From 804b7fcb2f12419d0900a20970c35ef3a1abd60d Mon Sep 17 00:00:00 2001
From: "Philipp A. Hartmann" <pah@qo.cx>
Date: Sat, 30 Aug 2014 16:39:15 +0200
Subject: [PATCH] GenericValue: add static assert to catch broken SFINAE

Before applying the simplifications in ed282b814, the SFINAE check for the
GenericValue(bool) constructor has been broken in MSVC 2005. Add a static
assert as a safe-guard against future reappearance of this problem.
---
 include/rapidjson/document.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/rapidjson/document.h b/include/rapidjson/document.h
index 83e984a..cd0ca22 100644
--- a/include/rapidjson/document.h
+++ b/include/rapidjson/document.h
@@ -458,7 +458,10 @@ public:
 #else
     explicit GenericValue(bool b)
 #endif
-        : data_(), flags_(b ? kTrueFlag : kFalseFlag) {}
+        : data_(), flags_(b ? kTrueFlag : kFalseFlag) {
+            // safe-guard against failing SFINAE
+            RAPIDJSON_STATIC_ASSERT((internal::IsSame<bool,T>::Value));
+    }
 
     //! Constructor for int value.
     explicit GenericValue(int i) : data_(), flags_(kNumberIntFlag) {