From 1d7fe0e770db50dd8e06821443d7246506398ac9 Mon Sep 17 00:00:00 2001
From: drivehappy <drivehappy@gmail.com>
Date: Tue, 21 Apr 2015 14:37:41 -0700
Subject: [PATCH] Removed unused parameters.

---
 include/boost/optional/optional.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/optional/optional.hpp b/include/boost/optional/optional.hpp
index afcb807..64ddac8 100644
--- a/include/boost/optional/optional.hpp
+++ b/include/boost/optional/optional.hpp
@@ -1251,7 +1251,7 @@ get_pointer ( optional<T>& opt )
 // The following declaration prevents a bug where operator safe-bool is used upon streaming optional object if you forget the IO header.
 template<class CharType, class CharTrait>
 std::basic_ostream<CharType, CharTrait>&
-operator<<(std::basic_ostream<CharType, CharTrait>& out, optional_detail::optional_tag const& v)
+operator<<(std::basic_ostream<CharType, CharTrait>&, optional_detail::optional_tag const&)
 {
   BOOST_STATIC_ASSERT_MSG(sizeof(CharType) == 0, "If you want to output boost::optional, include header <boost/optional/optional_io.hpp>"); 
 }