From 0ba4f20ccab17ba98e270bd643f7c3465968d609 Mon Sep 17 00:00:00 2001
From: Daniel Grunwald <daniel@danielgrunwald.de>
Date: Mon, 6 Jan 2014 19:43:50 +0100
Subject: [PATCH] Don't show CS1729 error message if base type is unknown.

---
 .../CS1729TypeHasNoConstructorWithNArgumentsIssue.cs            | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp.Refactoring/CodeIssues/Uncategorized/CompilerErrors/CS1729TypeHasNoConstructorWithNArgumentsIssue.cs b/src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp.Refactoring/CodeIssues/Uncategorized/CompilerErrors/CS1729TypeHasNoConstructorWithNArgumentsIssue.cs
index 7569f79018..54d71273f1 100644
--- a/src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp.Refactoring/CodeIssues/Uncategorized/CompilerErrors/CS1729TypeHasNoConstructorWithNArgumentsIssue.cs
+++ b/src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp.Refactoring/CodeIssues/Uncategorized/CompilerErrors/CS1729TypeHasNoConstructorWithNArgumentsIssue.cs
@@ -117,6 +117,8 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 			
 			bool BaseTypeHasUsableParameterlessConstructor()
 			{
+				if (baseType.Kind == TypeKind.Unknown)
+					return true; // don't show CS1729 error message if base type is unknown 
 				var memberLookup = new MemberLookup(currentType.GetDefinition(), ctx.Compilation.MainAssembly);
 				OverloadResolution or = new OverloadResolution(ctx.Compilation, new ResolveResult[0]);
 				foreach (var ctor in baseType.GetConstructors()) {