Fix: "A reference value was found to be bad during dereferencing."

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@3183 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Values/Value.Helpers.cs

@@ -7,7 +7,7 @@
 
 using System;
 using System.Collections.Generic;
-
+using System.Runtime.InteropServices;
 using Debugger.Wrappers.CorDebug;
 
 namespace Debugger
@@ -18,7 +18,16 @@ namespace Debugger
 		{
 			// Method arguments can be passed 'by ref'
 			if (corValue.Type == (uint)CorElementType.BYREF) {
-				corValue = corValue.CastTo<ICorDebugReferenceValue>().Dereference();
+				try {
+					corValue = corValue.CastTo<ICorDebugReferenceValue>().Dereference();
+				} catch (COMException e) {
+					// This might be an issue in optimized code.  (try stepping through a Console.Write(string))
+					// A reference value was found to be bad during dereferencing. (Exception from HRESULT: 0x80131305)
+					if ((uint)e.ErrorCode == 0x80131305) {
+						throw new GetValueException("A reference value was found to be bad during dereferencing");
+					}
+					throw;
+				}
 			}
 			
 			// Pointers may be used in 'unsafe' code - CorElementType.PTR