From 1de4cd12f5f78d933ecb9c64a26568776cbc38e6 Mon Sep 17 00:00:00 2001
From: John Maddock <john@johnmaddock.co.uk>
Date: Mon, 31 Oct 2005 11:09:13 +0000
Subject: [PATCH] Fix for trailing '-' in range expressions.

[SVN r31510]
---
 include/boost/regex/v4/basic_regex_parser.hpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/boost/regex/v4/basic_regex_parser.hpp b/include/boost/regex/v4/basic_regex_parser.hpp
index 6fc25dc2..b5cd2794 100644
--- a/include/boost/regex/v4/basic_regex_parser.hpp
+++ b/include/boost/regex/v4/basic_regex_parser.hpp
@@ -1220,6 +1220,17 @@ void basic_regex_parser<charT, traits>::parse_set_literal(basic_char_set<charT,
          char_set.add_range(start_range, end_range);
          if(this->m_traits.syntax_type(*m_position) == regex_constants::syntax_dash)
          {
+			   if(m_end == ++m_position)
+			   {
+				   fail(regex_constants::error_brack, m_position - m_base);
+				   return;
+			   }
+			   if(this->m_traits.syntax_type(*m_position) == regex_constants::syntax_close_set)
+			   {
+               // trailing - :
+               --m_position;
+               return;
+			   }
             fail(regex_constants::error_range, m_position - m_base);
             return;
          }