Removed extensions for internal template specialisations.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/Generator/Passes/SpecializationMethodsWithDependentPointersPass.cs

@@ -57,7 +57,8 @@ namespace CppSharp.Passes
 
         public override bool VisitClassDecl(Class @class)
         {
-            if (!base.VisitClassDecl(@class) || !@class.IsDependent)
+            if (!base.VisitClassDecl(@class) || !@class.IsDependent ||
+                @class.Specializations.All(s => !s.IsGenerated))
                 return false;
 
             var methodsWithDependentPointers = @class.Methods.Where(

tests/CSharp/CSharpTemplates.h

@@ -309,6 +309,19 @@ public:
     ~DerivesFromExplicitSpecialization();
 };
 
+template <typename T>
+class InternalWithExtension
+{
+public:
+    const T* extension();
+};
+
+template <typename T>
+const T* InternalWithExtension<T>::extension()
+{
+    return 0;
+}
+
 template <typename T>
 class TemplateWithIndexer
 {
@@ -319,6 +332,7 @@ public:
 private:
     T t[1];
     HasDefaultTemplateArgument<char> h;
+    InternalWithExtension<char> i;
 };
 
 template <typename T>