From 1480e33dc6196caf726d6c4ba4a5b3f97b8a02ac Mon Sep 17 00:00:00 2001
From: jzmaddock <john@johnmaddock.co.uk>
Date: Thu, 9 Nov 2017 18:13:16 +0000
Subject: [PATCH] Regex: Fix recursive algorithm builds.

---
 include/boost/regex/v4/perl_matcher.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/boost/regex/v4/perl_matcher.hpp b/include/boost/regex/v4/perl_matcher.hpp
index 1182b775..a696e5d9 100644
--- a/include/boost/regex/v4/perl_matcher.hpp
+++ b/include/boost/regex/v4/perl_matcher.hpp
@@ -378,7 +378,10 @@ public:
       BidiIterator l_base)
       :  m_result(what), base(first), last(end), 
          position(first), backstop(l_base), re(e), traits_inst(e.get_traits()), 
-         m_independent(false), next_count(&rep_obj), rep_obj(&next_count), m_recursions(0)
+         m_independent(false), next_count(&rep_obj), rep_obj(&next_count)
+#ifdef BOOST_REGEX_NON_RECURSIVE
+      , m_recursions(0)
+#endif
    {
       construct_init(e, f);
    }