).resolveBinding() instanceof ICPPClassType );
         assertSame( X, col.getName(6).resolveBinding() );
     }
+    
+    public void testBug100403() throws Exception {
+    	StringBuffer buffer = new StringBuffer();
+    	buffer.append("class m {                  \n"); //$NON-NLS-1$
+    	buffer.append("   int m::f();             \n"); //$NON-NLS-1$
+    	buffer.append("};                         \n"); //$NON-NLS-1$
+    	buffer.append("int m::f(){}               \n"); //$NON-NLS-1$
+    	
+    	IASTTranslationUnit tu = parse(buffer.toString(), ParserLanguage.CPP, true, true );
+    	CPPNameCollector col = new CPPNameCollector();
+        tu.accept(  col );
+        
+        ICPPMethod f = (ICPPMethod) col.getName(3).resolveBinding();
+        assertSame( f, col.getName(6).resolveBinding() );
+    }
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java
index 8b5f8187bea..e7227ba4456 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java
@@ -113,7 +113,6 @@ import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateTemplateParameter;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateTypeParameter;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPUsingDeclaration;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier.ICPPASTBaseSpecifier;
-import org.eclipse.cdt.core.parser.ast.IASTNamespaceDefinition;
 import org.eclipse.cdt.core.parser.util.ArrayUtil;
 import org.eclipse.cdt.core.parser.util.CharArrayObjectMap;
 import org.eclipse.cdt.core.parser.util.CharArrayUtils;
@@ -175,7 +174,7 @@ public class CPPSemantics {
 		public boolean includeBlockItem( IASTNode item ){
 		    if( astName.getPropertyInParent() == STRING_LOOKUP_PROPERTY ) return true;
 		    if( ( astName != null && astName.getParent() instanceof IASTIdExpression ) || 
-		        item instanceof IASTNamespaceDefinition  ||
+		        item instanceof ICPPASTNamespaceDefinition  ||
 	           (item instanceof IASTSimpleDeclaration && ((IASTSimpleDeclaration)item).getDeclSpecifier() instanceof IASTCompositeTypeSpecifier ) ||
 			    item instanceof ICPPASTTemplateDeclaration )
 		    {
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPVisitor.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPVisitor.java
index f316b87d5c4..86f37235a40 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPVisitor.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPVisitor.java
@@ -162,9 +162,13 @@ public class CPPVisitor {
 			parent instanceof ICPPASTTemplateId ) 
 		{
 			binding = CPPSemantics.resolveBinding( name ); 
-			if( binding instanceof IProblemBinding && parent instanceof ICPPASTQualifiedName && 
-			    ((IProblemBinding)binding).getID() != IProblemBinding.SEMANTIC_MEMBER_DECLARATION_NOT_FOUND )
+			if( binding instanceof IProblemBinding && parent instanceof ICPPASTQualifiedName )
 			{
+				if( ((IProblemBinding)binding).getID() == IProblemBinding.SEMANTIC_MEMBER_DECLARATION_NOT_FOUND ){
+					IASTNode node = getContainingBlockItem( name.getParent() );
+					if( node.getPropertyInParent() != IASTCompositeTypeSpecifier.MEMBER_DECLARATION )
+						return binding;
+				}
 			    IASTName [] ns = ((ICPPASTQualifiedName)parent).getNames();
 			    if( ns[ ns.length - 1 ] == name )
 					parent = parent.getParent();
@@ -881,7 +885,7 @@ public class CPPVisitor {
 					return p;
 			} else if ( parent instanceof IASTStatement || parent instanceof IASTTranslationUnit ) {
 				return parent;
-			} else if( parent instanceof IASTFunctionDeclarator ){
+			} else if( parent instanceof IASTFunctionDeclarator && node.getPropertyInParent() == IASTStandardFunctionDeclarator.FUNCTION_PARAMETER ){
 			    return node;
 			} else if( parent instanceof IASTEnumerationSpecifier.IASTEnumerator ){
 			    return parent;