diff --git a/index.htm b/index.htm
index 4256baa..e07fc4a 100644
--- a/index.htm
+++ b/index.htm
@@ -35,7 +35,12 @@ first. </p>
 <a href="#headers">Type traits headers</a>
 <a href="#example">Example Code</a></pre>
 
-<p>&nbsp;</p>
+<p>All of the integral expressions in this library are <a
+href="../../more/integral_constant_guidelines.htm"><em>integral
+constant expressions</em></a>, these can sometimes cause compiler
+problems in use, so there is a related set of <a
+href="../../more/integral_constant_guidelines.htm">coding
+guidelines</a> to help you write portable code using this library.</p>
 
 <h2><a name="primary"></a>Primary Type Categorisation</h2>
 
diff --git a/tests/is_function_test.cpp b/tests/is_function_test.cpp
index 8e4a40c..3431602 100644
--- a/tests/is_function_test.cpp
+++ b/tests/is_function_test.cpp
@@ -8,7 +8,7 @@
 #include "boost/type_traits/type_traits_test.hpp"
 
 template <class T>
-#ifndef __BORLANDC__
+#if !defined(__BORLANDC__) && !defined(__sgi) && !defined(__DECCXX) 
 void is_function_test(T& foo)
 #else
 void is_function_test(const T& foo)