Fixed the generated C# when a base class is an external specialisation.

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

src/Generator/Passes/TrimSpecializationsPass.cs

@@ -190,7 +190,11 @@ namespace CppSharp.Passes
             {
                 var specialization = @base.Class as ClassTemplateSpecialization;
                 if (specialization != null)
-                    AddSpecialization(specialization);
+                {
+                    if (!ASTUtils.CheckTypeForSpecialization(@base.Type, @class,
+                           AddSpecialization, Context.TypeMaps))
+                        CheckForInternalSpecialization(@class, @base.Type);
+                }
                 CheckBasesForSpecialization(@base.Class);
             }
         }

tests/NamespacesBase/NamespacesBase.h

@@ -59,6 +59,13 @@ class TemplateClass
     T t;
 };
 
+template <typename T>
+class TemplateWithIndependentFields
+{
+public:
+    void useDependentPointer(const T* t);
+};
+
 class DLL_API HasVirtualInCore
 {
 public:

tests/NamespacesDerived/NamespacesDerived.cpp

@@ -62,6 +62,14 @@ Abstract* Derived2::getAbstract()
     return 0;
 }
 
+DerivedFromExternalSpecialization::DerivedFromExternalSpecialization()
+{
+}
+
+DerivedFromExternalSpecialization::~DerivedFromExternalSpecialization()
+{
+}
+
 HasVirtualInDependency::HasVirtualInDependency()
 {
 }

tests/NamespacesDerived/NamespacesDerived.cs

@@ -16,6 +16,7 @@ namespace CppSharp.Tests
         {
             base.Setup(driver);
             driver.Options.GenerateDefaultValuesForArguments = true;
+            driver.Options.GenerateClassTemplates = true;
 
             driver.Options.Modules[1].IncludeDirs.Add(GetTestsDirectory("NamespacesDerived"));
             var @base = "NamespacesBase";

tests/NamespacesDerived/NamespacesDerived.h

@@ -71,6 +71,13 @@ public:
     int callManagedOverride();
 };
 
+class DLL_API DerivedFromExternalSpecialization : public TemplateWithIndependentFields<Derived>
+{
+public:
+    DerivedFromExternalSpecialization();
+    ~DerivedFromExternalSpecialization();
+};
+
 class DLL_API DerivedFromSecondaryBaseInDependency : public Derived, public SecondaryBase
 {
 public: