From 5e3b4a14143d3cddfa0c2af65041c750c6ffec30 Mon Sep 17 00:00:00 2001
From: de4dot <de4dot@gmail.com>
Date: Sat, 14 Jan 2012 12:19:17 +0100
Subject: [PATCH] Add some checks

---
 de4dot.code/deobfuscators/ValueInlinerBase.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/de4dot.code/deobfuscators/ValueInlinerBase.cs b/de4dot.code/deobfuscators/ValueInlinerBase.cs
index d9f31d34..e9494c5d 100644
--- a/de4dot.code/deobfuscators/ValueInlinerBase.cs
+++ b/de4dot.code/deobfuscators/ValueInlinerBase.cs
@@ -17,6 +17,7 @@
     along with de4dot.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+using System;
 using System.Collections.Generic;
 using Mono.Cecil;
 using Mono.Cecil.Cil;
@@ -43,6 +44,10 @@ namespace de4dot.code.deobfuscators {
 		}
 
 		public void add(MethodDefinition method, Func<MethodDefinition, object[], TValue> handler) {
+			if (method == null)
+				return;
+			if (decrypterMethods.find(method) != null)
+				throw new ApplicationException(string.Format("Handler for method {0:X8} has already been added", method.MetadataToken.ToInt32()));
 			if (method != null)
 				decrypterMethods.add(method, handler);
 		}