From 1c27f907a54babfc214d23de15a826aa704e606b Mon Sep 17 00:00:00 2001
From: Nicolas Clauvelin <nclauvelin@sendyne.com>
Date: Fri, 23 Feb 2018 06:15:58 -0500
Subject: [PATCH] FIXES CONSTEXPR STATIC ISSUE WITH GCC 4.8.X

See https://github.com/sendyne/cppreg/issues/2 for a detailed explanation.

This closes #2.
---
 register/ShadowValue.h | 7 ++++++-
 single/cppreg-all.h    | 5 ++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/register/ShadowValue.h b/register/ShadowValue.h
index 91e9727..e4a82be 100644
--- a/register/ShadowValue.h
+++ b/register/ShadowValue.h
@@ -35,6 +35,8 @@ namespace cppreg {
      * @tparam Register Register type.
      *
      * This implementation is for register which do require shadow value.
+     *
+     * See 
      */
     template <typename Register>
     struct Shadow<Register, true> {
@@ -42,7 +44,10 @@ namespace cppreg {
         constexpr static const bool use_shadow = true;
     };
     template <typename Register>
-    typename Register::type Shadow<Register, true>::value = Register::reset;
+    typename Register::type Shadow<Register, true>::value =
+        Register::reset;
+    template <typename Register>
+    constexpr const bool Shadow<Register, true>::use_shadow;
 
 }
 
diff --git a/single/cppreg-all.h b/single/cppreg-all.h
index 4cf9b9b..445f0a5 100644
--- a/single/cppreg-all.h
+++ b/single/cppreg-all.h
@@ -133,7 +133,10 @@ namespace cppreg {
         constexpr static const bool use_shadow = true;
     };
     template <typename Register>
-    typename Register::type Shadow<Register, true>::value = Register::reset;
+    typename Register::type Shadow<Register, true>::value =
+        Register::reset;
+    template <typename Register>
+    constexpr const bool Shadow<Register, true>::use_shadow;
 }
 #endif