From 4ad6f1bd4b64b9f88a6c67cf8702fc5b369a1d1f Mon Sep 17 00:00:00 2001
From: Antony Polukhin <antoshkka@gmail.com>
Date: Sat, 22 Dec 2012 18:42:04 +0000
Subject: [PATCH] FIx bug in conversion of some std::array implementations
 (refs #7799)

[SVN r82172]
---
 include/boost/lexical_cast.hpp | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/include/boost/lexical_cast.hpp b/include/boost/lexical_cast.hpp
index 1fd0b95..62dca33 100644
--- a/include/boost/lexical_cast.hpp
+++ b/include/boost/lexical_cast.hpp
@@ -1771,7 +1771,10 @@ namespace boost {
 #ifndef BOOST_NO_CXX11_HDR_ARRAY
             template <std::size_t N>
             bool operator<<(std::array<CharT, N> const& input) BOOST_NOEXCEPT
-            { return shl_char_array_limited(input.begin(), N); }
+            { 
+                if (input.size()) return shl_char_array_limited(&input[0], N);
+                else return true; 
+            }
 
             template <std::size_t N>
             bool operator<<(std::array<unsigned char, N> const& input) BOOST_NOEXCEPT
@@ -1783,7 +1786,10 @@ namespace boost {
 
             template <std::size_t N>
             bool operator<<(std::array<const CharT, N> const& input) BOOST_NOEXCEPT
-            { return shl_char_array_limited(input.begin(), N); }
+            { 
+                if (input.size()) return shl_char_array_limited(&input[0], N);
+                else return true; 
+            }
 
             template <std::size_t N>
             bool operator<<(std::array<const unsigned char, N> const& input) BOOST_NOEXCEPT
@@ -1984,8 +1990,8 @@ namespace boost {
                     return false;
                 }
 
-                memcpy(output.begin(), start, size * sizeof(CharT));
-                *(output.begin() + size) = Traits::to_char_type(0);
+                memcpy(&output[0], start, size * sizeof(CharT));
+                output[size] = Traits::to_char_type(0);
                 return true;
             }