From f0f998ccf33af7e63c0e509d2f56a2ffdfc98a29 Mon Sep 17 00:00:00 2001
From: Bertrand Lorentz <bertrand.lorentz@gmail.com>
Date: Sun, 18 Nov 2012 11:10:18 +0100
Subject: [PATCH] generator: Fix compilation warning in some generated
 interface adapters

Don't generate a static field if it's not going to be used.

This fixes a compilation warning on the generated code for interfaces
that don't have virtual methods.
---
 generator/InterfaceGen.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/generator/InterfaceGen.cs b/generator/InterfaceGen.cs
index 8f979f7b2..4cec6aa7b 100644
--- a/generator/InterfaceGen.cs
+++ b/generator/InterfaceGen.cs
@@ -103,8 +103,10 @@ namespace GtkSharp.Generation {
 
 		void GenerateInitialize (StreamWriter sw)
 		{
-			sw.WriteLine ("\t\tstatic int class_offset = 2 * IntPtr.Size;"); // Class size of GTypeInterface struct
-			sw.WriteLine ();
+			if (interface_vms.Count > 0) {
+				sw.WriteLine ("\t\tstatic int class_offset = 2 * IntPtr.Size;"); // Class size of GTypeInterface struct
+				sw.WriteLine ();
+			}
 			sw.WriteLine ("\t\tstatic void Initialize (IntPtr ptr, IntPtr data)");
 			sw.WriteLine ("\t\t{");
 			if (interface_vms.Count > 0) {