1 files changed, 15 insertions, 0 deletions
diff --git a/csharp/ProtocolBuffers/DescriptorProtos/PartialClasses.cs b/csharp/ProtocolBuffers/DescriptorProtos/PartialClasses.cs
index 66501374..5f414fc2 100644
--- a/csharp/ProtocolBuffers/DescriptorProtos/PartialClasses.cs
+++ b/csharp/ProtocolBuffers/DescriptorProtos/PartialClasses.cs
@@ -18,6 +18,21 @@
 // autogenerated classes, so that they implement
 // IDescriptorProto
 namespace Google.ProtocolBuffers.DescriptorProtos {
+
+  // TODO(jonskeet): Find a better way of fixing this. It's needed in order to
+  // cope with unknown fields during initialization.
+  public partial class DescriptorProtoFile {
+    private static readonly bool initialized = false;
+
+    internal static bool Bootstrapping {
+      get { return !initialized; }
+    }
+
+    static DescriptorProtoFile() {
+      initialized = true;
+    }
+  }
+
   public partial class DescriptorProto : IDescriptorProto<MessageOptions> { }
   public partial class EnumDescriptorProto : IDescriptorProto<EnumOptions> { }
   public partial class EnumValueDescriptorProto : IDescriptorProto<EnumValueOptions> { }