diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseASTTest.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseASTTest.java
index 7a739d0edb5..b46019c27a9 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseASTTest.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseASTTest.java
@@ -2164,5 +2164,65 @@ public class CompleteParseASTTest extends CompleteParseBaseTest
         parse( writer.toString() );
         assertFalse( callback.getProblems().hasNext() );
     }
+    
+
+    public void testBug72692A() throws Exception
+	{
+    	Writer writer = new StringWriter();
+    	writer.write( "extern double pow(double, double);\n");
+    	writer.write( "extern double pow2(double, double){}\n");
+    	writer.write( "namespace DS {\n");
+    	writer.write( "using ::pow;\n");
+    	writer.write( "using ::pow2;\n");
+    	writer.write( "}\n");
+    	writer.write( "using DS::pow;\n");
+    	writer.write( "using DS::pow2;\n");
+    	parse( writer.toString() );
+	}
+    
+    public void testBug72692B() throws Exception
+	{
+    	Writer writer = new StringWriter();
+    	writer.write( "extern double pow(double, double);\n");
+    	writer.write( "namespace DS {\n");
+    	writer.write( "using ::pow;\n");
+    	writer.write( "inline float pow(float __x, float __y)\n" );
+    	writer.write( "{ return ::pow(static_cast<double>(__x), static_cast<double>(__y)); }\n" );
+    	writer.write( "}\n");
+    	writer.write( "using namespace DS;\n");
+    	writer.write( "float foo() { double d1 = 3.0, d2 = 4.0; return pow(d1, d2); }");
+    	parse( writer.toString() );
+	}
+
+    public void testBug72692C() throws Exception
+	{
+    	Writer writer = new StringWriter();
+    	writer.write( "extern double pow(double, double){}\n");
+    	writer.write( "namespace DS {\n");
+    	writer.write( "using ::pow;\n");
+    	writer.write( "}\n");
+    	writer.write( "using DS::pow;\n");
+    	parse( writer.toString() );
+	}
+
+    
+    public void testBug74575A() throws Exception
+	{
+    	Writer writer = new StringWriter();
+    	writer.write( "double pow(double, double);\n");
+    	writer.write( "float pow(float __x, float __y)\n" );
+    	writer.write( "{ return 0; }\n");
+    	Iterator i = parse( writer.toString() ).getDeclarations();
+    	IASTFunction doublePow = (IASTFunction) i.next();
+    	IASTFunction floatPow = (IASTFunction) i.next();
+    	assertFalse( i.hasNext() );
+    	assertEquals( floatPow.getName(), "pow" );
+    	assertEquals( doublePow.getName(), "pow");
+    	assertEquals( ((IASTSimpleTypeSpecifier)doublePow.getReturnType().getTypeSpecifier()).getType(), IASTSimpleTypeSpecifier.Type.DOUBLE );
+    	assertEquals( ((IASTSimpleTypeSpecifier)floatPow.getReturnType().getTypeSpecifier()).getType(), IASTSimpleTypeSpecifier.Type.FLOAT );
+    	assertFalse( doublePow.hasFunctionBody() );
+    	assertTrue( floatPow.hasFunctionBody() ); 
+	}
+    
 }
 
diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ParserSymbolTableTest.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ParserSymbolTableTest.java
index 256057f31bc..cd671df3690 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ParserSymbolTableTest.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ParserSymbolTableTest.java
@@ -1172,7 +1172,7 @@ public class ParserSymbolTableTest extends TestCase {
 		
 		assertEquals( using.getReferencedSymbols().get(0), f1 );
 		
-		IParameterizedSymbol usingF = (IParameterizedSymbol)using.getDeclaredSymbols().get(0); 
+		IParameterizedSymbol usingF = (IParameterizedSymbol)using.getReferencedSymbols().get(0); 
 		
 		look = compUnit.lookup("A".toCharArray()); //$NON-NLS-1$
 		assertEquals( look, A );
@@ -1210,13 +1210,10 @@ public class ParserSymbolTableTest extends TestCase {
 		assertTrue( list.contains( f1 ) );
 		assertTrue( list.contains( f2 ) );
 		assertEquals( list.size(), 2 );
-
-		int index = list.indexOf( f2 );
-		list = using.getDeclaredSymbols();
 		
 		look = bar.unqualifiedFunctionLookup( "f".toCharArray(), paramList ); //$NON-NLS-1$
 		assertTrue( look != null );
-		assertEquals( look, list.get( index ) );
+		assertEquals( look, f2);
 		assertEquals( table.getTypeInfoProvider().numAllocated(), 0 );
 	}
 	
