From 212dcbfbd8600eae8eabb22ff811ffc6ee7aed04 Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Thu, 23 Jun 2011 22:06:52 +1000
Subject: [PATCH] Add sign_types specialisation for size_t/ssize_t

---
 types.hpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/types.hpp b/types.hpp
index 3077fcf5..5e5d8c40 100644
--- a/types.hpp
+++ b/types.hpp
@@ -70,6 +70,18 @@ template <> struct sign_types <unsigned int> {
 };
 
 
+template <> struct sign_types <ssize_t> {
+    typedef ssize_t with_sign;
+    typedef size_t  without_sign;
+};
+
+
+template <> struct sign_types <size_t> {
+    typedef ssize_t with_sign;
+    typedef size_t  without_sign;
+};
+
+
 /// Safely cast a numeric type to its signed comparison, aborting if the
 /// result is not representable.
 template <typename T>