Fixed a regression causing incorrect sizes of types derived from template instantiations.

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

src/Generator/Passes/CheckAbiParameters.cs

@@ -87,7 +87,8 @@ namespace CppSharp.Passes
         {
             if (@class.Fields.Count > 0 || @class.IsDynamic)
                 return true;
-            return @class.HasBaseClass && @class.Bases.Any(@base => @base.IsClass && HasFieldsOrVirtuals(@base.Class));
+            return @class.Bases.Any(@base => @base.IsClass && @base.Class != @class &&
+                HasFieldsOrVirtuals(@base.Class));
         }
     }
 }

tests/CSharp/CSharp.Tests.cs

@@ -437,4 +437,10 @@ public class CSharpTests : GeneratorTestFixture
             Assert.That(foo.A, Is.EqualTo(15));
         }
     }
+
+    [Test]
+    public unsafe void TestSizeOfDerivesFromTemplateInstantiation()
+    {
+        Assert.That(sizeof(DerivesFromTemplateInstantiation.Internal), Is.EqualTo(sizeof(int)));
+    }
 }

tests/CSharp/CSharp.cpp

@@ -789,3 +789,12 @@ void TestOutTypeInterfaces::funcTryInterfaceTypePtrOut(CS_OUT TestParamToInterfa
 void TestOutTypeInterfaces::funcTryInterfaceTypeOut(CS_OUT TestParamToInterfacePassBaseTwo classTry)
 {
 }
+
+template <typename T>
+TemplateWithDependentField<T>::TemplateWithDependentField()
+{
+}
+
+DerivesFromTemplateInstantiation::DerivesFromTemplateInstantiation()
+{
+}

tests/CSharp/CSharp.h

@@ -717,3 +717,17 @@ public:
     void funcTryInterfaceTypePtrOut(CS_OUT TestParamToInterfacePassBaseTwo* classTry);
     void funcTryInterfaceTypeOut(CS_OUT TestParamToInterfacePassBaseTwo classTry);
 };
+
+template <typename T>
+class TemplateWithDependentField
+{
+public:
+    TemplateWithDependentField();
+    T t;
+};
+
+class DerivesFromTemplateInstantiation : public TemplateWithDependentField<int>
+{
+public:
+    DerivesFromTemplateInstantiation();
+};

tests/Common/Common.h

@@ -843,3 +843,6 @@ namespace boost
     template <class T>         struct is_member_pointer_cv         { static const bool value = false; };
     template <class T, class U>struct is_member_pointer_cv<T U::*> { static const bool value = true; };
 }
+
+template <std::size_t N, std::size_t... I>
+struct build_index_impl : build_index_impl<N - 1, N - 1, I...> {};