Added suffixes to generated variables to avoid conflicts.

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

src/Generator/Generators/CSharp/CSharpMarshal.cs

@@ -59,6 +59,8 @@ namespace CppSharp.Generators.CSharp
             Context.MarshalToManaged = this;
         }
 
+        public int VarSuffix { get; set; }
+
         public static string QualifiedIdentifier(Declaration decl)
         {
             var names = new List<string> { decl.Name };
@@ -207,6 +209,8 @@ namespace CppSharp.Generators.CSharp
             if (ctx.Kind == CSharpMarshalKind.NativeField)
             {
                 string copy = Generator.GeneratedIdentifier("copy");
+                if (VarSuffix > 0)
+                    copy += VarSuffix;
                 Context.SupportBefore.WriteLine(
                     "var {0} = new global::System.IntPtr(&{1});", copy, instance);
                 instance = copy;
@@ -215,6 +219,8 @@ namespace CppSharp.Generators.CSharp
             if (@class.IsRefType)
             {
                 var instanceName = Generator.GeneratedIdentifier("instance");
+                if (VarSuffix > 0)
+                    instanceName += VarSuffix;
 
                 // Allocate memory for a new native object and call the ctor.
                 Context.SupportBefore.WriteLine("var {0} = Marshal.AllocHGlobal({1});",

src/Generator/Generators/CSharp/CSharpTextTemplate.cs

@@ -503,8 +503,9 @@ namespace CppSharp.Generators.CSharp
                 GenerateStructMarshalingFields(@base.Class);
             }
 
-            foreach (var field in @class.Fields)
+            for (int i = 0; i < @class.Fields.Count; i++)
             {
+                var field = @class.Fields[i];
                 if (ASTUtils.CheckIgnoreField(field)) continue;
 
                 var nativeField = string.Format("{0}->{1}",
@@ -519,6 +520,7 @@ namespace CppSharp.Generators.CSharp
                 };
 
                 var marshal = new CSharpMarshalNativeToManagedPrinter(ctx);
+                marshal.VarSuffix = i;
                 field.Visit(marshal);
 
                 if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))