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/ast/complete/ASTFunction.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/ast/complete/ASTFunction.java
index b2d37474c54..bdb9863f5dd 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/ast/complete/ASTFunction.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/ast/complete/ASTFunction.java
@@ -136,7 +136,7 @@ public class ASTFunction extends ASTScope implements IASTFunction
      */
     public void setHasFunctionBody(boolean b)
     {
-        hasFunctionBody = true;
+        hasFunctionBody = b;
     }
     /* (non-Javadoc)
      * @see org.eclipse.cdt.core.parser.ast.IASTFunction#hasFunctionBody()
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/ast/complete/CompleteParseASTFactory.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/ast/complete/CompleteParseASTFactory.java
index 3b166f51829..bb527b21c51 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/ast/complete/CompleteParseASTFactory.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/ast/complete/CompleteParseASTFactory.java
@@ -1969,8 +1969,10 @@ public class CompleteParseASTFactory extends BaseASTFactory implements IASTFacto
         	type = ITypeInfo.t_bool;
         else if( kind == IASTSimpleTypeSpecifier.Type.CHAR )
 			type = ITypeInfo.t_char;
-		else if( kind == IASTSimpleTypeSpecifier.Type.DOUBLE ||kind == IASTSimpleTypeSpecifier.Type.FLOAT  ) 
+		else if( kind == IASTSimpleTypeSpecifier.Type.DOUBLE ) 
 			type = ITypeInfo.t_double;
+		else if( kind == IASTSimpleTypeSpecifier.Type.FLOAT  )
+			type = ITypeInfo.t_float;
 		else if( kind == IASTSimpleTypeSpecifier.Type.INT )
 			type = ITypeInfo.t_int;
 		else if( kind == IASTSimpleTypeSpecifier.Type.VOID )
@@ -2187,8 +2189,12 @@ public class CompleteParseASTFactory extends BaseASTFactory implements IASTFacto
 			symbol = functionDeclaration;
 		}
 		
-		ASTFunction function = new ASTFunction( symbol, nameEndOffset, parameters, returnType, exception, startOffset, startLine, nameOffset, nameLine, ownerTemplate, references, previouslyDeclared, hasFunctionTryBlock, isFriend, filename );        
-	    attachSymbolExtension(symbol, function, isFunctionDefinition); 
+		ASTFunction function = new ASTFunction( symbol, nameEndOffset, parameters, returnType, exception, startOffset, startLine, nameOffset, nameLine, ownerTemplate, references, previouslyDeclared, hasFunctionTryBlock, isFriend, filename );
+		
+	    attachSymbolExtension(symbol, function, isFunctionDefinition);
+	    
+		function.setHasFunctionBody(isFunctionDefinition);
+	    
 	    return function;
 	}
     
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/pst/ContainerSymbol.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/pst/ContainerSymbol.java
index ca996190617..56b0a5c3d37 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/pst/ContainerSymbol.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/pst/ContainerSymbol.java
@@ -400,6 +400,10 @@ public class ContainerSymbol extends BasicSymbol implements IContainerSymbol {
 					addedUsingToContained = true;
 				}
 				clone = (ISymbol) symbol.clone(); //7.3.3-9
+
+				clone.setForwardSymbol(symbol);
+				clone.setIsForwardDeclaration(true);
+				
 				addSymbol( clone );
 			} else {
 				throw new ParserSymbolTableException( ParserSymbolTableException.r_InvalidUsing );
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/pst/ParserSymbolTable.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/pst/ParserSymbolTable.java
index 03be0a3bb46..fbcf091abff 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/pst/ParserSymbolTable.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/pst/ParserSymbolTable.java
@@ -487,7 +487,7 @@ public class ParserSymbolTable {
 				
 				if( foundSymbol.isType( ITypeInfo.t_function ) ){
 					if( foundSymbol.isForwardDeclaration() && foundSymbol.getForwardSymbol() != null &&
-						foundSymbol.getForwardSymbol().getContainingSymbol() == foundSymbol.getContainingSymbol() )
+							!foundSymbol.isTemplateInstance() && foundSymbol.getForwardSymbol().getContainingSymbol() != null)
 					{
 						foundSymbol = foundSymbol.getForwardSymbol();
 					}
@@ -821,6 +821,12 @@ public class ParserSymbolTable {
 				return true;
 			newType = newSymbol.getType();
 		}	
+
+		// handle reverse-forward 'using' decls
+		if( newSymbol.isForwardDeclaration() ){
+			if( newSymbol.getForwardSymbol() == origSymbol )
+				return true;
+		}
 		
 		//handle forward decls
 		if( origSymbol.isForwardDeclaration() ){