Fixed a bug causing a class layout to have the class as its own base.

Fixes https://github.com/mono/CppSharp/issues/702.

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

src/CppParser/Parser.cpp

@@ -102,12 +102,15 @@ void Parser::ReadClassLayout(Class* Class, const clang::RecordDecl* RD,
     auto CXXRD = dyn_cast<CXXRecordDecl>(RD);
 
     auto Parent = static_cast<AST::Class*>(
-        WalkDeclaration(RD, /*IgnoreSystemDecls =*/false));
+        WalkDeclaration(RD, /*CanBeDefinition =*/false));
 
-    LayoutBase LayoutBase;
-    LayoutBase.Offset = Offset.getQuantity();
-    LayoutBase.Class = Parent;
-    Class->Layout->Bases.push_back(LayoutBase);
+    if (Class != Parent)
+    {
+        LayoutBase LayoutBase;
+        LayoutBase.Offset = Offset.getQuantity();
+        LayoutBase.Class = Parent;
+        Class->Layout->Bases.push_back(LayoutBase);
+    }
 
     // Dump bases.
     if (CXXRD) {

src/Generator.Tests/AST/TestAST.cs

@@ -417,5 +417,12 @@ namespace CppSharp.Generator.Tests.AST
             Assert.That(template.Specializations.Last().Visit(cppTypePrinter),
                 Is.EqualTo("TestSpecializationArguments<const TestASTEnumItemByName>"));
         }
-    }
+
+        [Test]
+        public void TestLayoutBase()
+        {
+            var @class = AstContext.FindCompleteClass("TestComments");
+            Assert.That(@class.Layout.Bases.Count, Is.EqualTo(0));
+        }
+	}
 }