From a734166dc25ef901db5ba1c98382734278f9cff2 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Sat, 2 Jul 2011 20:26:19 +0000
Subject: [PATCH] Random: disable incorrect use of constexpr for now.

Authorized by Beman.


[SVN r72861]
---
 include/boost/random/detail/integer_log2.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/boost/random/detail/integer_log2.hpp b/include/boost/random/detail/integer_log2.hpp
index 0ad0c2f..f1d7ae0 100644
--- a/include/boost/random/detail/integer_log2.hpp
+++ b/include/boost/random/detail/integer_log2.hpp
@@ -22,7 +22,9 @@ namespace boost {
 namespace random {
 namespace detail {
 
-#if !defined(BOOST_NO_CONSTEXPR)
+// Daniel James: Disabled use of constexpr because integer_log2_impl is not a
+// valid constexpr.
+#if 0 && !defined(BOOST_NO_CONSTEXPR)
 #define BOOST_RANDOM_DETAIL_CONSTEXPR constexpr
 #elif defined(BOOST_MSVC)
 #define BOOST_RANDOM_DETAIL_CONSTEXPR __forceinline