From a29fc42602741605fdfc47c8ff8f560b47f65040 Mon Sep 17 00:00:00 2001
From: triton <ripzonetriton@gmail.com>
Date: Wed, 30 Jan 2013 16:32:25 +0000
Subject: [PATCH] Throw an exception when we cannot marshal an argument.

---
 src/Generator/Generators/CLI/CLISourcesTemplate.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Generator/Generators/CLI/CLISourcesTemplate.cs b/src/Generator/Generators/CLI/CLISourcesTemplate.cs
index 9ed16126..73442dbe 100644
--- a/src/Generator/Generators/CLI/CLISourcesTemplate.cs
+++ b/src/Generator/Generators/CLI/CLISourcesTemplate.cs
@@ -297,7 +297,7 @@ namespace Cxxi.Generators.CLI
                     param.Visit(marshal);
 
                     if (string.IsNullOrEmpty(marshal.Return))
-                        return null;
+                        throw new Exception("Cannot marshal argument of function");
 
                     if (!string.IsNullOrWhiteSpace(marshal.SupportBefore))
                         WriteLine(marshal.SupportBefore);