Merge pull request #44 from ddobrev/duplicates_ignore_hidden_args

Duplicates ignore hidden args

src/Generator/Passes/CheckDuplicatedNamesPass.cs

@@ -39,7 +39,8 @@ namespace CppSharp.Passes
 
         private bool UpdateName(Method method)
         {
-            var @params = method.Parameters.Select(p => p.QualifiedType.ToString());
+            var @params = method.Parameters.Where(p => p.Kind != ParameterKind.HiddenStructureReturn)
+                                .Select(p => p.QualifiedType.ToString());
             var signature = string.Format("{0}({1})", Name,string.Join( ", ", @params));
 
             if (Count == 0)

src/Generator/Passes/FindSymbolsPass.cs

@@ -6,15 +6,12 @@ namespace CppSharp.Passes
     {
         public override bool VisitDeclaration(Declaration decl)
         {
-            var mangledDecl = decl as IMangledDecl;
-            if (mangledDecl == null)
-                return false;
-
             var options = Driver.Options;
             if (!options.CheckSymbols || options.IsCLIGenerator)
                 return false;
 
-            if (!VisitMangledDeclaration(mangledDecl))
+            var mangledDecl = decl as IMangledDecl;
+            if (mangledDecl != null && !VisitMangledDeclaration(mangledDecl))
             {
                 decl.ExplicityIgnored = true;
                 return false;