Handle pointer to pointer param (#1343)

Generate valid C++/CLI for passed pointers to pointers

Co-authored-by: Build Agent <admin@sage.com>

src/Generator/Generators/CLI/CLIMarshal.cs

@@ -550,6 +550,12 @@ namespace CppSharp.Generators.CLI
                 return true;
             }
 
+            // Pass address of argument if the parameter is a pointer to the pointer itself.
+            if (pointee is PointerType && !Context.Parameter.Type.IsReference())
+            {
+                ArgumentPrefix.Write("&");
+            }
+
             return pointer.QualifiedPointee.Visit(this);
         }
 

tests/Common/Common.Tests.cs

@@ -1073,4 +1073,15 @@ This is a very long string. This is a very long string. This is a very long stri
             Assert.AreEqual(3, nonPrimitiveFixedArray.NonPrimitiveTypeArray[2].Foo);
         }
     }
+
+    [Test]
+    public void TestPointerToTypedefPointerTestMethod()
+    {
+        using (PointerToTypedefPointerTest lp = new PointerToTypedefPointerTest())
+        {
+            lp.Val = 50;
+            Common.PointerToTypedefPointerTestMethod(lp, 100);
+            Assert.AreEqual(100, lp.Val);
+        }
+    }
 }

tests/Common/Common.cpp

@@ -1192,3 +1192,8 @@ int NonPrimitiveType::GetFoo()
 TestFixedNonPrimitiveArrays::TestFixedNonPrimitiveArrays() 
 {
 }
+
+void DLL_API PointerToTypedefPointerTestMethod(LPPointerToTypedefPointerTest* lp, int valToSet)
+{
+    (*(*lp)).val = valToSet;
+}

tests/Common/Common.h

@@ -1596,3 +1596,11 @@ class TemplateClass : TemplateClassBase<A,B> {
     using Func = std::function<B(XType)>;
     explicit TemplateClass(Func function) {}
 };
+
+struct DLL_API PointerToTypedefPointerTest
+{
+    int val;
+};
+typedef PointerToTypedefPointerTest *LPPointerToTypedefPointerTest;
+
+void DLL_API PointerToTypedefPointerTestMethod(LPPointerToTypedefPointerTest* lp, int valToSet);